Acaricide and application thereof

Abstract

An acaricide includes a surfactant and a penetrant. The acaricide has good, quick-acting effects, long effective period, safe and environment friendly, good stability, and a wide range of applications. The acaricide is not only capable of being used for exterminating agricultural and forest mites, but is also capable of being used for exterminating medical and animal husbandry mites. The acaricide has few to none drug residues and has good stability in acaricidal effect. Moreover, the acaricide is convenient to use, and may be used either alone or added directly into other insecticides.

Claims

1. An acaricide, consisting of an ethoxy-modified trisiloxane and sodium dioctyl sulfosuccinate.

2. The acaricide according to claim 1, wherein, a mass ratio of the ethoxy-modified trisiloxane to the sodium dioctyl sulfosuccinate ranges from (1:2) to (1:0.5).

3. The acaricide according to claim 1, wherein, a mass ratio of the ethoxy-modified trisiloxane to the sodium dioctyl sulfosuccinate ranges from (1:1.2) to (1:0.8).

4. A method for applying the acaricide according to claim 1, comprising: applying the acaricide for exterminating mites.

5. The method according to claim 4, wherein, a mass ratio of the ethoxy-modified trisiloxane to the sodium dioctyl sulfosuccinate is 1:0.5-2.

6. The method according to claim 4, wherein, a mass ratio of the ethoxy-modified trisiloxane to the sodium dioctyl sulfosuccinate ranges from (1:1.2) to (1:0.8).

7. The method according to claim 4, wherein, a mass ratio of the ethoxy-modified trisiloxane to the sodium dioctyl sulfosuccinate is 1:0.5-2.

Description

DETAILED DESCRIPTION OF THE EMBODIMENTS

(1) The embodiments described here, are to better illustrate the contents of the present invention. However, the contents of the present invention are not limited to the embodiments. Therefore, any non-essential improvements and modifications made to the embodiments by those skilled in the art based on the foregoing contents of the present disclosure, still fall within the protective scope of the present invention.

(2) Hereinafter, the ethoxy-modified trisiloxanes were Agricultural Silicone 248 purchased from Zhejiang Xinnong Chemical Co., Ltd. (Active ingredient content>99%). Sodium dioctyl sulfosuccinate was purchased from Sunda Chemical (Nantong) Co., Ltd., with the active ingredient content of 50 wt % (containing 50 wt % water) or 75 wt % (containing 17 wt % water and 8 wt % ethanol). 1.8% avermectin emul-sifiable concentrate (EC) was purchased from Shandong Zouping Pesticide Co., Ltd. 20% pyridaben wettable powder (WP) was purchased from Jiangsu Kesheng Group Co., Ltd.; 22.4% SC spirotetramat was purchased from Bayer CropScience (China) Co., Ltd.; 110 g/L etoxazole suspension concentrate (SC) was purchased from Sumitomo Chemical Shanghai Co., Ltd. Fenpropathrin+hexythiazox (fenpropathrin 5.0%, and hexythiazox 2.5%) was purchased from Qingdao Kaiyuanxiang Chemical Co., Ltd. Abamectin+fenpropathrin (abamectin 0.1%, and fenpropathrin 1.7%) was purchased from Jinan Saipu Industrial Co., Ltd.; amitraz (200 g/L) was purchased from Qingdao Haina Biotechnology Co., Ltd. 72% Cymoxanil+mancozeb was purchased from Shanghai DuPont Agrochemical Co., Ltd.

Embodiment 1

(3) Acaricide: the sodium dioctyl sulfosuccinate with an active ingredient content of 50 wt % was vacuum-dried at a temperature of 140° C. (vacuum degree 10 kPa) for 4 hours, and then cooled to room temperature. Subsequently, the ethoxy-modified trisiloxane was mixed with the solid obtained after cooling in a mass ratio of 1:0.5, and then stirring was performed until the solid is dissolved completely to obtain the acaricide.

Embodiment 2

(4) Acaricide: the sodium dioctyl sulfosuccinate with an active ingredient content of 75 wt % was vacuum-dried at a temperature of 140° C. (vacuum degree 4 kPa) for 2 hours, and then cooled to room temperature. Subsequently, the ethoxy-modified trisiloxane was mixed with the solid obtained after cooling in a mass ratio of 1:0.7, and then stirring was performed at 50° C. until the solid is dissolved completely to obtain the acaricide.

Embodiment 3

(5) Acaricide: the sodium dioctyl sulfosuccinate with an active ingredient content of 75 wt % was vacuum-dried at a temperature of 140° C. (vacuum degree 6 kPa) for 3 hours, and then cooled to room temperature. Subsequently, the ethoxy-modified trisiloxane was mixed with the solid obtained after cooling in a mass ratio of 1:0.9, and then stirring was performed at 60° C. until the solid is dissolved completely to obtain the acaricide.

Embodiment 4

(6) Acaricide: the ethoxy-modified trisiloxane was mixed with the sodium dioctyl sulfosuccinate having an active ingredient content of 75 wt % according to a mass ratio of 1:2, and was then stirred and mixed evenly to obtain the acaricide.

Embodiment 5

(7) Acaricide: the ethoxy-modified trisiloxane was mixed with the sodium dioctyl sulfosuccinate having an active ingredient content of 75 wt % according to a mass ratio of 1:2.67, and then stirred and mixed evenly to obtain the acaricide.

(8) Acaricidal Effect Performance Test

(9) According to the Pesticide-Guidelines for the field efficacy trials, two citrus trees at flowering stage were randomly selected from each treatment group in the same orchard. The measurement was repeated 4 times for each treatment group, and the average value of mite counts for the 4 measurements in the field was used as the final result. The acaricides prepared in embodiments 1-5 were diluted 1000 folds, 1.8% abamectin EC was diluted 2000 folds, 20% pyridaben WP was diluted 2000 folds, 22.4% spirotetramat SC was diluted 4000 folds, 110 g/L etoxazole SC was diluted 5000 folds, and water was used as a control. Before spraying and 3, 10, 15, 20, 30 days after spraying, 25 leaves were randomly selected from each orchard, and the number of live mites in each treatment group was counted. SPSS 19.0 was used for variance analysis and Fisher's least significant difference (LSD) multiple comparison analysis of the data. The results are shown in Table 1.

(10) TABLE-US-00001 TABLE 1 Control efficacy on citrus mites Cardinal 3.sup.rd day 10.sup.th day 15.sup.th day 20.sup.th day 30.sup.th day number Number Control Number Control Number Control Number Control Number Control before of efficacy/ of efficacy/ of efficacy/ of efficacy/ of efficacy/ Treatment administration mites % mites % mites % mites % mites % Acaricide 148 0 100aA   0 100aA   0.75 99.49aA 4.75  96.79abA 8.75 .sup. 94.09bAB 1000× in Embodi- ment 1 Acaricide 176 0.5 99.72aA 0 100aA   0 100aA   3.25 98.15aA 6.5 96.31aA 1000× in Embodi- ment 2 Acaricide 135 0 100aA   0 100aA   0 100aA   8.5 93.70bB 5.5  95.93abA 1000× in Embodi- ment 3 Acaricide 142 0 100aA   0.5 99.67aA 0.25 99.8aA  10.75  92.27bcB 7  .sup. 93.97bcAB 1000× in Embodi- ment 4 Acaricide 155 0 100aA   0 100aA   0.5 99.68aA 4.25 97.26aA 3.75 97.58aA 1000× in Embodi- ment 5 1.8% EC 160.25 0.5 99.83aA 3  99.02abA 5.75 97.18bA 15.5 91.03cB 10.75 92.2cB  abamectin 2000× 20% WP 63 3 95.26bB 2.75 95.27cB 3 94.61cB 3.5 92.4bcB 4.75 90.21dB pyridaben 2000× 22.4% SC 93 9.5 92.45cB 2.25 .sup. 97.87bAB 1.5  98.55abA 6.5 93.08bB 4.25 .sup. 94.37bAB spirotetramat 4000× 110 g/LSC 120 7.75 94.89bB 1.25 99.71aA 0 100aA   2 98.72aA 2.75  95.49abA etoxazole 5000× Water 237.75 212.5 10.62dC 186.5 21.56dC 196.75 17.24dC 154.5 35.02dC 168.5 29.13eC control Note: Different lowercase letters in the same column indicate a significant difference (P < 0.05), and different uppercase letters in the same column indicate a highly significant difference (P < 0.01); 1000×, 2000×, 4000×, and 5000× represent 1000-fold dilution, 2000-fold dilution, 4000-fold dilution, and 5000-fold dilution, respectively.

(11) Table 1 shows, 3 days after spraying, the control efficacy of the acaricides prepared in embodiments 1-5 on citrus red mites (Panonychus citri Mcgregor) was 100%, and the control efficacy did not significantly decrease 30 days after spraying. Thus, the results indicate that the acaricide of the present invention has excellent quick-acaricidal effect, excellent effect stability and a long effective period.

(12) The control efficacies of the acaricides prepared in embodiment 3 after being diluted by 1000 folds and 1500 folds on citrus red mites were respectively tested. The control efficacy of the fenpropathrin+hexythiazox (fenpropathrin 5.0%, and hexythiazox 2.5%) diluted 1000 folds on citrus red mites was tested. The control efficacies of the insecticide consisting of a 1000-fold dilution of fenpropathrin+hexythiazox (fenpropathrin 5.0%, and hexythiazox 2.5%) and a 3000-fold dilution of the acaricide prepared in embodiment 3, the insecticide consisting of a 1000-fold dilution of fenpropathrin+hexythiazox (fenpropathrin 5.0%, and hexythiazox 2.5%) and a 4000-fold dilution of the acaricide prepared in embodiment 3, and the insecticide consisting of a 1000-fold dilution of fenpropathrin+hexythiazox (fenpropathrin 5.0%, and hexythiazox 2.5%) and a 5000-fold dilution of the acaricide prepared in embodiment 3 on citrus red mites were tested.

(13) The specific test method is as follows. Two sugar orange trees at fruit maturity stage were randomly selected from each treatment group in the same orchard. The measurement was repeated 4 times for each treatment group, and the average value of the number of citrus red mites of the 4 groups measured 4 was used as the final result; and water was used as a control. Before spraying, and 3 days and 10 days after spraying, 25 leaves of the sugar orange trees were randomly selected from different parts of the sugar orange trees in each orchard, and the number of live citrus red mites in each treatment group was counted. SPSS 19.0 was used for variance analysis and LSD multiple comparison analysis of the data. The results are shown in Table 2.

(14) TABLE-US-00002 TABLE 2 Control efficacy on citrus red mites Cardinal number 3.sup.rd day 10.sup.th day before Number Control Number Control Treatment administration of mites efficacy/% of mites efficacy/% Acaricide 1000× in Embodiment 3 89.75 0 100aA 0 100aA Acaricide 1500× in Embodiment 3 61.75 0 100aA 0.5  99.3aA Fenpropathrin + hexythiazox 1000× 83.75 24  69.4dD 34.75  69.8eD Fenpropathrin + hexythiazox 1000× + 73 0 100aA 2.75  97.1bA acaricide 3000× in Embodiment 3 Fenpropathrin + hexythiazox 1000× + 142.75 10.5  90.6bB 16.5  89.2 cB acaricide 4000× in Embodiment 3 Fenpropathrin + hexythiazox 1000× + 61.75 10  83.5cC 19.75  77.0 dC acaricide 5000× in Embodiment 3 Water control 83.5 81.5  2.40eE 118.25  0fE Note: Different lowercase letters in the same column indicate a significant difference (P < 0.05), and different uppercase letters in the same column indicate a highly significant difference (P < 0.01); 1000×, 1500×, 3000×, 4000×, and 5000× represent 1000-fold dilution, 1500-fold dilution, 3000-fold dilution, 4000-fold dilution, and 5000-fold dilution, respectively.

(15) Table 2 shows, the control efficacies of the 1000-fold diluted solution and the 1500-fold diluted solution of the acaricide prepared in embodiment 3 on citrus red mites, were significantly better than that of the 1000-fold diluted solution of the fenpropathrin+hexythiazox. The control efficacies of the insecticide consisting of a 1000-fold dilution of fenpropathrin+hexythiazox (fenpropathrin 5.0%, hexythiazox 2.5%) and a 3000-fold dilution of the acaricide prepared in embodiment 3, the insecticide consisting of a 1000-fold dilution of fenpropathrin+hexythiazox (fenpropathrin 5.0%, hexythiazox 2.5%) and a 4000-fold dilution of the acaricide prepared in embodiment 3 and the insecticide consisting of a 1000-fold dilution of fenpropathrin+hexythiazox (fenpropathrin 5.0%, hexythiazox 2.5%) and a 5000-fold dilution of the acaricide prepared in embodiment 3 on citrus red mites were significantly better than that of the 1000-fold diluted solution of the fenpropathrin+hexythiazox. Thus, the results indicate that the acaricide of the present invention has an excellent acaricidal effect on citrus red mites, and has a significant synergistic effect on the 1000-fold diluted solution of the fenpropathrin+hexythiazox.

(16) The control efficacies of the acaricides prepared in embodiment 3 after being diluted 1000 folds, 1500 folds, 2000 folds, and 3000 folds on citrus red mites were respectively tested. The control efficacy of the abamectin+fenpropathrin diluted 1000 folds on citrus red mites was tested. The control efficacy of the amitraz diluted 1000 folds on citrus red mites was tested. The control efficacy of the insecticide consisting of a 1000-fold dilution of abamectin+fenpropathrin and a 3000-fold dilution of the acaricide prepared in embodiment 3 on citrus red mites was tested. The control efficacy of the insecticide consisting of a 1000-fold dilution of amitraz and a 3000-fold dilution of the acaricide prepared in embodiment 3 on citrus red mites was tested. The specific test method is as follows. Two red pomelo trees at young fruit stage were randomly selected from each treatment group in the same orchard. The measurement was repeated 4 times for each treatment group, and the average value was used as the final result, with water as a control. Before spraying and 1, 3, and 14 days after spraying, 50 leaves were randomly selected from different parts of the red pomelo trees, and the number of live citrus red mites in each treatment group was counted. SPSS 19.0 was used for variance analysis and LSD multiple comparison analysis of the data. The results are shown in Table 3.

(17) TABLE-US-00003 TABLE 3 Control efficacy on citrus red mites 1.sup.st day 3.sup.rd day 14.sup.th day Cardinal number Number Control Number Control Number Control before of efficacy/ of efficacy/ of efficacy/ Treatment administration mites % mites % mites % Acaricide 1000× 2344.25 0 100aA   0 100aA 0 100aA  in Embodiment 3 Acaricide 1500× 2403.75 0 100aA   0 100aA 5  .sup. 99.8aA in Embodiment 3 Acaricide 2000× 2394 5.25 99.78aA 6.75 99.72aA 52.75  .sup. 97.8bA in Embodiment 3 Acaricide 3000× 2305.5 16.75 99.27aA 15.25 99.34aA 148.25   .sup.  93.57cB in Embodiment 3 Abamectin + 2529.5 261.75 89.65bB 333 86.83bB 1144.75   .sup. 54.74dC fenpropathrin 1000× Amitraz 1000× 2245.5 512.25 77.19cC 821.5 63.42cC 2335.5  0eD Abamectin + 2383.75 0 100aA   20.5 99.25aA 83.25 97.5 fenpropathrin 1000× + acaricide 3000× in Embodiment 3 Amitraz 1000× + 2416.5 0 100aA   0 100aA   75.25 97.8bA acaricide 3000× in Embodiment 3 Water control 2327 2490.5 0dD  2495.5 0dD  3323.25  0eD Note: Different lowercase letters in the same column indicate a significant difference (P < 0.05), and different uppercase letters in the same column indicate a highly significant difference (P < 0.01); 1000×, 1500×. 2000×, and 3000× represent 1000-fold dilution, 1500-fold dilution, 2000-fold dilution, and 3000-fold dilution, respectively.

(18) Table 3 shows, the control efficacies of the 1000-fold diluted solution, the 1500-fold diluted solution and the 2000-fold diluted solution of the acaricide prepared in embodiment 3 on citrus red mites were significantly better than that of the 1000-fold diluted solution of the abamectin+fenpropathrin and that of the 1000-fold diluted solution of the amitraz. The control efficacy of the insecticide consisting of a 1000-fold dilution of abamectin+fenpropathrin and a 3000-fold dilution of the acaricide prepared in embodiment 3 on citrus red mites was tested and was significantly better than that of the 1000-fold diluted solution of the abamectin+fenpropathrin. The control efficacy of the insecticide consisting of a 1000-fold dilution of amitraz and a 3000-fold dilution of the acaricide prepared in embodiment 3 on citrus red mites was significantly better than that of the 1000-fold diluted solution of the amitraz. Thus, the results indicated that the acaricide of the present invention has an excellent acaricidal effect on citrus red mites, and has a significant synergistic effect on the 1000-fold diluted solution of the abamectin+fenpropathrin and the 1000-fold diluted solution of the amitraz.

(19) The control efficacies of the 1500-fold diluted solutions of the acaricides prepared in embodiments 1-5 on two-spotted spider mites were respectively tested. Ten cowpea seedlings were randomly selected from each orchard, and each treatment group was repeatedly tested 4 times. The average value was used as the final result, with water as a control. Before spraying and 1, 3, and 14 days after spraying, 50 leaves were randomly selected from different parts of the cowpea seedlings in each orchard, and the number of live mites in each treatment group was counted. SPSS 19.0 was used for variance analysis and LSD multiple comparison analysis of the data. The results are shown in Table 4.

(20) TABLE-US-00004 TABLE 4 Control efficacy on citrus red mites 1.sup.st day 3.sup.rd day 14.sup.th day Cardinal number Number Control Number Control Number Control before of efficacy/ of efficacy/ of efficacy/ Treatment administration mites % mites % mites % Acaricide 1500× in 428.25 0 100aA   2.5    99.42aA 0 100aA Embodiment 1 Acaricide 1500× in 457.5 2.5 99.45aA 0 100aA 2.5    99.45aA Embodiment 2 Acaricide 1500× in 512.75 0 100aA   0 100aA 0 100aA Embodiment 3 Acaricide 1500× in 398.5 3.5 99.12aA 0 100aA 1.5    99.62aA Embodiment 4 Acaricide 1500× in 385.25 0 100aA   1.5    99.61aA 0 100aA Embodiment 5 Water control 378.75 372.25 0bB  413.5  0bB 452.5  0bB Note: Different lowercase letters in the same column indicate a significant difference (P < 0.05), and different uppercase letters in the same column indicate a highly significant difference (P < 0.01); 1500× represents 1500-fold dilution.

(21) Table 4 shows, three days after spraying the 1500-fold diluted solution of the acaricide of the present invention, the control efficacies of the acaricides on two-spotted spider mites reached 99.42%-100%. Thus, the results indicate that the acaricide of the present invention has a quick effect on two-spotted spider mites, and has an excellent acaricidal effect.

(22) The control efficacies of the 1000-fold diluted solutions of the acaricides prepared in embodiments 1-5 against mite injury on goats were tested. In the same farm, 60 goats with typical clinical symptoms of mite disease were selected after clinical symptoms observation and microscopy, and the hair of all the test goats was cut off. Ten goats were randomly selected from each treatment group, and the acaricides with corresponding dilution were evenly smeared on the whole body of each goat; water was used as a control. The goats were fed separately. On the 3.sup.rd, 7.sup.th, and 30.sup.th days after the treatment, the dander was scraped from the back, buttocks and head of the goats with a sterilized convex knife for treatment and microscopy. The specimens were observed under a microscope. The mites are dead if their limbs do not move or the mite bodies are deformed, which is judged as negative; otherwise positive. If no live mite bodies are found, and no itchy and restless symptoms are found on the back, buttocks and head of the affected goats, it is regarded as a cure. Negative conversion rate of mite bodies=Number of goats with negative mite bodies/Number of experimental goats in the same group×100%. Cure rate of mite disease=Number of cured goats affected by mite disease/Number of experimental goats in the same group×100%. The results are shown in Table 5.

(23) TABLE-US-00005 TABLE 5 Control efficacy on citrus red mites 3.sup.rd day 7.sup.th day 30.sup.th day Negative Negative Negative conversion conversion conversion rate of rate of rate of mite Cure mite Cure mite Cure Treatment bodies % rate % bodies % rate % bodies % rate % Acaricide 80 0 100 0 100 100 1000× in Embodiment 1 Acaricide 70 10 100 0 100 100 1000× in Embodiment 2 Acaricide 90 0 100 0 100 100 1000× in Embodiment 3 Acaricide 70 0 100 0 100 90 1000× in Embodiment 4 Acaricide 70 10 100 0 100 100 1000× in Embodiment 5 Water control 0 0 0 0 0 0 Note: 1000× represents 1000-fold dilution.

(24) Table 5 shows, 30 days after an application of the 1000-fold diluted solution of the acaricide of the present invention, the negative conversion rate of mite bodies reached 100% within 7 days, and the cure rate reached 90%-100% on average in 30 days. Thus, the results indicate that the acaricide of the present invention has an excellent acaricidal effect on goat mite injury.

(25) The control efficacies of 600-fold diluted solution of the 72% cymoxanil+mancozeb applied once, twice and three times respectively on lettuce downy mildew were tested. The control efficacies of the insecticides consisting of 3000-fold diluted solutions of the acaricides prepared in embodiments 1-5 and 600-fold diluted solution of the 72% cymoxanil+mancozeb applied once on lettuce downy mildew were tested. The treatment area of each treatment group in the same vegetable garden is 3×3 m.sup.2. The measurement was repeated 5 times, and the average value was used as the final result, with water as a control. Each treatment group was sprayed with 7600-fold diluted solution of the 72% cymoxanil+mancozeb once, twice, and three times, and the interval was 7 days. The insecticides consisting of 3000-fold diluted solutions of the acaricides prepared in embodiments 1-5 and 600-fold diluted solution of the 72% cymoxanil+mancozeb were sprayed once. The front and back sides of the lettuce leaves were sprayed evenly each time, and water was used as a control. 21 days after the first spraying, 5 lettuce plants were randomly selected from each orchard, and 5 leaves of each plant were checked from bottom to top. Each leaf was graded according to the percentage of the leaf area occupied by the disease spots, and the disease index and control efficacy were calculated. The grading standards are as follows: grade 0 is no disease spots; grade 1 is the diseased area accounting for less than 5% of the entire leaf area; grade 3 is the diseased area accounting for 6% -10% of the entire leaf area; grade 5 is the diseased area accounting for 11% -25% of the entire leaf area; grade 7 is the diseased area accounting for 26% -50% of the entire leaf area; and grade 9 is the diseased area accounting for more than 50% of the entire leaf area. Disease index=(ΣNumber of diseased leaves of disease grade×Value of the disease grade)/(Total number of leaves investigated×Value of highest disease grade). Relative control efficacy (%)=[(Disease index of control area−Disease index of treatment area)/Disease index of control area]×100%. SPSS 19.0 was used for variance analysis and LSD multiple comparison analysis of the data. The results are shown in Table 6.

(26) TABLE-US-00006 TABLE 6 Control efficacy on lettuce downy mildew Disease Relative control Treatment index efficacy/% 72% Cymoxanil + mancozeb600× (applied once) 59  0cC 72% Cymoxanil + mancozeb 600× (applied twice) 28.4 51.0bB 72% Cymoxanil + mancozeb 600× (applied three times) 4.8 91.7aA Acaricide 3000× in Embodiment 1 + 72% 2.8 95.2aA Cymoxanil + mancozeb 600× Acaricide 3000× in Embodiment 2 + 72% 5.7 90.2aA Cymoxanil + mancozeb 600× Acaricide 3000× in Embodiment 3 + 72% 3.1 94.7aA Cymoxanil + mancozeb 600× Acaricide 3000× in Embodiment 4 + 72% 4.2 92.8aA Cymoxanil + mancozeb 600× Acaricide 3000× in Embodiment 5 + 72% 4.5 92.2aA Cymoxanil + mancozeb 600× Water control 58  0cC Note: Different lowercase letters in the same column indicate a significant difference (P < 0.05), and different uppercase letters in the same column indicate a highly significant difference (P < 0.01); 600× and 3000× represent 600-fold dilution and 3000-fold dilution, respectively.

(27) Table 6 shows, insecticide consisting of 3000-fold diluted solutions of the synergistic agents (acaricides) prepared in embodiments 1-5 and 600-fold diluted solution of the 72% cymoxanil+mancozeb only needs to be sprayed once to prevent the lettuce downy mildew to achieve the control efficacy of 600-fold diluted solution of the 72% cymoxanil+mancozeb sprayed three times, which is significantly better than the control efficacies of 72% cymoxanil+mancozeb sprayed once or twice. Thus, the results indicate that the synergistic agent of the present invention can significantly improve the control efficacy of some fungicides such as 72% cymoxani+mancozeb on the lettuce downy mildew.

(28) By using the glass slide method, the effects of the 1500-fold diluted solution and the 3000-fold diluted solution of the acaricide prepared in embodiment 3, the 1500-fold diluted solution of the ethoxy-modified trisiloxane, and the 1500-fold diluted solution of the solid sodium dioctyl sulfosuccinate prepared in embodiment 1 on the adult citrus red mites (Panonychus citri Mcgregor) were tested. Each treatment group had 50 citrus red mites, and the measurement was repeated 4 times, with water as a control. The number of live mites in each treatment group was counted at 10 minutes and again 72 hours after spraying, and the average value was used as the final result. SPSS 19.0 was used for variance analysis and LSD multiple comparison analysis of the data. The results are shown in Table 7.

(29) TABLE-US-00007 TABLE 7 Effect on adult citrus red mites Mortality after Mortality after Treatment 10 minutes/% 72 hours/% Ethoxy-modified trisiloxane 1500× 15.42dD 28.84dD Solid sodium dioctyl sulfosuccinate 20.35cC 62.45cC prepared in Embodiment 1 1500× Acaricide prepared in Embodiment 64.85aA 96.88aA 3 1500× Acaricide prepared in Embodiment 38.46bB 80.42bB 3 3000× Note: Different lowercase letters in the same column indicate a significant difference (P < 0.05), and different uppercase letters in the same column indicate a highly significant difference (P < 0.01); 1500× and 3000× represent 1500-fold dilution and 3000-fold dilution, respectively.

(30) Table 7 shows, compared with the 1500-fold diluted solution of ethoxy-modified trisiloxane and the 1500-fold diluted solution of sodium dioctyl sulfosuccinate prepared in embodiment 1, the mortality of adult citrus red mites treated with the 1500-fold diluted solution and the 3000-fold diluted solution of the acaricide prepared in embodiment 3 for 10 minutes and 72 hours was significantly increased. Thus, the results indicate that the acaricide of the present invention can significantly improve the acaricidal effect.

(31) The effects of the 1200-fold diluted solutions of the acaricides prepared in embodiments 1-5 on the citrus red mites (Panonychus citri Mcgregor) were tested. In vitro, citrus leaf culture method was used, the leaves were collected from the same healthy citrus tree; each citrus leaf was artificially inoculated with 20 female adult mites, each group treated with 5 leaves; and the measurement was repeated 4 times, with the average value as the final result. After culturing for 1 week, the leaves were immersed in the 1200-fold diluted solutions of the acaricides prepared in embodiments 1-5 for 3 seconds, with water as a control. After the surfaces of the leaves were dried, the culturing was continued for 1 week, and the number of citrus red mites and the number of eggs were counted under an anatomical microscope. SPSS 19.0 was used for variance analysis and LSD multiple comparison analysis of the data. The results are shown in Table 8.

(32) TABLE-US-00008 TABLE 8 Effect on citrus red mites Number of Number of mites eggs Acaricide 1200× in  9.46bB  1.45bB Embodiment 1 Acaricide 1200× in  8.64bB  1.85bB Embodiment 2 Acaricide 1200× in  1.56aA  0.25aA Embodiment 3 Acaricide 1200× in  7.37bB  1.85bB Embodiment 4 Acaricide 1200× in  7.25bB  1.65bB Embodiment 5 Water control 97.5cC 58.8cC Note: Different lowercase letters in the same column indicate a significant difference (P < 0.05), and different uppercase letters in the same column indicate a highly significant difference (P < 0.01); 1200× represents 1200-fold dilution.

(33) Table 8 shows, the acaricide of the present invention has an excellent exterminating effect on the citrus red mites and their eggs.

(34) In addition, it should be understood that although the present specification is described in terms of embodiments, but not each embodiment includes merely an independent technical solution. The foregoing description of the specification is merely for the sake of clarity. Those skilled in the art shall take the specification as a whole, and the technical solutions in each embodiment may be appropriately combined to form other implementations understandable to those skilled in the art.