Selenium-enriching enhancer for plant cultivation and preparation and use thereof

Abstract

A selenium-rich enhancer for plant cultivation and preparation and application thereof. The selenium-rich enhancer contains: an organic selenocyano-compound. The organic selenocyano-compound is selected from one or a combination of the compounds of the structure of Formula I or Formula II, Formula I: RSeCN, wherein, R is alkyl or aromatic groups; and Formula II: (RSeCN).sub.nA, wherein, R is alkyl or aromatic groups, n is an integer of 1-5, and A is a cation. The selenium-rich enhancer is employed to cultivate plants by utilizing the organic selenocyano-compound, and the survival rates, yields and organic selenium contents of plants are all improved. When pepper is planted by using that, the selenium content can reach more than 180 g/kg.

Claims

1. A selenium-rich enhancer for plant cultivation, wherein the selenium-rich enhancer comprises an organic selenocyano-compound; and the organic selenocyano-compound is selected from the compounds of Formula II, Formula II: (RSeCN).sub.nA, wherein R is alkyl, carboxyl or aromatic groups, n is an integer of 1-5, and A is a cation, the organic selenocya no-compound is 2-10 parts by weight, the selenium-rich enhancer further comprises surface wetting agents, wherein the surface wetting agents are 1 part by weight, and the selenium-rich enhancer further comprises one or a combination of humic acid and boric acid, wherein the humic acid is 1-10 parts by weight, and the boric acid is 1-10 parts by weight.

2. The selenium-rich enhancer for plant cultivation according to claim 1, wherein the selenium-rich enhancer further comprises water.

3. The selenium-rich enhancer for plant cultivation according to claim 1, wherein the selenium-rich enhancer further comprises a fertilizer.

4. The selenium-rich enhancer for plant cultivation according to claim 1, wherein the organic selenocyano-compound is one or a combination of selenocyanoacetic acid, potassium selenocyanoacetate, sodium selenocyanoacetate and potassium selenocyano propyl sulfonate.

Description

DETAILED DESCRIPTION OF THE DISCLOSURE

(1) The present invention will be further illustrated below by referring to the particular embodiments, to enable a person skilled in the art to better understand and implement the present invention, but the embodiments are not taken as limiting the present invention.

(2) The selenium-rich enhancer for plant cultivation that is provided by the present invention comprises an organic selenocyano-compound and a surface wetting agents, and the organic selenocyano-compound is selected from one or a combination of the compounds of the structure of Formula I or Formula II,

(3) Formula I: RSeCN, wherein, R is alkyl or aromatic groups; and

(4) Formula II: (RSeCN).sub.nA, wherein, R is alkyl or aromatic groups, n is an integer of 1-5, and A is a cation (which may be a metal ion such as potassium, sodium, magnesium and aluminum, and may also be other cations).

(5) The selenium-rich enhancer of the present invention is rich in organic selenium, and by conducting foliage spray, root irrigation application or suspension bottle infusion to plants, it is absorbed by the plants and converted into selenium substituted amino acids, which can be easily absorbed by human body, so the agricultural products are rich in the organic selenium. After eating, people can well absorb that and improve the immunity.

(6) The selenium-rich enhancer for plant cultivation of the present invention may further comprise water, a fertilizer, humic acid or boric acid, to promote the absorption and conversion of the organic selenocyano-compound by plants.

(7) The method for preparing the selenium-rich enhancer for plant cultivation that is provided by the present invention is: mixing the components to obtain the selenium-rich enhancer.

(8) The method for using the selenium-rich enhancer for plant cultivation of the present invention is flexible, wherein it may be solely applied to plants by foliage spray, suspension bottle infusion or root fertilization, and may also be used with conventional inorganic nutrient fluid foliage fertilizers, organic amino acid nutrient foliage fertilizers, suspension bottle nutrient fluid or root manure.

(9) The present invention will be further illustrated below by referring to several examples:

(10) The components and the corresponding parts by weight of the selenium-rich enhancers for plant cultivation of Examples 1-16 are shown in the following table.

(11) TABLE-US-00001 Solid Liquid state state Humic Boric Organic selenocyano-compound Surfactant Water fertilizer fertilizer acid acid Example 1 potassium selenocyanoacetate, 4 parts OP-20, 1 100 0 0 0 0 part parts Example 2 potassium selenocyanoacetate, 5 parts OP-20, 1 100 0 0 0 0 part parts Example 3 potassium selenocyanoacetate, 6 parts OP-20, 1 100 0 0 0 0 part parts Example 4 benzyl selenocyanate, 2 parts sorbitol, 1 100 50 0 0 0 part parts parts Example 5 benzyl selenocyanate, 10 parts sorbitol, 1 90 0 50 8 6 part parts parts parts parts Example 6 phenyl selenocyanate, 2 parts OP-10, 1 100 0 0 1 0 part parts part Example 7 phenyl selenocyanate, 10 parts OP-10, 1 90 0 0 0 10 part parts parts Example 8 potassium selenocyano propyl sulfonate, 5 tween-80, 100 10 0 10 0 parts 1 part parts parts parts Example 9 potassium selenocyano propyl sulfonate, 8 tween-80, 100 0 10 0 2 parts 1 part parts parts parts Example 10 potassium selenocyano propyl sulfonate, 10 tween-80, 100 0 8 5 1 parts 1 part parts parts parts part Example 11 potassium selenocyano propyl sulfonate, 10 tween-80, 100 0 8 0 0 parts 1 part parts parts Example 12 sodium selenocyanoacetate, 5 parts; tween-80, 100 0 8 5 1 1,4-Phenylenebis(methylene)selenocyanate, 1 part parts parts parts part 5 parts Example 13 sodium selenocyanoacetate, 5 parts; tween-80, 100 0 8 5 1 1,4-Phenylenebis(methylene)selenocyanate, 2 parts parts parts parts part 5 parts Example 14 potassium selenocyano propyl sulfonate, 15 tween-80, 100 0 8 5 1 parts 1 part parts parts parts part Example 15 potassium selenocyano propyl sulfonate, 10 tween-80, 100 50 50 5 1 parts 1 part parts parts parts parts part Example 16 potassium selenocyano propyl sulfonate, 10 tween-80, 100 0 8 15 1 parts 1 part parts parts parts part Example 17 potassium selenocyano propyl sulfonate, 10 0 100 0 0 0 0 parts parts Comparative 0 OP-20, 1 100 0 0 0 0 Example 1 part parts Comparative sodium selenite 2 parts OP-10, 1 100 0 0 0 0 Example 2 part parts

(12) The solid state fertilizers that are employed in the Examples are commercially available water-soluble solid state organic fertilizers (for example, the Fu Jin Men water flush fertilizer that is produced by Henan Qiangsheng Agricultural Science and Technology Development Limited Company), and the liquid state fertilizers are commercially available microelement fertilizers (for example, the Shou Kang No. 1 nutrient fluid that is produced by Huzhou Shou Kang Biological Science and Technology Limited Company).

(13) The planting test takes pepper planting as the example, and conducts routine seed presprouting, seeding, and seedbed and field management of pepper. The planting area is 40 m.sup.2, and the row spacings between the plants are 4080 cm. The selenium-rich enhancers of each of the Examples are diluted by water by 500 times, and used to conduct foliage spray, which was conducted once individually in the blooming and fruit setting phase and the fruit expanding phase of the pepper.

(14) The test result is as shown in Table 1.

(15) TABLE-US-00002 Total Survival selenium rate Yield content (%) (kg) (g/kg) Example 1 92.6 130 95.6 Example 2 93.1 133 106.2 Example 3 92.7 131 114.1 Example 4 92.8 135 74.3 Example 5 93.5 135 188.9 Example 6 93.4 130 65.3 Example 7 92.1 128 181.5 Example 8 93.2 130 98.5 Example 9 92.3 125 170.2 Example 10 93.3 134 182.1 Example 11 92.5 130 170.2 Example 12 93.5 133 182.8 Example 13 93.1 133 183.0 Example 14 93.0 133 181.8 Example 15 93.3 137 182.4 Example 16 93.0 130 180.1 Example 17 91.8 124 80.5 Comparative 91.8 124 40.5 Example 1 Comparative 90.9 120 55.3 Example 2

(16) It can be seen from the result that, compared with water, which is used in Comparative Example 1, and the inorganic selenium compound (sodium selenite), which is used in Comparative Example 2, the selenium-rich enhancers for plant cultivation of Examples 1-16 of the present invention can significantly increase the selenium contents of the plants, and additionally increase the survival rates and yields of the plants.

(17) The above embodiments are merely preferable embodiments that are presented to fully illustrate the present invention, and the protection scope of the present invention is not limited thereto. The equivalent substitutions or alternations that are made by a person skilled in the art on the basis of the present invention all fall within the protection scope of the present invention. The protection scope of the present invention is limited by the claims.