The present disclosure discloses a method for targeted regulation of soil microbes to synchronize heavy metal/metalloid transformation and greenhouse gas emission reduction and use. The present disclosure discovers that by compounding methionine with an organic acid salt, the obtained formulation can significantly increase the ability of the soil microbes to promote arsenic methylation in a targeted mode, and meanwhile, and the methane production is effectively reduced in the presence of the methionine. In the present disclosure, the methionine/organic acid salt formulation is further loaded into a modified biochar material of a porous structure, so as to achieve the effect of slow release. The method of the present disclosure may effectively reduce absorption of inorganic arsenic by rice, achieve a significant reduction in the proportion of inorganic arsenic in the total arsenic in the rice and inhibit methane emission of the soils and reduce methane emission at the same time.

Provided are a methane-production inhibitor capable of inhibiting methane production for a long period of time, and a method for inhibiting methane production using the composition. A methane-production inhibitor composition contains one or more compounds selected from compounds represented by formula [I] as an effective ingredient, and a method for inhibiting methane production uses the composition. ##STR00001## (In formula [I], X represents an —OR.sub.1 group, a hydroxyl group, or a halogen atom, Y represents an —OR.sub.2 group or an —SO.sub.2R.sub.3 group, R.sub.1 represents a benzoyl group, R.sub.2 represents a methylsulfonyl group or a chloromethylsulfonyl group, and R.sub.3 represents a chloromethyl group or a hydroxymethyl group.)

Provided are a methane-production inhibitor capable of inhibiting methane production for a long period of time, and a method for inhibiting methane production using the composition. A methane-production inhibitor composition contains one or more compounds selected from compounds represented by formula [I] as an effective ingredient, and a method for inhibiting methane production uses the composition. ##STR00001## (In formula [I], X represents an —OR.sub.1 group, a hydroxyl group, or a halogen atom, Y represents an —OR.sub.2 group or an —SO.sub.2R.sub.3 group, R.sub.1 represents a benzoyl group, R.sub.2 represents a methylsulfonyl group or a chloromethylsulfonyl group, and R.sub.3 represents a chloromethyl group or a hydroxymethyl group.)

Methods of increasing soil water content are described. The methods may include applying a soil enhancement agent to the soil, where the soil enhancement agent includes one or both of (i) lactobionic acid and (ii) at least one salt of lactobionic acid. Treated soils with increased soil water content are also described. The treated soils may include a soil enhancement agent absorbed into the soil. The soil enhancement agent may include at least one salt of a lactobionic acid. Cations from the at least one salt of a lactobionic acid may aggregate at least a portion of the particles in the soil.

Methods of increasing soil water content are described. The methods may include applying a soil enhancement agent to the soil, where the soil enhancement agent includes one or both of (i) lactobionic acid and (ii) at least one salt of lactobionic acid. Treated soils with increased soil water content are also described. The treated soils may include a soil enhancement agent absorbed into the soil. The soil enhancement agent may include at least one salt of a lactobionic acid. Cations from the at least one salt of a lactobionic acid may aggregate at least a portion of the particles in the soil.

A soil treatment mixture includes a methyl sulphonic acid component; a surfactant component; and a water component soil treatment composition and application method that improves infiltration rates, horizontal distribution, and water retention. A fulvic acid component may also be incorporated into the mixture. In a particular embodiment, the soil treatment mixture includes approximately 20% by weight of methylsulphonic acid component; 5% by weight of the surfactant component; 5% by weight of the fulvic acid component; and 70% of the water component.

A soil treatment mixture includes a methyl sulphonic acid component; a surfactant component; and a water component soil treatment composition and application method that improves infiltration rates, horizontal distribution, and water retention. A fulvic acid component may also be incorporated into the mixture. In a particular embodiment, the soil treatment mixture includes approximately 20% by weight of methylsulphonic acid component; 5% by weight of the surfactant component; 5% by weight of the fulvic acid component; and 70% of the water component.

A method for altering a characteristic of the ground. The method comprises the steps of preparing a lignocellulosic material, suspending the lignocellulosic material in a slurry to create a lignocellulosic slurry, and creating a fluid movement of the lignocellulosic slurry. The method further includes the steps of resuspending a portion of the lignocellulosic slurry with the fluid movement; and injecting the lignocellulosic slurry below the surface of the ground.

The invention relates to agriculture and can be used to restore soil fertility. A method for remediation of contaminated lands involves pouring and introducing a bioreagent to a depth into the soil prepared for purification. Remediation is carried out in 2 steps: in the first step, slit-like or round holes are made in the infected area to a depth of 25 cm, poured with water, afterwards, 5-6 hours later, this area is poured with a bioreagent in the form of a humus-containing suspension in an amount of up to 400 g per kg of soil containing strains: Acinetobacter calcoaceticus VKPM V-4883, Pseudomonas denitrificans VKPM-4884, Pseudomonas sp. “longa” VKPM V-4885, Rhodococcus erythropolis in an amount of (6-8).Math.10.sup.9, (3-4).Math.10.sup.9 (2-3).Math.10.sup.9, (1-2).Math.10.sup.9 cells per 1 L of solution, respectively, in the ratio, wt. % 4.8:2.4:1.7:1.0. In the second step, 8-10 days later, half the initial dose of the concentrate of the humus-containing suspension is introduced. After introduction of the second reduced dose of the humus-containing suspension, watering is continued for 14 days. The distance between the slit-like or round holes is 8-10 cm. The proposed method for remediation of contaminated lands provides for treatment efficiency and a reduction in the degree of decontamination from a high degree of contamination to the MPC (maximum permissible concentration) level, preservation of soil biocenosis and restoration of soil fertility.

The invention relates to agriculture and can be used to restore soil fertility. A method for remediation of contaminated lands involves pouring and introducing a bioreagent to a depth into the soil prepared for purification. Remediation is carried out in 2 steps: in the first step, slit-like or round holes are made in the infected area to a depth of 25 cm, poured with water, afterwards, 5-6 hours later, this area is poured with a bioreagent in the form of a humus-containing suspension in an amount of up to 400 g per kg of soil containing strains: Acinetobacter calcoaceticus VKPM V-4883, Pseudomonas denitrificans VKPM-4884, Pseudomonas sp. “longa” VKPM V-4885, Rhodococcus erythropolis in an amount of (6-8).Math.10.sup.9, (3-4).Math.10.sup.9 (2-3).Math.10.sup.9, (1-2).Math.10.sup.9 cells per 1 L of solution, respectively, in the ratio, wt. % 4.8:2.4:1.7:1.0. In the second step, 8-10 days later, half the initial dose of the concentrate of the humus-containing suspension is introduced. After introduction of the second reduced dose of the humus-containing suspension, watering is continued for 14 days. The distance between the slit-like or round holes is 8-10 cm. The proposed method for remediation of contaminated lands provides for treatment efficiency and a reduction in the degree of decontamination from a high degree of contamination to the MPC (maximum permissible concentration) level, preservation of soil biocenosis and restoration of soil fertility.