Agent for preventing and treating plant continuous cropping disease and preparation method thereof
A technology for the prevention and control agent of heavy cropping disease, which is applied in the field of plant heavy cropping disease prevention and control agent and its preparation, which can solve the problems of difficult application, high cost, and large dosage, and achieve the effect of low use cost and wide control spectrum
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Embodiment 1
[0027] The preparation of 30wt% content preparation:
[0028] 1. the mass concentration of 70g adsorbent activated clay and 33g is the avermectin aqueous solution of 30wt%, mixes granulation, the moisture content after low-temperature drying is lower than 5%, is placed in the adsorption container, and the adsorption container communicates with the vaporizer.
[0029] The raw material of adsorbent activated clay is powder, 100~200 mesh, and needs to be processed and granulated before use, with a particle diameter of 0.3~0.5cm;
[0030] ② Chloropicrin is placed in a vaporizer, and when heated to 70°C~boiling point, the chloropicrin is vaporized, and the adsorption temperature of the adsorption vessel is kept at 4~10°C. The vaporized chloropicrin is adsorbed by the product of step ①. When the amount is 20g, the reaction is terminated, and the reaction product in the adsorption tower is taken out, and when the total weight of the product is 100g, the finished product of round gran...
Embodiment 2
[0033] The preparation of 20wt% content preparation:
[0034] 1. reaction device such as embodiment 1, the mass concentration of 80g activated carbon and 33g is the abamectin aqueous solution of 30wt%, mixes granulation, the moisture content after low-temperature drying is lower than 5%, is placed in the adsorption container, and the adsorption container connected to the vaporizer.
[0035] ② Chloropicrin is placed in a vaporizer, and when heated to 70°C~boiling point, the chloropicrin is vaporized, and the adsorption temperature of the adsorption vessel is kept at 4~10°C. The vaporized chloropicrin is adsorbed by the product of step ①. When the amount is about 10g, the reaction is terminated, the reaction product in the adsorption tower is taken out, and when the total weight is 100g, the finished product of round granular solid dosage form is obtained, and the particle size is 0.5~5cm.
Embodiment 3
[0037] For example: taking the products described in Examples 1 and 2 applied to greenhouse muskmelon as an example, apply 30g per square meter, bury it in the soil layer 20-30cm, plant-to-plant distance 20cm, apply in holes, and the experimental parameters are as shown in Table 1:
[0038] 1. Control effect on melon nematode
[0039]
[0040]
[0041] From the data in the table, it can be seen that the product prepared by the method of the present invention has less application amount, remarkable effect, no need for special experimental conditions, simple operation process, good repeatability, and can achieve high-quality and high-efficiency prevention and treatment of plant heavy cropping disease. This method has a wide range of applications and prospects.
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