Superfine powder type rape seed coating agent

Abstract

The invention relates to a superfine powder type rape seed coating agent. The superfine powder type rape seed coating agent is prepared by ultrasonically crushing active ingredients including bactericide hymexazol, insecticide imidacloprid, plant growth regulator compound sodium nitrophenolate, trace element fertilizer boric acid and the like, and inactive ingredients including film-forming agent carboxymethyl chitin, pigment, auxiliaries and the like. The superfine powder type rape seed coating agent is suitable for coating treatment of various rape seeds under different ecological conditions; the mass ratio of coated drug to seeds is as high as 1 to 150-180; a coated film with a film pore path is formed on the surface of the seed during a coating process; the active ingredients can be slowly released by the film pore path, so that the prevention and treatment agent for stalk break at the rape seedling period is 83%-97%, and the prevention and treatment rate for aphids and soil insects is 85%-96%; a rape root system is developed and strong in stress resistance, so that the emergence rate is improved by 10%-19%, the seedling emergency percentage is improved by 8%-17% and a yield-increasing effect is obvious. Besides, the superfine powder type rape seed coating agent is simple and convenient to produce, low in cost and convenient to use.

Description

technical field [0001] The invention relates to a preparation for crop seed coating treatment, and belongs to the fields of novel pesticide preparation technology and rapeseed cultivation technology. Specifically, it is a superfine powder rape seed coating agent, which is composed of active ingredients such as fungicides, insecticides, plant growth regulators, and trace elements, and inactive ingredients such as film-forming agents, colorants, and auxiliary agents. Coating agent for rapeseed prepared by ultrasonic pulverization. Background technique [0002] Crop seed coating is an agricultural high-tech, which can coat pesticides, growth regulators, micro-fertilizers and other active ingredients in the coating film formed on the surface of seeds, and release them slowly during seed germination and growth, effectively preventing and controlling seedlings. Diseases and insect pests, promotion and control of seedling growth, saving planting and medicine, saving labor and time...

AI Technical Summary

Problems solved by technology

However, so far, the seed coating agents developed and applied are mainly seed coating agents for staple crops such as wheat and corn, while rape seed coating agents have not been widely promoted, and the coating rate of rapeseed is still less than 16%.

The main reason is that the rape seed coating agent developed and tested at present is basically a pill-type rape seed-coating agent and a suspension-type rape seed-coating agent. Among them, the pill coat is easy to fall off after the seed is coated with the pellet-type rape seed-coating agent, and the seed is relatively easy to sow after sowing. Thick pill coating is difficult to crack, poor air permeability, slow germination of coated seeds, low seedling emergence rate and seedling rate; the existing suspension type rapeseed coating agent is produced by wet method, the process is complicated, the content of active ingredients is low, and the production and storage are difficult. high shipping cost

[0005] The prior art has the following major deficiencies: (1) The thick ball coating formed by the pelletized rapeseed coating agent on the surface of the seed has poor compressive strength, and the coated seeds contain pesticides, plant The pill coating of active ingredients such as growth regulators is easy to fall off, not only the loss of active ingredients is large, the effect of the seed coating agent is poor, and the environment is polluted

(2) After the pilled seeds are sown, the cracking speed of the pill coat is very slow, and the water and oxygen required for the normal germination of rape seeds in the pill coat are difficult to meet, resulting in low germination potential and significantly delayed emergence

(3) When the pill coat is cracked, the active ingredient dissolves rapidly and the concentration of the active ingredient around the seeds is too high in a short time, which inhibits the germination of rapeseed seeds, resulting in low emergence and seedling rates

(4) The existing suspension-type rapeseed coating agent needs to add auxiliary components such as emulsifier, dispersant, antifreeze, and the cost of raw materials is high; it is produced by wet method, the process is complicated, and the production cost is high; the content of active ingredients is low, and the coating drug The mass ratio of species is only 1:20-50, and the storage and transportation costs are high

(5) The existing suspension type rapeseed coating agent is easy to stratify and precipitate during storage, and the active ingredients are easy to decompose