Disease and insect prevention cold-resistance rice seed coating

Abstract

The invention relates to a disease and insect prevention cold-resistance rice seed coating. The rice seed coating is prepared from smashing and mixing active ingredients such as bactericide prochloraz, pesticide thiamethoxam, cold-resistance component fennel fruit extractives, growth regulator sodium heteroauxin, micronutrient fertilizer zinc oxide and the like, and inactive ingredients such as film-forming agent methyl chitosan, colorant, auxiliaries and the like; the mass ratio of the coating seeds is 1:(200-260). The control efficiency for seedling stage bakanae disease, brown spot disease,rice blast and pythium rot can reach 80-96%, and the control efficiency for seedling stage rice planthoppers, rice thrips and lissorhoptrus oryzophilus can reach 82-93%. The contents of stress resistance materials free proline and soluble sugar inside rice seedlings can be obviously increased, the activity of stress tolerant enzymes POX, CAT and SOD inside the rice seedlings is improved, the seedling rate is increased by 10-21%, and the yield is increased by 8-15%. The rice seed coating is easy and convenient to produce, low in cost and obvious in disease, insect and cold resistance, and hasthe good economic, social and ecological benefits.

Description

technical field [0001] The invention relates to a preparation for coating rice seeds, and belongs to the fields of novel pesticide preparation technology and rice cultivation technology. Specifically, it is a kind of anti-disease, insect-proof and cold-resistant rice seed coating agent, which is composed of active ingredients such as fungicides, insecticides, cold-resistant ingredients, growth regulators, trace element fertilizers, and film-forming agents, colorants, auxiliary agents, etc. Inactive ingredients, rice seed coating agent prepared by crushing and mixing. Background technique [0002] The harm of plant diseases and insect pests to rice growth has always been an important issue that farmers are very concerned about and agricultural experts try to solve. Although the traditional seed treatment methods such as chemical seed dressing and chemical seed soaking have certain effects, the adhesion of the chemical to the seeds is poor, the seeds are easy to fall off when...

AI Technical Summary

Problems solved by technology

[0006] The existing rice seed coating agent technology has the following major deficiencies: (1) Most of the film-forming agents used in the existing rice seed coating agent are artificially synthesized polymer materials, such as polyvinylpyrrolidone, polyvinyl acetate, etc., which are difficult to absorb in soil. Degradation, the residual soil will pollute the soil; the coating film formed during coating has poor air permeability and water permeability, the emergence rate of coated seeds is low, and the active ingredients have a short duration

(2) The dosage form of the existing rice seed coating agent is basically a suspension type, and the suspension type rice seed coating agent is easy to stratify and precipitate, and the active ingredient is easy to decompose

(3) Existing suspension-type rice seed coating agents need to add a large amount of auxiliary ingredients such as emulsifiers, dispersants, defoamers, thickeners, and antifreeze agents. Not only the production process is complicated and the cost is high, but the addition of these auxiliary ingredients Harmful to the soil environment

At present, rice production in my country mainly adopts plastic film mulching, or uses cold-resistant preparations made of abscisic acid, salicylic acid, etc. , and it is difficult to predict when cold weather will occur, and effective measures cannot be taken in time; the latter uses expensive chemical components such as abscisic acid and salicylic acid, and the product is expensive and costly, and it is difficult to promote it on a large scale