Bacteria medicament mixture for preventing and controlling weed in rice field

Abstract

The invention discloses a bacteria medicament mixture for preventing and controlling weed in a rice field, which is characterized in that: curvularia lunata strain B6 (Wakker) Boedijn with the collection number of CGMGGNO.2928 and cyhalofop-butyl are adopted as active ingredients and proper solvent, surfactant, thickener and stabilizer are adopted as auxiliary materials, and then the active ingredients and the auxiliary materials are subjected to mechanical grinding to prepare a suspension system, wherein the concentration of the active ingredient curvularia lunata strain B6 is (0.1-10)*10<8>spores / ml, and the mixture comprises the following components in percentage by mass: 0.1 to 10 percent of cyhalofop-butyl, 1 to 10 percent of surfactant, 1 to 10 percent of stabilizer, 0.5 to 5 percent of thickener and the balance of solvent. The bacteria medicament mixture is used for preventing and controlling various kinds of weed in the rice field and has the advantages of safety for rice, wide weed controlling range and capability of controlling the weed in the entire growth period of the rice. The invention provides a new herbicide prepared by compounding stable and efficient post-emergence microorganisms with a chemical pesticide, and the new bacteria medicament mixture is environmental-friendly, prevents and controls various kinds of weed in the rice field and obviously increases the yield.

Description

technical field [0001] The invention relates to a paddy field herbicide compounded by novel microbial fungi and chemical pesticides, belonging to the field of agricultural chemicals. Background technique [0002] Curvularia crescenae B6 (preservation number CGMGG No.2928; preservation unit: General Microbiology Center of China Committee for the Collection of Microbial Cultures; preservation unit address: Datun Road, Chaoyang District, Beijing; preservation date, March 5, 2009; Classification and name: Curvularia lunata) is a newly developed herbicide fungus. After a large number of experimental studies, it has shown that it has high biological activity against barnyardgrass in paddy fields, and it is effective in controlling barnyard grass in paddy fields. High, little impact on the ecological environment of rice fields, no residual toxicity, no phytotoxicity, and obvious increase in yield. However, when the fungus is used to control weeds in paddy fields, the dosage is rel...

AI Technical Summary

Problems solved by technology

[0005] At present, the main dosage forms used for microbial fungicides are water preparations and wettable powders. The water preparations contain low active ingredients, and the amount in the process of packaging, transportation, and use is relatively large, and the cost of use is high; wettable powders have high active ingredients. However, there are dust drift problems during processing, packaging and use, and the active ingredients are degraded by the acidity or alkalinity of the carrier surface during storage.

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