Mamestra brassicae nuclear polyhedrosis virus-containing pesticidal suspending agent and preparation method thereof

Abstract

The invention discloses a mamestra brassicae nuclear polyhedrosis virus-containing pesticidal suspending agent. The mamestra brassicae nuclear polyhedrosis virus-containing pesticidal suspending agent is prepared from mamestra brassicae nuclear polyhedrosis virus raw powder, gamma-polyglutamic acid, a stabilizer, a surfactant, synergist, a light protectant, a dispersing agent and water. Compared with the prior art, the mamestra brassicae nuclear polyhedrosis virus-containing pesticidal suspending agent has the following advantages that the biodegradability is achieved, gamma-PGA is a high-molecular polymer which is synthesized by microorganisms and prepared from glutamic acid through alpha-amino and gamma-carboxyl in a peptide bond form, can be completely degraded by the microorganisms and is friendly to people and the environment; the capacity of the mamestra brassicae nuclear polyhedrosis virus-containing pesticidal suspending agent for resisting irradiation of ultraviolet rays in sunlight in the using process is improved, and the pesticidal activity of the pesticidal suspending agent is 3.40 times that of a control group after the pesticidal suspending agent is irradiated by the sunlight for 7 days; the adhesion capacity of the mamestra brassicae nuclear polyhedrosis virus-containing suspending agent on plants is improved, the suspending agent is resistant to rainwash, the pesticidal activity of the suspending agent can reach 2.52 times or above that of the control group, and therefore the residual period is prolonged.

Description

technical field [0001] The invention belongs to the technical field of biological insecticides, and in particular relates to a cabbage armyworm nucleopolyhedrosis virus insecticidal suspension and a preparation method thereof. Background technique [0002] The problem of environment and resources has become a major problem facing human beings. The annual loss of pests and weeds in the world accounts for about one-third of the total grain output. Resistance is generally produced, and at the same time, it pollutes the soil, the environment and the atmosphere; the pesticide residues in agricultural by-products also directly endanger human health and destroy the ecological balance. With the improvement of economic level, people put forward higher requirements for food safety and environment, and therefore, biopesticides have developed rapidly. [0003] Biopesticides mainly include biochemical pesticides (insect growth regulators, plant regulators, hormones, pheromones) and micr...

AI Technical Summary

Problems solved by technology

[0007] The purpose of the present invention is to solve the prior art needs to add a large amount of photoprotectant and synergist to enhance the anti-ultraviolet ability and insecticidal activity of baculovirus suspension, which limits the defects of developing high-content, low-consumption novel preparations, Provided is a cabbage armyworm nucleopolyhedrosis virus insecticidal suspension with low cost and capable of improving ultraviolet resistance and insecticidal activity and its preparation method

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