Preparation method of biological preparation for preventing and controlling vegetable nematode disease

Abstract

The invention discloses a preparation method of a biological preparation for preventing and controlling a vegetable nematode disease. The preparation method comprises the steps of firstly culturing paecilomyces lilacinus by virtue of a culture medium until mature, adding chitosan, and carrying out mixed culture, so as to obtain the biological preparation. According to the preparation method, paecilomyces lilacinus and chitosan are well combined together and do not need to be separately used, so that the use is convenient, the cost is low, the effect is good; furthermore, the prepared biological preparation for preventing and controlling the vegetable nematode disease can be used during soil preparation fertilization, growing period and flowering and fruit bearing periods, is stable in field use effect and has efficacies of enhancing fertility, increasing field, improving quality, saving labor, increasing benefit, reducing residual toxicity, improving soil quality and eliminating nematodes.

Description

technical field [0001] The invention relates to a biological agent, in particular to a preparation method of a biological agent for preventing and treating vegetable nematode disease. Background technique [0002] The root-knot nematode mainly damages the vegetable roots, and the lateral roots and fibrous roots of vegetables are the most vulnerable. Nodules or root knots of different sizes are produced on the affected roots. The root knots are white and soft at first, and then become light yellowish brown or dark brown. The surface is rough and sometimes cracked. When the root knot is cut open, small white pearly particles can be seen, which are female adults of root knot nematode. Vegetables grow slowly after being infected by root-knot nematodes, and the leaves are small and yellow. When the disease is severe, the plants are short, not firm or poorly firm. In high temperature and dry weather, the plants are easy to wilt or even die. Plant nematodes often occur locally in...

AI Technical Summary

Problems solved by technology

The currently used biocontrol agents are only Nematode Bic and Abamectin

Abamectin is mostly used in the control of vegetable root-knot nematodes, and abamectin granules can be used for furrow application or hole application, but as a biological pesticide, abamectin exists in almost all biological pesticides. Weaknesses of root-knot nematode control are not complete, and the effect of field use is not stable