Compound biological insecticide capable of preventing and treating prodenia litura

Abstract

The invention discloses a compound biological insecticide capable of preventing and treating prodenia litura. The compound biological insecticide is a compound type insecticide prepared from the following components by weight percent: 8-15% of a basil immersing solution and 85-92% of a rice fermented solution, wherein the basil immersing solution is prepared by taking 10-15% of tender leaves of clove basils and 5% of brewed vinegar, adding water until the volume is 100% and immersing for 3 days; the rice fermented solution is prepared by taking 15-25% of rice and 3-8% of rapeseed cake, and adding water until the volume is 100%. Zymophyte comprises bacillus mucitaginosus and bacillus thuringiensis, which are inoculated according to the amount of 0.1% respectively, the fermentation time is 7 days and the fermentation temperature is 30 DEG C. By actual large-field planting, spawns and larvae prodenia litura can be effectively inhibited, and the effects of repelling the larvae and adults are realized; and crops can be induced to produce protectin, the robust growth of the crops is facilitated and the quality of the crops is improved.

Description

technical field [0001] The invention relates to a compound biological insecticide for controlling Spodoptera litura, belonging to the technical field of plant pest control. Background technique [0002] The larva of Spodoptera litura is a kind of omnivorous pest, which harms economic crops such as cabbage, lettuce, cabbage, eggplant, tomato, pepper, etc. It belongs to Lepidoptera Noctuidae in classification. Large, the newly hatched larvae eat the back of the leaf and eat the mesophyll, leaving only the epidermis. The 3rd instar larvae will eat the entire leaf, causing the leaves to be incomplete, or even eat them all, eating the flower buds and causing no fruit. The fruit drills holes and nibbles, causing fruit rot and fruit rot, resulting in no fruit harvest, making it lose its commodity value, Spodoptera litura is prone to outbreaks, and when larvae are first found on the field, it can cause damage within 3-7 days. For large-scale outbreaks, the current common control me...

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Problems solved by technology

[0002] The larva of Spodoptera litura is a kind of omnivorous pest, which harms economic crops such as cabbage, lettuce, cabbage, eggplant, tomato, pepper, etc. It belongs to Lepidoptera Noctuidae in classification. Large, the newly hatched larvae eat the back of the leaf and eat the mesophyll, leaving only the epidermis. The 3rd instar larvae will eat the entire leaf, causing the leaves to be incomplete, or even eat them all, eating the flower buds and causing no fruit. The fruit drills holes and nibbles, causing fruit rot and fruit rot, resulting in no fruit harvest, making it lose its commodity value, Spodoptera litura is prone to outbreaks, and when larvae are first found on the field, it can cause damage within 3-7 days. For large-scale outbreaks, the current common control methods are divided into physical control methods, which use the light-repellent nature of adults flying at night, trap and kill with purple and black light lamps in the peak period, and use sweet and sour liquid + Trichomonas to trap and kill, but the effect of trapping and killing is in practice. The effect of use is not good. Common chemical pesticides for chemical control include malathion, diflubenzuron, trichlorfon, fenvalerate, flubenzuron and other insecticides to kill insects, but the above chemical pesticides do not have The environment is harmonious, and there will be residual problems. Facing the food safety requirements of the market, it is gradually developing towards the direction of pollution-free and ecological organic planting. The requirements for no pesticide residues and internal quality are getting higher and higher. It is really necessary to discuss the prevention and control of twill The biological source insecticides of noctuid moths, look for another method that can improve the self-protection of plants, and can avoid the infestation of target crops by larvae and adults, and overcome the pesticide residues and resistance caused by the spraying of chemical pesticides. medicinal problem

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