A method for preventing and controlling the nymphs of the false-eyed green leafhopper in an organic ecological tea garden

Abstract

The invention relates to a use technology for preventing empoasca vitis nymphs in an organic ecological tea garden by using a spray irrigation method and particularly relates to a method for preventing empoasca vitis nymphs in an organic ecological tea garden. The method includes installation of a spray irrigation device, determination of peak seasons when empoasca vitis nymphs appear by means of a pot patting method and a tip examining method, and spray irrigation for insect prevention. According to the method for preventing empoasca vitis nymphs in the organic ecological tea garden, spray irrigation of fresh water is firstly used in domestic for preventing empoasca vitis nymphs in the organic ecological tea garden, any chemical pesticide is not added, and the method is suitable for being applied to the organic ecological tea garden; in late spring and early summer of each year when empoasca vitis nymphs are prone to break out and natural enemies are few, peak seasons when empoasca vitis nymphs appear are determined by means of the pot patting method and the tip examining method, and empoasca vitis nymphs are timely prevented by using the spray irrigation method, so that development of pest population can be effectively controlled, loss of tea production due to outbreak of imagoes is reduced, and the method has an important significance on aspects of reduction of pesticide residue in tea, improvement of quality safety of tea, and the like; meanwhile, a spray irrigation system can be further used to replenish water and apply fertilizer to tea trees, and the method is an important measurement for general management of the organic ecological tea garden.

Description

technical field [0001] The invention belongs to the field of plant protection, and in particular relates to an eco-environmental protection technology for preventing and controlling nymphs of the false-eyed green leafhopper in organic tea gardens by using a sprinkler irrigation method. Background technique [0002] my country is a big tea producing country. As of 2010, my country's tea plantation area reached 1.97 million hectares, and its tea production ranks first in the world. Tea has always been a large traditional export commodity in my country. In recent years, tea exports have encountered foreign green trade barriers, and pesticide residues are the main reason. In order to solve the problems faced by my country's tea export, building organic ecological tea gardens is the development trend of my country's tea industry. Leafhopper with false eyes is the most important control object in tea gardens in my country at present. It can cause large outbreaks in tea gardens al...

AI Technical Summary

Problems solved by technology

The microorganisms are mainly pathogens such as Beauveria bassiana coccidioides, I. fumigatus and I. javanica. The problems in production and application are that the requirements for environmental conditions are relatively high, and there will be some contact bacteria soon after the bacteria are sprayed. The spore-forming leafhopper nymphs cast off their skins to get rid of the infection, and the drug effect is not strong, so they still need to be used in combination with chemical pesticides; predatory spiders are not the exclusive natural enemies of the green leafhopper, and their ecological niche overlap is relatively small, especially for the false leafhoppers. The nymphs and adults of the green leafhopper above the third instar have high flexibility, and it is difficult for predatory spiders to control this pest; the parasitic natural enemies mainly include two kinds of egg parasitoids, the leafhopper three-clawed wasp and the micro-crack-cracked wasp wasps, parasitic wasps have a significant control effect on Leafhopper chrysalis, but there is an obvious hysteresis effect

Adult nymphs are good at avoiding the back of the leaves. Due to the dense branches of the tea canopy, the tea farmers sprayed chemical pesticides not comprehensively enough. Some tea leaves are not exposed to pesticides, resulting in poor control effect

Extensive use of pesticides can also easily cause pesticide residues in tea to exceed the standard, which cannot meet the export requirements of tea

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