Preventing and treating method of tomato yellow leaf curl virus

Abstract

The invention discloses a preventing and treating method of the tomato yellow leaf curl virus. Tomatoes are cultured in a solar greenhouse according to size, wherein the large line spacing is 80 cm, and the small line spacing is 60 cm; gathering inducing plants are transplanted 15-20 days before tomatoes are planted, wherein a line of gathering inducing plants are planted between two lines of planted tomatoes, and the row spacing is 25 cm; substrate seedling trays containing carbonized rice husks are adopted for culturing seedlings of the gathering inducing plants, carbonized rice husks are additionally applied in planting pits, and seedling tray dipping and root irrigating are conducted through liquid thiamethoxam; before the gathering inducing plants are transplanted, a vent hole of thesolar greenhouse is closed by a 40-mesh sophocarpidine pest-killing protection net. On the premise of greatly reducing the chemical pesticide consumption and achieving main crop non-contact chemical prevention and treatment, the morbidity of the tomato yellow leaf curl virus can be effectively reduced, and the morbidity of the tomato yellow leaf curl virus of the infected tomato species can generally be controlled to be 4% or lower.

Description

technical field [0001] The invention relates to a method for preventing and controlling tomato diseases, especially a method for preventing and controlling tomato yellow leaf curl virus disease which can reduce the use of chemical pesticides and realize non-contact chemical control of main crops, and is especially suitable for the autumn delayed tomato cultivation in solar greenhouses. It belongs to the technical field of plant protection. Background technique [0002] Tomato yellow leaf curl virus disease is a fulminant and devastating disease. The affected fields generally reduce yield by 20%-30%, and in severe cases, even fail. Tomato yellow leaf curl virus (Tomato yellow leaf curl virus, TYLCV) belongs to the Begomovirus genus (Begomovirus) of the Geminiviridae family, because this virus can only be infected by whitefly (Bemisia tabaci) under natural conditions. Transmitting in a persistent manner, also known as whitefly-borne twin virus, is a class of plant DNA viruses...

AI Technical Summary

Problems solved by technology

[0003] At present, the production still mainly relies on the chemical control of the vector insect Bemisia tabaci to realize the prevention and control of yellow leaf curl virus disease, which leads to the unreasonable use or even abuse of chemical insecticides, which in turn leads to pest resistance, Problems such as pesticide pollution and residues seriously threaten the safety and ecological security of agricultural products, as well as major social and economic issues such as the export of agricultural products

[0004] At the same time, it is difficult for ordinary insect nets with good ventilation effect to prevent Bemisia tabaci from entering and leaving the greenhouse.

The use of 60-mesh insect-proof net seriously affects the ventilation effect of the greenhouse. The ventilation speed is slow and the cooling speed of the greenhouse is slow, which affects the growth of tomatoes and aggravates the occurrence of viral diseases. Lice come in and out of the greenhouse, the effect of isolating bemisia tabaci cannot be achieved