Disease and pest prevention and treatment methods for greenhouse organic green tea in northern parts of China

Abstract

The invention discloses disease and pest prevention and treatment methods for greenhouse organic green tea in northern parts of China, and relates to the technical field of planting of green tea. Thedisease and pest prevention and treatment methods provided by the invention comprise a disease and pest prevention method and a disease and pest treatment method. The disease and pest prevention method comprises the following steps: adding a biological pesticide into water according to a volume ratio of 1:(40-50), and spraying an obtained solution to the organic green tea in a greenhouse every four days, wherein the biological pesticide is prepared from the following components by weight: 6 to 8 parts of a humulus scandens and camellia seed mixed fermentation broth, 1 to 3 parts of nanometer diatomite, 8 to 10 parts of a Chinese toon leaf water extract and 15 to 20 parts of water; and the disease and pest treatment method comprises the following steps: adding the biological pesticide intowater according to a volume ratio of 1:(15-18), spraying an obtained solution to the organic green tea in the greenhouse, then bagging four tea trees as a group with a plastic bag, carrying out tightbinding, introducing 10 to 15 mL of low-temperature nitrogen into the plastic bag, wherein the temperature of the low-temperature nitrogen is 0 to 2 DEG C, then carrying out maintaining for 3.5 to 4 hours, and opening the plastic bag. The disease and pest prevention and treatment methods provided by the invention can greatly reduce the incidence rate of diseases and pests of tea leaves.

Description

technical field [0001] The invention belongs to the technical field of green tea planting, and in particular relates to a method for preventing and controlling organic green tea pests and diseases in northern greenhouses. Background technique [0002] Green tea refers to the color and luster of the finished product after taking new leaves of tea leaves without fermentation, after typical processes such as fixing, rolling, and drying. After brewing, the tea soup retains the green main tone of fresh tea leaves. Cancer and lower blood fat, anti-computer radiation, smokers can reduce the harm of nicotine. [0003] Planting tea leaves from the south to the north, where there is plenty of sunshine, can meet the needs of tea leaves for sunlight. At the same time, it has the advantage of an open plain area, which is convenient for large-scale picking of tea. However, in summer and autumn, there are many pests on tea trees. Most of the treatment methods use chemical pesticides for t...

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Problems solved by technology

[0003] Planting tea leaves from the south to the north, where there is plenty of sunshine, can meet the needs of tea leaves for sunlight. At the same time, it has the advantage of an open plain area, which is convenient for large-scale picking of tea. However, in summer and autumn, there are many pests on tea trees. Most of the treatment methods use chemical pesticides for treatment, but chemical pesticides will remain on the surface of tea, which greatly threatens the health and safety of drinking tea. How to prevent and control tea plant diseases and insect pests in a green way is a technical problem to be solved

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