How to control tea spiny whitefly?
How to control tea spiny whitefly? Please guide tea black whitefly to do obvious harm to tea buds and leaves. Generally, the nymphs of whitefly are found in the leaves of tea garden. most tea farmers do not know the adults of whitefly, and the intake of a large number of adults directly affects the quality and yield of tea production. Tea black whitefly adult Eclosion peak, Qingliu County in late April to early May egg hatching period is the key period of control, this period is the spring tea harvest time, the use of pesticides must be strictly controlled. Positive and effective comprehensive measures should be taken to prevent the outbreak of tea spiny whitefly. 1. if the tea garden near the harvest is not sprayed temporarily, the harvest speed of spring tea should be accelerated and the loss caused by adults should be reduced. 2, spraying can be organized immediately after the tea garden with a large number of insects is harvested, and low-toxic pesticides such as imidacloprid, thiazine and imidacloprid are selected and used continuously for 2 times every 5 to 7 days. 3. In the tea garden with a large number of insects, do not rush to spray after harvest, but should be sprayed in the hatching period of black whitefly eggs in the first ten days of May. Spraying for 2 or 3 times every 5-7 days can control the occurrence and damage of whitefly more effectively. Click to get more tea planting techniques click to get more flower planting techniques
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What are the ingredients of tea?
What are the ingredients of tea? Please introduce that tea has the following ingredients: catechin: commonly known as' tea tannin', is a unique ingredient of tea, with bitter, astringent and astringent taste. Caffeine: it has a bitter taste and is an important ingredient in the taste of tea. Minerals: tea is rich in potassium, calcium, magnesium, manganese and other 11 kinds of minerals. Tea.
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What are the diseases in the root of tea?
What are the diseases in the root of tea? Please point out that there are the following diseases in tea roots: 1, tea seedling white silk disease 1, 1 distribution and symptoms: tea seedling white silk disease is a common nursery root disease. The distribution is wide and the harm is serious. In addition to tea, it can also harm more than 200 kinds of plants, such as melons, Solanaceae, hemp, tobacco, peanuts, etc.
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