Tea farmers make skillful arrangements for farming in August
August, the climate is hot, conducive to the occurrence of diseases and insect pests. At present, the key points of tea farming are the prevention and rescue of drought and heat damage and the prevention and control of diseases and insect pests.
The defense and rescue of drought and heat damage Under the attack of high temperature and drought, tea plants will appear scorched spots, scorched leaves, terminal buds, tender stems and other drought and heat damage symptoms after about 8 to 10 days, especially in young tea gardens. Defensive measures: First, timely ploughing and hoeing. Weeding in time can reduce evaporation of topsoil moisture, which is an effective measure to prevent drought. Production practice has proved that before the beginning of hot weather, if there is a possibility of drought, it should take advantage of the rain after the day turns good, immediately weeding loose soil, avoid in the dry period, causing tea trees (especially young) suddenly exposed to death. The second is grass. Tea trees are lined with grass to lower the ground temperature and keep the soil moist. Storing water and controlling weeds are good ways to prevent drought and keep water. Rescue measures: For tea trees that have been affected by drought and heat, they should be actively rescued. For example, the dead branches and leaves of the affected tea trees shall be pruned to different degrees according to the damage situation after the drought disappears. To restore the vitality of tea plants, quick-acting nitrogen and potassium fertilizers should be applied timely to cultivate autumn shoots.
At present, the main pests are the fourth generation of tea geometrid, green leafhopper (the second peak), tea orange gall mite, tea cloud leaf blight and tea anthracnose. Reference control chemicals and dosage are as follows: tea geometrid fourth generation: kung fu 20~25ml/mu; enemy kill 20~25ml/mu; saidan 60ml/mu;bt preparation 600~1000 times.
Green leafhopper (second peak): 25% buprofezin 30g/mu;10% imidacloprid 15g/mu.
Tea cloud leaf blight: 75% chlorothalonil 75~100g/mu;50% carbendazim, 50% topzin 75~100g/mu.
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Identification and control of tea whitefly whitefly
Black whitefly, also known as orange whitefly, belongs to the family Homoptera, which can damage tea, citrus, grapefruit, Camellia oleifera and other plants. The larvae settled on the back of the leaves to suck juice and excreted "honeydew", which led to the occurrence of bituminous disease, hindered photosynthesis, decreased tree potential, sparse buds and even dried up branches and leaves. The adult worm is 1.35 mm long. Except for the orange belly, it has purple-brown body wings, seven white spots around the forewings, light brown rear wings, no spots, thin white wax powder on the body surface and red eyes. The egg is shaped like a banana.
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Planting techniques of Baiya Qilan Tea
Tea tree is a perennial crop, and the construction of a new tea garden is the basis of tea production. As long as it is planted well, long-term economic benefits can be obtained. Therefore, we must seriously pay attention to the quality, start from the basic work, seriously select the land and open the garden, in order to achieve the goal of long-term high yield and high quality. The growth and development of Baiya Qilan is an entity with the external environment. The quality of the garden is closely related to its quality. Therefore, when selecting the garden, we should focus on whether the climate, soil, water quality, topography and other conditions are suitable for cultivation, according to the characteristics of Baiya Qilan tea.
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