Tea trees are continuously picked, and a large amount of nutrients in the body are consumed. When the heat is high in summer, the soil is compacted, weeds are piled up, the soil strength is reduced, and insect pests are repeated, seriously affecting its normal growth. In order to restore the tree vigor and vitality at the time of discomfort, the management of tea gardens should be effectively strengthened. The following tasks should be done:
First, the depth of ripper in the weeding ripping tea plantation is generally 10 cm in the dripping line of the tea tree canopy and 20 cm outside the dripping line. At the same time, stones, weeds and grass weeds must be excavated to break up the clods and loosen the soil. , To make it ventilated and permeable, to increase the ability to accumulate and supply fertilizer and water, thereby accelerating the maturation of the soil, forming a soft and thick layer of cultivation, in order to promote the early growth of tea trees.
Second, timely fertilization combined with the tea plantation weeding loose soil, in the outer edge of the tea tree canopy water line, digging a small 13 cm deep ditch, fertilizer deep, pay attention to fertilizer immediately after the application of sealed soil. The amount of topdressing fertilizer applied in summer can be calculated according to the pure fertilizer content of the chemical fertilizer used, that is, the ratio of N(nitrogen):P(phosphorus):K(potassium)=4:3:2, that is to say Generally, 15 kg of urea per mu, 11.25 kg of superphosphate or calcium magnesium, and 7.5 kg of potassium chloride are used.
Third, the pruning of the summer tea tree crown focus is to ensure that the crown on the round head (buntoutou) under the premise of cutting chicken claws, too dense branches, leggy branches, cluster branches, wither branches, pests and branches, etc. Promote long lateral branches and new leaves of the crown, and make the crowns airy and transparent, so that the leaves can produce more nutrients—carbohydrates—to achieve high yields. The length of trimming is: lateral branches 1-2 cm, trunk and main branches 2-3 cm. It should be noted that the pruned branches and leaves must be far away from the tea plantation and burned in order to prevent the spread of pests and diseases.
Fourth, the prevention and control of pests and diseases In summer tea disease prevention and control focus is tea cake disease and tea bud blight, pest prevention and control is the focus of tea feet and tea caterpillars. Tea cake disease is mainly harmful to the shoots and leaves of tea trees. The lesions are recessed on the front of the leaves. The back of the tea cakes is bunting and produces grayish-white spores. If tea leaves are made from diseased leaves, they are fragile and bitter. Control methods: Spray with 0.2-0.5% copper sulfate solution and spray once every 7 days. The tea bud blight disease is more serious in the young shoots of summer tea. The diseased leaves are distorted, irregularly shaped, and scorch-like. The lesions are black or dark brown and lose valuable tea. Prevention methods: 70% thiophanate-methyl 75-10 grams per acre, plus 1500 times water, diluted spray, spray once every 7 days. Tea worms and tea caterpillar larvae feed their young shoots and leaves, and they can eat large leaves. Control methods: Use 90% wettable powder of dipterex 100-150 grams per acre, 1000 times of clean water, spray after dilution, spray once every 5-7 days.
The Fluorine-Containing Benzoic Acid series is very common form of the fluorochemical compounds, it has many product types and derivatives. Most of products are in white crystalline powder, some of products are Colorless monoclinic prismatic crystals. It was widely used as fungicide intermediates, also used in the etching process. The Fluorine-Containing Benzoic Acid series are mostly in high value-added , less polluting products. We are trying our best to make our production dock with market to give accurate and effective services for the market .
Fluorine-Containing Benzoic Acid
Containing Benzoic Acid,2,3-Difluorobenzoic Acid,Methoxybenzoic Acid
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