How to prevent tea pests and diseases
Tea green leafhopper Intercropping sweet-scented osmanthus or planting street trees, etc. Weeds are stored in gardens in autumn and winter to provide overwintering shelter sites for arachnids and dragonflies to enhance ecological control potential. During the peak period of insect population, timely and batch processing was conducted to remove weeds from tea rows. For the plots that meet the control criteria, the following agents can be sprayed: Tea saponin aqueous solution, Thiamin chlorofluorocarbon microcapsule suspension-suspending agent, indoxacarb EC, azadirachtin solution, matrine and alkaloid solution , Insecticide nitrile suspension, zopromide suspension, azithrazine water dispersible granules. Tea feet Protect and utilize important natural enemies, such as tea-footed tick beetle, white-billed beetle beetle, and spider, and avoid the use of chemical pesticides during the peak period of E. urticae emergence. Combined with the cultivating and fertilizing in the tea plantation in the autumn, the insects in the topsoil are removed, and the chicken worms are released. The larvae have obvious occurrence centers before the third instar and can be killed manually. The insecticidal lamp was installed in the tea-foot tea plantation, and the light was turned on to trap and kill the adults. In the initial period of the tea scale insect adult, 3 to 5 sets of tea pheromone sex pheromone traps are placed per acre, and a large number of male adult worms are trapped and killed, and the contiguous use effect is better. When the effect of other prevention and control measures is not obvious, priority will be given to the use of plant-derived pesticides and biological pesticides. The use of chemical pesticides will be reduced as much as possible. The larvae will be controlled using tea locust virus preparations. The appropriate control period will be 1 to 2 years old. Leaf layers are evenly sprayed on the front and back to give full play to the virus. The agents can be used: Tea Su Yunjin, matrine, Thiamethacin, deltamethrin, diphenoxylate and so on. Tea orange soup In batches, diligently pick up parts of adult quail, eggs, cubs, and Ruoqiang. At the end of autumn, the park was covered with lime sulfur and mineral oil. Artificially released predator lice to control tea orange borer and other pests and small pests. In the early stage of the occurrence of tea orange alfalfa (early May, late August to early September), the mineral oil was uniformly sprayed on the young leaf layer damaged by the tea orange pod by the use concentration of 150-200 times, and was controlled. Ocher horse At the peak of the larval population, the ground was dug in batches at the appropriate time, worsening its nutritional conditions and shelter sites and taking away some eggs, nymphs and adults. The pheromone + blue or pheromone + yellow-green trap plates are used to trap the adult. In combination with the prevention and cure of tea green leafhoppers, or with reference to the chemical control of tea leafhoppers. Tea cake disease In the newly planted tea plantation, resistant healthy seedlings were selected. Clear dead branches, improve the ventilation and light transmission of tea gardens, clear the ditch and drain water in low-lying tea gardens; timely and batch-practice, combine with the transformation of tea gardens, select pruning and sassafras at suitable periods to remove diseased leaves, and avoid the onset of new shoots During the boom, reduce the chance of infection. Increase phosphorus and potash fertilizers to enhance tea plant disease resistance. In the more serious disease-causing tea gardens in the past years, polymycin was sprayed to prevent the disease. If the disease is severe, it should be sprayed again 10 to 15 days later. Tea anthrax In the newly planted tea plantation, resistant healthy seedlings were selected. Balanced fertilization to improve tea disease resistance, timely cutting disease branches. Timely picking. For retransmission tea gardens, difenoconazole, pyraclostrobin, etc. can be used for control.
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