Cultivation of powdery mildew should be well done in the early autumn. Powdery mildew is a disease that can occur in the whole growth period. It produces white round mildew spots on the leaves or leaves. It begins to grow from the lower leaves and gradually develops upwards. There will be a layer of white mold on the leaf surface after severe infection, and the white mold layer in the susceptible part of the disease will appear gray-brown and the leaves will be yellow and necrotic. The disease is sudden and strong, and it is difficult to prevent it. It is necessary to strengthen prevention. Chemical control can be used for 2500-3000 times of the world's high-water dispersible granules, 500% of 20% of rice water agent and 600 times of 70% of the product's dry suspension agent. liquid.

Mid-Autumn Festival postponed the greenhouses to prevent downy mildew and whitefly. Downy mildew is also a disease that can be infected during the whole growth period. The lesions are limited by veins and are mostly polygonal brown or yellow-brown patches. When the humidity is high, the gray back moldy layer grows on the back of the leaves, and it quickly dries after forming large patches. Chemical control can be used to prevent and treat 1500 times of Amisidae, 600 times of Jinlei, and 600 times of Kangkangling. Whitefly can be used 25% Aktai water dispersible granules 2000 ~ 5000 times liquid, bufalin wettable powder 800 ~ 1000 times liquid and Uranus EC 4000 times mixed.

After the late autumn, greenhouses should be well protected against tea scutellariae, and the tea plants should be sucked and sucked by the young planting sites of the young plants. The leaves of the affected plants should be narrowed, shrunken or distorted, and the young stems should stand stiff. Chemicals can be used to control 1.8% abamectin 2000 ~ 3000 times, 20% Bufo Concentrate 1500 times, or Uranus EC 3000 times and so on.

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