Control of diseases and insect pests of Schisandra chinensis
The main results are as follows: (1) the leaf blight starts from the leaf tip or edge in the early stage, infects the whole leaf surface, makes it withered, yellow and shedding, and the ear falls off in severe cases.
Prevention and control methods: strengthen field management, pay attention to ventilation and light transmission. At the initial stage of the disease, the patients were sprayed with 100-fold Bordeaux solution, once every 7 days, several times in succession.
(2) the leaf curler larvae are harmful, causing curling leaves, affecting the growth of fruit, and even shedding.
Control method: spray with 50% phoxim 1500 times or 50% phoxim 1500 times or 40% dimethoate 1000 times or 80% trichlorfon 1500 times.
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Control of various diseases and insect pests of Schisandra chinensis
(1) powdery mildew and black spot are two common diseases of Schisandra chinensis, which usually occur in the first ten days of June. Prevention and treatment methods: the initial period of the two diseases is similar, spray once in late May, 1 hundred times Bordeaux liquid to prevent, if there is no disease, spray once every 10 days. For the prevention and control of powdery mildew, 0.3 li 0.5 degree stone sulfur mixture or powder, methyl topiramate wettable powder 800 times solution; black spot 50% mancozeb 50% wettable powder 600 rain 800 times solution. If both diseases are present
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Identification and control of diseases and insect pests of Schisandra chinensis
Disease 1, leaf blight 1. Symptoms. Caused by the infection of Schisandra chinensis leaf blight pathogen, it is a common disease. It is easy to occur when it is hot, rainy and unventilated from late May to early August. First from the leaf tip or leaf edge to start the disease, the emergence of dark brown spots, gradually expand downward to spread to the whole leaf, and finally make the whole leaf become dark brown dry and fall off. Then the fruit shrinks and becomes the early fruit drop. two。 Prevention and treatment. One is to choose a well-ventilated plot. The second is to strengthen field management and prune reasonably to avoid branches and leaves.
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