July cucumber management technology

Some of the exposed cucumbers were prone to viral diseases in July, which were caused by three viruses: cucumber mosaic virus (CMV), melon mosaic virus (MMV) and tobacco mosaic virus (TMV). In the process of cucumber growth, mixing often occurs. Generally from the upper part of the tender leaves, there are some flowers, some appear dark green uplift wrinkles, uneven, and some produce fern leaves, lobes, early onset, plant dwarfism or wilting.

Prevention and control should adopt the comprehensive prevention and treatment measures selected for planting resistant varieties or disease-resistant varieties, supplemented by cultivation and disease prevention. First of all, we must cultivate strong seedlings and apply more phosphorus and potassium fertilizers to increase the disease resistance of the plants. Secondly, we must pay attention to the hygiene of the field, and wash the hands with soap in time after touching the bacteria. Pay particular attention to the control of locusts, especially in the seedling stage to control aphids. When aphids occur in the field, they can be killed by imidacloprid, acetamiprid, and avermectin. In the early stage of viral disease, 20% of virus A wettable powder 500 times or 20% of virus wettable powder 600 times can be sprayed. Others such as plant growth booster fluofloxacin (norfloxacin) have better inhibitory effects. Plants with viral diseases generally have the ability to grow diseased. Spraying growth regulators that significantly promote plant growth can allow crops to continue to bloom even when disease is present.

If the onset is severe, it is recommended to use the following compounding agent spray: 0.16% anti-sick Wei (virus K) + 0.16% virus will be grams (other agents can also passivate the virus) + medical norfloxacin, virus Ling (per kilogram of water Add 1 tablet) + 0.16% zinc sulfate + natural cloudworm (Jinyunda-120) or naphthaleneacetic acid 5 mg/l. The first spray can be heavy, and after 1-2 times in succession, it can be sprayed as usual. According to the above ratio, the commercial drug quantity to be added to each sprayer (water 15 kg) is: 25 mg of anti-disease, 25 g of virus, 25 tablets of morpholine, 30 g of zinc sulfate, Natural cloud alfalfa 1.5 grams.

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