Prevention of potato diseases and insect pests
Potato diseases and insect pests are mainly late blight, early blight, virus disease, bacterial wilt and so on, insect pests: grub, small land tiger, mole cricket and so on. The prevention and control of diseases and insect pests must adhere to the policy of giving priority to prevention and comprehensive prevention and control, so as to minimize the losses caused by diseases and insect pests. Prevention methods: first, seed potato prevention: select low-generation species with high purity, no virus, no confusion and high uniformity, seed potatoes are evenly spread out and stored in cool, ventilated and dry places, and often checked to detect rotten potatoes and put an end to diseased potato sowing. The second is sowing prevention: strict knife disinfection when cutting potatoes to reduce the spread of bacteria, sowing with pesticides to prepare poisonous soil or mixed base fertilizer into the soil, can prevent underground pests and seed-borne germs. Third, field prevention: regular field inspection, timely detection of central diseased plants, the right medicine to the case. Sprinkle plant ash or lime when the seedlings are full to enhance the resistance of the plant.
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Small whole potatoes are good for sowing potatoes.
Planting autumn potato is an effective measure to resist drought and make up damage at present. Autumn potatoes are usually sown from mid-August to early September. As the seed potato produced in most of the seed potato producing areas in China is too large, the cutting method of potato sowing is commonly used in order to reduce the cost and save the amount of seeds. But in recent years, 20-50 grams of small.
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How to control the overgrowth of potatoes in greenhouse
Spraying 60-120 mg / L zhuangsu on the leaves of potato from bud stage to flowering stage (the concentration at bud stage is the lowest) can inhibit the growth of aboveground part of plant, increase yield and increase the proportion of large and medium potato. From budding stage to early flowering stage, dwarf-sturdy 2000-2500 mg / L was used.
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