Winter potato late field tube views

1. Chemically regulated "deep ridge, high ridge, and full mulching" cultivation techniques have a high nitrogen content and are vigorously growing at seedling stage. Paclobutrazol can effectively control the growth of stems and leaves, promote the timely transfer of photosynthetic products to tubers, and increase yield. Generally in the bud to the initial flowering period, 50% paclobutrazol per mu 50 kg watering spray 2 times. To increase the amount of vegetative growth on the ground to promote the normal growth of potato. 2, drought relief. Potato tubers are hypertrophic stalks and the body is full of stomata. It is necessary to create a good soil environment to facilitate tuber enlargement. The peak period of potato potato (after 10 days of budding) increased the daily output by more than 100 kilograms per acre. Drought would seriously affect tuber enlargement, and waterlogging could easily cause rot and dead roots, or cause tuber rot. Therefore, in times of drought, it is necessary to timely fill the water and perform light irrigation. In heavy rain days, it is necessary to prevent the accumulation of water in the fields. 3, foliar spray fertilizer. In the middle and later stages, it is necessary to do a good 2-3 times of foliar spraying, which can increase production by about 20%. 4, control of pests and diseases. The main disease of potato in Guangshui City is late blight. During the growth period, the daily average temperature of 10-25 degrees Celsius, rain or air humidity over 90% for more than 8 hours appears 3-4 days after spraying 70% mancozeb for prevention . When a central diseased plant was found in the field, it was sprayed with metalaxyl manganese zinc once every 7 days for 3 consecutive times, or 68.75% silver failid was used in the initial stage of the disease. 5, timely harvest. According to growth conditions and market demand timely harvest. Mechanical harvesting or manual excavation can be used for harvesting, but tuber damage should be prevented. At the same time, the tubers should be protected from sun exposure, rain, and turn green under long-term exposure to sunlight. The product should be loaded and unloaded lightly. Do not make a lot of bruises or bumps on the peel.

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