Potato is a kind of bulk vegetable, which is mainly produced in summer. With the development of agricultural science and technology and the improvement of the level of vegetables grown by farmers, the anti-season cultivation of potatoes has been successfully achieved in large areas. This will not only increase the supply of winter vegetables, but also breed a large number of high-quality, non-degrading seed potatoes, thus solving the difficulties of seed retention in situ. The cultivation techniques are as follows: First, the selected fields should be selected for loose land, adequate water sources, and convenient land for irrigation. Pay attention to the rotation. Do not choose to plant seedlings that have previously been planted in Solanaceae crops. Otherwise, it is easy to carry out the crop, causing the seedlings to die and affecting yield. Second, choose a good variety As the potato back-season cultivation is experiencing high temperature and drought, easy to rotten seedlings, seedlings, late tuber temperature is low, lack of growth period, it should choose short dormancy period, early potato, strong anti-corrosion of early and middle maturity Variety is good. Third, germination seedling will be selected seed potatoes in 1PPM920 solution immersed for 10-15 minutes and then remove and dry, germination on the wet sand germination, sprouting 1-2 cm when planted in the field. Treatment of seed potatoes with 920 solution not only can produce early seedlings, but also has a high rate of emergence. It can increase the number of tuber and tuber in each plant and increase yield and quality. Fourth, timely planting in northern Jiangsu sowing in mid-September is appropriate, if sown early, susceptible to high temperature and illness; and sowing too late, vulnerable to freeze damage and reduce production. However, early maturing varieties can be pushed late, medium-maturing varieties can be earlier, sowing should be selected when sowing, cover grass after sowing, if it does not rain after sowing, watering, in case of heavy rain, timely drainage to prevent bad species, sowing depth It is better to sow 1.5-2 cm deeper than spring sowing. Fifth, strengthen the management of seedlings should be returned early after the emergence of seedlings, cultivator weeding, mu 5 kg of urea with water fertilization. Before cultivating, we then cultivating and weeding and weeding and cultivating 40 pieces of yam to make potato fertilizer, and then we should cultivate about 20 centimeters of soil to prevent the exposure of tubers. Pay attention to reasonable irrigation and timely watering in case of autumn drought. Spray 1000PPMB9 or 250PPM paclobutrazol respectively at the beginning and early flowering stages to inhibit the growth of stems and leaves. Also pay attention to pest control, can be 0.5% Bordeaux fluid or 500 times antibacterial special control. 6. It is advisable to harvest in time for harvesting in December, when the potato block has completely expanded. Generally, as long as the stems and leaves do not die, the plants are still growing and the tubers are still expanding. As early as frost, stems and leaves can be frosted several times, until the stems and leaves are completely dry after harvest; if the early frost, can wait for the stems and leaves after the dead.

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