First, selection of fine varieties and selection of good varieties is an important part of high-yield cultivation of potatoes.
Second, cuttings germination 20 days before sowing, the time started about the beginning of March germination. When potatoes are cut, they have at least one eye in each piece. 10-15 blocks / kg is appropriate. After cutting, water soaking seeds shall be sterilized with 1:200 times of small gray dry mix or carbendazim powder. After the seeds are dried, the seedbed germination begins. There are two methods: one is to use sand to germinate at a room temperature above 15°C, one layer of sand and one layer of seed; the other is to dig in the direction of outdoor ventilation and sunrise. Pit germination, pit depth of 25 cm or so, a layer of sand and a kind of block, 3 layers is appropriate, and then cover the film covered with a shed, at night covered straw insulation. The above two methods should be sprayed 1-2 times during germination to prevent it from drying out. When the shoots grow to 0.5-1.0 cm in length, sowing begins.
Third, the election of the entire underground species to see the land before the public sentiment, if the situation is not good, can be considered irrigation ditch ostracism, during the ancestral period should be 7-10 days before the next species. Potato planting is generally planted in double ditch. When the ditch is opened, large rows of 50 cm and small rows of 40 cm can be used. The expansion of potato stems requires the loosening of fertile soil.
Fourth, sowing cover film sowing, planting blocks into the ditch in two ways: First, bud down, this method grows potatoes root long strong, potatoes less but large, but the seedlings are late 2-3 The other way is to shoot buds upwards. The potato roots grown by this method are relatively short, the potatoes are small but many, and the seedlings are 2-3 days earlier. After the end of the next species, the earth was taken from both sides of the large row to cover the space of the potato ditch and the small row, and the micro-membrane cover was tightly compacted.
V. Seedling emergence and clearing after seedling management, about 20 days after sowing, that is, there are seedlings exposed soil, this time can be Chong Miao at the micro-film smash break the air, to prevent steamed seedlings. When the seedlings grow to 10 cm in height, the membranes around the seedlings should be tightly packed with soil to keep the water pressed. The early stage of potato growth should not be watered. If it is rain-free, it can be watered once every 10 days, and it can be matured by pouring 2-3 times of water, and watering can be stopped 10 days before harvest. Seedlings such as locusts or thrips.
Six, scientific fertilization potatoes in the whole growing period of fertilization should master the principle of "pre-attack, security, control tail", when the seedlings unearthed 80% when the re-application of a quick-effective Miao Fei, in the potato seedling stage began to spray fruit shuang Ti Ling The underground fruit nutrient transportation conduit is thickened, the fruit enlargement vitality is increased, the fruit surface is smooth, the fruit type is robust, and the quality and the yield are high. Potatoes prefer to use farmyard fertilizers, with an appropriate dose of 4000-5000 pounds per acre. Appropriate application of chemical fertilizers requires the use of nitrogen, phosphorus and potassium. Potatoes require large amounts of potassium, and the ratio of scientifically reasonable N, P and K fertilization is 1.85:1:2.1. Potatoes like to absorb ammonium nitrogen and absorb more sulfur.
VII. Pest Control Potatoes have late blight, downy mildew, and bacterial wilt in the middle and late stages of the disease. In the early stage of the disease, they were treated with forskolin 500 times liquid plus a new high fat film on a sunny day. To deal with the disease, the whole plant must be removed by centralized incineration, and lime should be applied to the surrounding area and around the diseased area or sterilized with a 0.5% formalin solution and then sprayed with agricultural streptomycin 2000 times solution plus a new high fat film for prevention and treatment. Prevent the spread of diseases.
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