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1. The choice of site and site preparation is in accordance with the requirements of the state's production environment for non-environmental pollution-prone agricultural products, with deep soil, well-drained, loose and fertile slightly acidic sandy loam. Deep plowing 25 cm to 30 cm before sowing, and fine soil preparation. The bottom soil should be poured 1 week before sowing of dry soil.
2. Reapply basal fertilizer to 1500 kg to 2000 kg per 667 m2 of composted organic fertilizer, 100 kg of plant ash or 15 kg of potassium sulphate (supplemental to potassium chloride).
3. Seed disinfection before sowing with 70% thiophanate-methyl 800 times or 50% carbendazim 500-fold liquid for 15 minutes to 20 minutes. Seed cuttings of 30 to 40 grams each, with one or two buds is appropriate. After slicing, cool dry grass and mix ash to promote wound healing.
4. Seedlings were planted in open field and planted before and after the beginning of spring. In low altitude areas, cultivating with mulch can be planted in early and late December. Line spacing 60 cm, spacing 26 cm to 28 cm, 4000 to 5000 plants per 667 square meters.
5. When weeding and weeding seedlings are about 20 cm high, combined with cultivating and weeding, 667 kg of biogas fertilizer or 750 kg to 1,000 kg of human excrement or 10 kg of urea plus 15 kg of potassium sulfate per 667 m2 will be cultivated.
6. Disease prevention and control of virus-free potato Planting in the year is generally free of serious pest and disease hazards. If potato late blight and bacterial wilt disease occur locally, and pests and diseases such as ground tigers, badgers and cockroaches are harmed, they should be controlled by pesticides. Disease prevention is mainly prevention. In the premise of correct disinfection, it is used in the early stage of growth. Late blight can be sprayed once or twice with 58% metalaxyl•manganese 500 times solution; bacterial wilt can be prevented by 72% agro streptomycin 2000 times. For ground pests such as small tigers, crickets and crickets, when they are used for soil preparation, every kilogram of ground trichlorfon crystallizes between 1.5kg and 2.0kg of trichlorfon and 10kg of glutinous rice or rice bran.
7. Growth regulators in the late growth stage, such as excessive nitrogen application, appear prosperous, should be 15% paclobutrazol per 667 square meters budding period of 40 grams to 50 grams of water 60 kg to 75 kg uniform spray 1, control the seedlings Grow, promote underground tuber enlargement.
Non-pollution Cultivation Techniques of "Atlantic" Potato
The "Atlantic" potato is a hybrid processed potato variety imported from the United States by the State Department of Agriculture and the Chinese Academy of Agricultural Sciences. The virus-free seed is now successfully selected by the Hunan Agricultural University and the Hunan Potato Engineering Center. In the spring of 2006, the County Bureau of Agriculture introduced the processing-type virus-free potato “Atlantic Ocean†from Yiyang Asia-Pacific Potato Industry Co., Ltd. and conducted a pollution-free cultivation demonstration in a high mountain area with an altitude of 800 meters. The cultivated area was 1.33 hectares, February 15-18. Sowing, harvested on May 25, about 100 days of the whole growing period. After the test production, 1,690 kilograms of fresh potatoes per 667 square meters, an increase of 38% over the local potato varieties; fresh potatoes can be processed into 15 kilograms of starch per 100 kilograms, calculated at 16 yuan per kilogram of starch, the output value per 667 square meters of 4056 yuan The benefits are considerable. The variety has good appearance quality and starch content as high as 15%~17.9%, which is very popular among consumers. Its cultivation techniques are as follows: