In order to make full use of natural resources, in recent years, Libao Town of Hai'an County has selected high-efficiency planting patterns of potato, corn and Chinese cabbage, and achieved good economic and ecological benefits. The cultivation points are now introduced as follows.
Potato combined with deep-turning base fertilizer, using 1500-2000 kg of decomposed organic fertilizer per acre and 50 kg of 25% ternary compound fertilizer. The ground preparation is done, the width is 1.8 meters, the ditch inside and outside the field is opened, and the ditch is taken care of. Choose high-purity, purple-white and other varieties with good commercial properties, strong disease resistance, high quality and high yield. Choose seed potatoes without pests and buds, cut into pieces 15 to 20 days before sowing, and require 1 or 2 buds per block to cover the soil with small arch sheds. The planting is completed in the middle of January, and the cold winter season can be properly advanced. The warm winter season can be delayed. Five rows of potatoes were planted in the width of 1.2 m in the middle of the raft. The row spacing was 30 cm, the plant spacing was 20-25 cm, and about 9000 plants were planted per acre. The bud eyes were placed in the seeding hole. After sowing, the soil was sealed with 50% acetochlor EC 80 ml per acre before spraying, and then covered with a plastic film, covered with a small arch shed, covered with plastic film. Do not expose the membrane before emergence. When the shed temperature exceeds 25 °C after emergence, the film will pass through the small wind, and the shed temperature of the flowering and potato will be maintained at 18-20 °C. Depending on the growth of the seedlings, 500 kg of human and animal manure and 10 to 15 kg of urea were applied per mu of acre in the initial stage of planting, and artificial weeding was combined with fertilization. Pay attention to the prevention and treatment of early blight, late blight, mites, mites and mites. Batch harvesting began in late April.
At the beginning of February, corn was 30 cm on both sides of the potato broadcast, 1000 kg of fertilized organic fertilizer per mu, 20-25 kg of compound fertilizer, and corn was planted from late March to early April. Cm, the hole distance is 20 ~ 25 cm, 2 holes per hole, 2.5 to 3 kg per mu, the film is covered after sowing, and the seedlings are released in time after emergence. From the 5th leaf stage to the jointing stage, the stalk stalk joint fertilizer is applied, 500 kg of diluted manure water and 10 kg of urea are applied per acre; the panicle fertilizer is applied in the big trumpet period, 15-20 kg of BB fertilizer per acre and 10-15 kg of urea. The field water holding capacity during the growing period is maintained at 70% to 80%. Pay attention to the prevention of stem rot, Laodelphax striatellus, ticks, ticks and corn borers.
Chinese cabbage was sown in the middle and late August, and seeded for 1 to 2 days before sowing. The seeds were mixed with carbendazim. Choose a field with loose and fertile soil and well-drained fields to make a seedbed. Each mu of field needs 10 square meters of seedbed, and 30-40 grams of seeds are needed. 2 leaves 1 heart during seedling, weeding, no fertilization at the seedling stage, keep the soil dry and see wet. 4 to 5 leaf stage transplanting, seedling age 18 to 20 days. 25 to 30 days before planting, 1500-2000 kg of organic fertilizer per mu and 50 kg of compound fertilizer will be applied. After the preparation, the soil will be smashed and the width of the stalk will be 1.8 m. Planted from late August to mid-September, the row spacing is 45-50 cm. In the rosette period, 750-1000 kg of diluted manure water and 15-20 kg of urea are applied per acre; from 1000 to 1500 kg of animal manure per acre, and 20 to 25 kg of 40% compound fertilizer per acre, watering in time after fertilization. Combine weeding and cultivating 2 times before sealing. Pay attention to the prevention of downy mildew, soft rot, viral diseases, mites and Spodoptera litura. In the middle and late November, batches were collected and listed.
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