The technology is expected to have a total area of ​​600 million mu in the province. A large area with an average yield of 160 kilograms, high-yielding fields up to 200 kilograms per mu, and a mass production of 250 kilograms of fields. Mu festivals increase efficiency by 60 yuan.
Appropriate to promote the region: suitable for application in the province's rice production areas.
Technical points:
First, carefully select improved varieties. According to the main rapeseed varieties announced by the Provincial Department of Agriculture, according to the local conditions, we select the hybrid rape varieties with high quality, strong resistance, moderate growth period, good seed quality, and high yield. Sanxian district is suitable for the application of double-low rapeseed varieties with early growth period and late sowing (planting).
Second, standard preparation field blocks. For the first time, the rice remains less than 5 inches, and the pull rope is used for ditching. The width of the car is 120 cm, the width of the ditch is 30 cm, and the depth is 20 cm. Waist sulcus and gutters are slightly widened and deepened so that they can be matched with three ditch. The ditching machine is used to open the ditch, and the ditching earth evenly covers the car surface, where the uneven coverage is slightly flattened by hand.
Third, the scientific deployment of fertilizers. In the fertilizer, phosphorus, potassium and boron fertilizers were used as base fertilizers at one time, and nitrogen fertilizers were applied at the ratio of 5 to 3 and 2 at the bottom. Generally medium-fertilizer fields use 40 kg of rapeseed formula and 1 kg of borax or 200 g of boron as base fertilizer. Before and after the winter solstice, topdressing about 10 kg of compound fertilizer, see seedlings plus 2 ~ 3 kg of urea. After the spring budding stage, topdressing 3 to 5 kg of urea and spraying 50 g of Sorbor Boron. One kilogram of potassium dihydrogen phosphate or overdose of oil, such as foliar fertilizer, is used to promote the development of pods within one week after the final flowering.
Fourth, timely sowing transplanting. The best time for rapeseed sowing is from mid-late September to mid-to-late October. It can also be advanced to mid-September and postponed to the end of October. Generally, the sowing rate of the mu is controlled at 200-300 grams, and the sowing amount of the field with early sowing and good fertility may be less, and the field with late sowing and poor fertility may appropriately increase the sowing amount. When the rape grows to 5 leaves, the seedlings are set. When the seedlings are set, the seedlings are recommended to be transplanted to other fields or where the seedlings are not neat, and the extra seedlings are taken out of the fields for vegetables or poultry and livestock feed. Transplanting starts from the beginning of October and can continue until mid-November.
Fifth, a reasonable planting density. Rape seedlings began to sprout at the 3rd leaf stage, with the exception of nest pile seedlings, C weak seedlings, seedlings are not squeezed seedlings is appropriate; 5 leaf stage Dingmiao, will be completed once Miao Shi raise Miao Fei. Determine the planting density according to the area of ​​land. Generally, 8000 to 10,000 trees are planted in the field with good fertility and fertility, that is, 12 to 15 plants per square meter, and 10,000 to 12,000 plants are planted in the field with late planting and poor fertility. That is, 15 to 18 seedlings per square meter are reserved, and 15,000 to 20,000 seedlings are planted in special plots, ie 22 to 28 seedlings per square meter, generally not exceeding 20,000. Transplanting density is generally 6,000 to 8000 plants, which is 10 to 12 plants per square meter. Seedlings, transplanting early are slightly dilute, seedlings are small, transplanting late is slightly dense.
Sixth, implement chemical weeding. In the first 5 to 7 days before the site preparation, grab a herbicide for weeding on broad-leaved weeds in the sunny afternoon and weeding was applied within 24 hours. Rapeseed seedlings grow to the 3-leaf stage, and most of the grass weeds germinate and grow out of soil. Weeding herbicides (herb field herbicides) are used to spray off weeds.
Seven, pay attention to pest control. The seedling stage is mainly to prevent and control cabbage caterpillars and aphids. According to pest and disease forecast, we should master the prevention and control standards and implement it in time. In the flowering period, we must use 40% of the sclerotial net to control sclerotial sclerotia once in the early flowering period and spray the middle and lower leaves of rape from the bottom up. The leaves dripping should be suitable. The flowering period is based on the forecast. Look at the situation and control it again.
Eight, timely harvest and sale. When more than 80% of rapeseed plants are in pod color and the upper pods have not completely yellowed, they begin to be harvested. After stacking or spreading in 5 to 7 days, the grains are promptly threshed and dried. Actively try mechanical harvesting, generally postponed 5-7 days for one-time harvest. Actively concerned about market conditions, timely release, avoid long-term stacking, not only affect the quality of rapeseed, but also may delay the timing of the sale.
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