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Rape live attention six defense
Anti-seed so late If sowing is too late, it is easy to miss the favorable opportunity for high temperatures in early winter, which is not conducive to seedling rapeseed. According to the pre-harvest period, select the appropriate variety of rapeseed growth period. For example, middle hybrid rice field and first season late rice can be selected as “double low†hybrid rapeseed such as Zhongyou No.6, Xiangza oil No.3 and Xiangza oil No.5, and sowed before September 25; Number 15, sown before October 25. After the rice is harvested, it must grab the season sowing in time. Anti-emergence of dew seed Seeds in the bare field can not absorb enough water to germinate, even if the roots are easy to lay, so it is best to use drilling and hole sowing. If sowing is used, special attention should be paid to preventing dew seeds. After the rice is harvested, the basal fertilizer is quickly applied. In accordance with the width of 1.5 meters or so, the narrow compartment is not only conducive to drainage, but also to ensure that there is enough soil to cover the surface of the car, which is beneficial to preventing dew-seeds. The ditch is 20 cm wide and 20 to 25 cm deep. At the same time, open the main ditch and the ditch. Remove the gully on the surface of the car, and pulverize it evenly. The hole sowing and drilling are 30 to 35 cm apart, and the hole sowing distance is 25 cm to ensure 6500 to 8000 feet per mu. Drilling seed size 250-300 grams per acre, hole sowing 4 to 5 tablets per hole, sowing is required to split over the scales, sowing seeds. After sowing, cover the soil with light, so that the seeds into the soil gap, to prevent the emergence of seed, is conducive to seed moisturizing germination. Drought-proof Soil drought, seed sowing can not absorb enough water, will delay the emergence period, and cause seedlings are not neat, low emergence rate. When dry weather occurs during sowing, the water can be properly irrigated to the hard floor surface of the car so that the sloping layer of the car is wet, and flood irrigation should be avoided. After the soil is moistened, drain it immediately to promote seed emergence. Preventing weed damage on the second day after sowing, 50% acetochlor EC 100 ml water 25 to 30 kg, or 50% Da Huili wettable powder 100 to 150 g water 50 kg, evenly sprayed on the soil Table; Mu with 10.8% efficient cover grass can EC 25 ~ 35 ml of water 20 ~ 30 kg, even spraying. Anti rape is unevenly distributed on the basis of as much as possible sowing, dry rape seedlings 2 to 3 leaf time seedlings make up seedlings, transfer and fill thin, with seedlings to fill the gap, stay weak and stay strong. The seedlings were planted with 2 to 3 seedlings per hole, and 20 to 25 seedlings per square meter were sowed and sowed. Prevent deficiencies and fertilizers per acre with 1500~2000 kg of cooked cow dung, spread 25~30 kg of 25% compound fertilizer, mix 1 kg of boron fertilizer and 1 kg of zinc fertilizer, and apply as base fertilizer, then separate the ditch. . When sowing, wet the seeds with 0.7-0.8 kg of borax and mix well with 20-25 kg of wet ash. Before the winter mu, 350 ~ 400 kilograms of fire ash combined with cultivator rake, while the use of wet soil conditions after rain, acres of urea 10 ~ 15 kg, potassium chloride 4 ~ 5 kg. At the beginning of the flowering period, 150 grams of borax (with a little hot water) was added and 100 grams of monopotassium phosphate was added to 50 kg of water to spray evenly. In addition, pay attention to prevention and control of pests and diseases.