Rape is the largest cash crop in our city. In recent years, with the rise in edible oil prices, the planting area of ​​rape in our city has steadily increased. From mid-September to mid-October is the best time for rapeseed sowing. A few days ago, the reporter interviewed Wang Xianghua, vice president and senior agronomist of the Municipal Academy of Agricultural Sciences on no-tillage rapeseed high-yielding technology.
Wang Xianghua said that this technology is a light cultivation technique that directly spreads, drills, or sows rapeseed without ploughing tillage after harvesting the former crop. No-tillage live broadcasting is more labor-saving and time-saving, and it is labor-intensive to facilitate other operations and agricultural arrangements. Both paddy fields and dry land can be raped directly without tillage. The key to high yield and high efficiency is to do a good job of weeding, sowing and seedling management.
Wang Xianghua said that the field where the rice crop was formerly planted should be based on the soil moisture and the type of soil to determine the appropriate time for furrowing. It is advisable to use a 1.2-1.6m wide furrow, a 0.2m furrow width, and a 0.15m furrow depth. Waist ditch, ditch ditch, so that the ditch communicates. Before sowing, spread 5000 kg of farmyard manure per acre, and spread 15-20 kg of compound fertilizer and 1 kg of borax evenly.
Wang Xianghua said that before seeding, the seeds should be sunned for a long time, then 10% salt water should be used for seeding, and the fish should be washed with water, granules, and sclerotia. Finally, the selected seeds should be allowed to dry and ready for sowing. There are three methods for live broadcasting, broadcast, broadcast, mainly on demand. The sowing rate per mu is about 400 grams. When sowing seeds, add 50kg of plant ash and 6-7kg of phosphate fertilizer and mix them. Each 4-5 rows of plants, spaced 33-40 centimeters apart, 17-20 centimeters of plant spacing, planted 0.8-1.2 million holes per acre, a depth of about 3 centimeters, and seeded 4-5 seeds per hole. After emergence, rape seedlings should be divided into grades. Each time the seedlings are removed, sick, weak, and hybrid seedlings should be removed. The first homogenization was carried out after the seedlings; the second seedling was carried out when the second true leaf was grown. Rapeseed grows to 3-4 leaves and is seedling-fixed. Generally fertility leaves 1.5-2 million plants per acre. After fixing the seedlings, 15% paclobutrazol wettable powder 50g watered 50-60 kg per acre spray to prevent high seedlings. When 3-4 leaves, the topdressing urea should be 6-7 kilograms per acre.
Wang Xianghua said that chemical weeding is the key to the cultivation of live rape. 4-5 days before sowing, use 10% glyphosate 500 ml, or 4l% Dunda 100 ml, spray 50 kg water; can also be used in rapeseed cover soil, acetochlor 8O per acre Grams of water evenly sprayed on the car. When 3-4 leaves, spray grassy weeds with 10.8% high-efficient gaiseng EC (selective herbicides) and 20-30 kg of mu with 20-30 kg of water. It is prohibited to use "double kill" herbicides after emergence.
Wang Xianghua said that no-tillage live rape seedlings grow fast, the leaves are green and susceptible to pests. Especially in the autumn and winter drought, it is necessary to pay attention to controlling cabbage caterpillars and aphids. Both can use 45 ml of “farms†to fight 20 kg of clear water against cabbage seedlings, or use 40% phoxim 50 to 60 grams of water. 3O kg spray control.
Wang Xianghua said that this technology is a light cultivation technique that directly spreads, drills, or sows rapeseed without ploughing tillage after harvesting the former crop. No-tillage live broadcasting is more labor-saving and time-saving, and it is labor-intensive to facilitate other operations and agricultural arrangements. Both paddy fields and dry land can be raped directly without tillage. The key to high yield and high efficiency is to do a good job of weeding, sowing and seedling management.
Wang Xianghua said that the field where the rice crop was formerly planted should be based on the soil moisture and the type of soil to determine the appropriate time for furrowing. It is advisable to use a 1.2-1.6m wide furrow, a 0.2m furrow width, and a 0.15m furrow depth. Waist ditch, ditch ditch, so that the ditch communicates. Before sowing, spread 5000 kg of farmyard manure per acre, and spread 15-20 kg of compound fertilizer and 1 kg of borax evenly.
Wang Xianghua said that before seeding, the seeds should be sunned for a long time, then 10% salt water should be used for seeding, and the fish should be washed with water, granules, and sclerotia. Finally, the selected seeds should be allowed to dry and ready for sowing. There are three methods for live broadcasting, broadcast, broadcast, mainly on demand. The sowing rate per mu is about 400 grams. When sowing seeds, add 50kg of plant ash and 6-7kg of phosphate fertilizer and mix them. Each 4-5 rows of plants, spaced 33-40 centimeters apart, 17-20 centimeters of plant spacing, planted 0.8-1.2 million holes per acre, a depth of about 3 centimeters, and seeded 4-5 seeds per hole. After emergence, rape seedlings should be divided into grades. Each time the seedlings are removed, sick, weak, and hybrid seedlings should be removed. The first homogenization was carried out after the seedlings; the second seedling was carried out when the second true leaf was grown. Rapeseed grows to 3-4 leaves and is seedling-fixed. Generally fertility leaves 1.5-2 million plants per acre. After fixing the seedlings, 15% paclobutrazol wettable powder 50g watered 50-60 kg per acre spray to prevent high seedlings. When 3-4 leaves, the topdressing urea should be 6-7 kilograms per acre.
Wang Xianghua said that chemical weeding is the key to the cultivation of live rape. 4-5 days before sowing, use 10% glyphosate 500 ml, or 4l% Dunda 100 ml, spray 50 kg water; can also be used in rapeseed cover soil, acetochlor 8O per acre Grams of water evenly sprayed on the car. When 3-4 leaves, spray grassy weeds with 10.8% high-efficient gaiseng EC (selective herbicides) and 20-30 kg of mu with 20-30 kg of water. It is prohibited to use "double kill" herbicides after emergence.
Wang Xianghua said that no-tillage live rape seedlings grow fast, the leaves are green and susceptible to pests. Especially in the autumn and winter drought, it is necessary to pay attention to controlling cabbage caterpillars and aphids. Both can use 45 ml of “farms†to fight 20 kg of clear water against cabbage seedlings, or use 40% phoxim 50 to 60 grams of water. 3O kg spray control.
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