1. Variety selection Zhejiang 105, Jiayu 253, Yongxian 57
Second, the whole seedling technology 1. Improve the quality of land preparation 15-20 days before sowing to complete the first tillage. The border should be flat, soft and hard, and horizontal, vertical and surrounding trenches should be made. The width of the border is 4-5 meters, and the width of the ditch is 0.2-0.3 meters.
2. After a day of seed treatment and seeding before sowing and sowing, soak the seeds for 48 hours with fungicides such as "soaking spirit", "soaking feng", "zhenling", and "prochloraz". The seeds should be turned frequently during soaking. Promoting buds should be moderate, generally with white or buds and half grains. 2-4 hours before sowing, 35% rice mixed powder 20g can be used to mix dry seeds 5kg, so as to prevent sparrow damage after sowing.
3. Seeding at the right time to do the next day after the planting, the live broadcast period is appropriate from April 8 to 10, and no later than April 15 at the latest.
4. Precision seeding The seeding amount per acre is 3.5-4 kg. When sowing, press the scale over the border and try to achieve uniform sowing.
3. Fertilization technology Generally, about 13 kg of pure nitrogen (equivalent to 28 kg of urea), 3 kg of pure phosphorus (equivalent to 25 kg of superphosphate), and 9 kg of pure potassium (equivalent to 15 kg of potassium chloride) are generally applied per mu. Phosphate fertilizer is used as a base fertilizer in one application; nitrogen fertilizer and potassium fertilizer are used as a base fertilizer and top dressing twice. Specific usage: Basal surface fertilizer: 7.5 kg of pure nitrogen (equivalent to 16.5 kg of urea), 3 kg of pure phosphorus (equivalent to 25 kg of superphosphate), 4.5 kg of pure potassium (equivalent to 7.5 kg of potassium chloride). Tillering fertilizer: divided into two applications, the first application of 3.5 kg of pure nitrogen (equivalent to 7.5 kg of urea) at the 3-4 leaf stage of seedlings, the second application of pure nitrogen 20-25 days after the first application of fertilizer Kg (equivalent to 4 kg of urea), 4.5 kg of pure potassium (equivalent to 7.5 kg of potassium chloride).
4. Moisture management technology Sowing till the stand-up period keeps the border surface moist, and it is not easy to irrigate the watering plate. Keep the ditch water after the seedlings are established, and establish a shallow water layer to promote tillering after the third leaf stage. In the mid-term, the farmland should be put on the ground for many times, and the method of "Chen Shui will not dry and new water will not enter" can be adopted. The intermittent irrigation method is used during the heading and grouting period; the dry and wet periods are alternated during the maturity period, avoid premature water cutoff, and cut off water 7 days before harvest.
5. Weed control techniques 10-15 days before tillage, drain the field water, choose sunny days, use 500-750 ml of 10% glyphosate water solution per mu, and add 50 kg of water to spray. Turn the field and press the grass about 7 days after the medicine. After weeding, weeding should be "early", and spraying can usually be done 2-4 days after sowing. Pharmacy can use 40% direct broadcast (benzylpyridine) wettable powder, 50-60 grams per acre or 30% sweeping (caoxiaote) emulsifiable concentrate, 100-120 ml per acre. The seedling board should be kept moist after application, and water should be kept in the ditch. In the 4-5 leaf stage, the barnyard grass density should be considered. If necessary, you can choose 50% quinclorac wettable powder 25-30 grams to remove barnyard grass, such as broad-leaved grass and sedge weeds. Add 10% benzhuanglong wettable powder of 30-40 grams per mu in combination with top dressing, and keep water for 5-7 days after application.
Six. Pest control strategies Based on the importance of seed disinfection and prevention of seed-borne diseases such as malaria seedling disease, according to the information of pests and diseases of agricultural technology departments, rice leaf roller borer, rice stem borer, rice louse and sheath blight should be prepared in time. Waiting for the prevention and treatment of diseases and insect pests.
Second, the whole seedling technology 1. Improve the quality of land preparation 15-20 days before sowing to complete the first tillage. The border should be flat, soft and hard, and horizontal, vertical and surrounding trenches should be made. The width of the border is 4-5 meters, and the width of the ditch is 0.2-0.3 meters.
2. After a day of seed treatment and seeding before sowing and sowing, soak the seeds for 48 hours with fungicides such as "soaking spirit", "soaking feng", "zhenling", and "prochloraz". The seeds should be turned frequently during soaking. Promoting buds should be moderate, generally with white or buds and half grains. 2-4 hours before sowing, 35% rice mixed powder 20g can be used to mix dry seeds 5kg, so as to prevent sparrow damage after sowing.
3. Seeding at the right time to do the next day after the planting, the live broadcast period is appropriate from April 8 to 10, and no later than April 15 at the latest.
4. Precision seeding The seeding amount per acre is 3.5-4 kg. When sowing, press the scale over the border and try to achieve uniform sowing.
3. Fertilization technology Generally, about 13 kg of pure nitrogen (equivalent to 28 kg of urea), 3 kg of pure phosphorus (equivalent to 25 kg of superphosphate), and 9 kg of pure potassium (equivalent to 15 kg of potassium chloride) are generally applied per mu. Phosphate fertilizer is used as a base fertilizer in one application; nitrogen fertilizer and potassium fertilizer are used as a base fertilizer and top dressing twice. Specific usage: Basal surface fertilizer: 7.5 kg of pure nitrogen (equivalent to 16.5 kg of urea), 3 kg of pure phosphorus (equivalent to 25 kg of superphosphate), 4.5 kg of pure potassium (equivalent to 7.5 kg of potassium chloride). Tillering fertilizer: divided into two applications, the first application of 3.5 kg of pure nitrogen (equivalent to 7.5 kg of urea) at the 3-4 leaf stage of seedlings, the second application of pure nitrogen 20-25 days after the first application of fertilizer Kg (equivalent to 4 kg of urea), 4.5 kg of pure potassium (equivalent to 7.5 kg of potassium chloride).
4. Moisture management technology Sowing till the stand-up period keeps the border surface moist, and it is not easy to irrigate the watering plate. Keep the ditch water after the seedlings are established, and establish a shallow water layer to promote tillering after the third leaf stage. In the mid-term, the farmland should be put on the ground for many times, and the method of "Chen Shui will not dry and new water will not enter" can be adopted. The intermittent irrigation method is used during the heading and grouting period; the dry and wet periods are alternated during the maturity period, avoid premature water cutoff, and cut off water 7 days before harvest.
5. Weed control techniques 10-15 days before tillage, drain the field water, choose sunny days, use 500-750 ml of 10% glyphosate water solution per mu, and add 50 kg of water to spray. Turn the field and press the grass about 7 days after the medicine. After weeding, weeding should be "early", and spraying can usually be done 2-4 days after sowing. Pharmacy can use 40% direct broadcast (benzylpyridine) wettable powder, 50-60 grams per acre or 30% sweeping (caoxiaote) emulsifiable concentrate, 100-120 ml per acre. The seedling board should be kept moist after application, and water should be kept in the ditch. In the 4-5 leaf stage, the barnyard grass density should be considered. If necessary, you can choose 50% quinclorac wettable powder 25-30 grams to remove barnyard grass, such as broad-leaved grass and sedge weeds. Add 10% benzhuanglong wettable powder of 30-40 grams per mu in combination with top dressing, and keep water for 5-7 days after application.
Six. Pest control strategies Based on the importance of seed disinfection and prevention of seed-borne diseases such as malaria seedling disease, according to the information of pests and diseases of agricultural technology departments, rice leaf roller borer, rice stem borer, rice louse and sheath blight should be prepared in time. Waiting for the prevention and treatment of diseases and insect pests.
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