Technical points:
1. Select the varieties that are dense, resistant to fall, and suitable for mechanical harvesting. Select the varieties that have been examined and approved by the country or province, have been planted in the local area and have excellent performances of density resistance, lodging resistance, adaptability to mechanical precision on demand, and mechanical harvesting. The direct receipt of grain machinery requires the rapid dehydration in the later period and the fertility period is 5-7 days. Seed quality is in line with the provisions of GB4404.1 "Grain Crop Seed Quality Standards - Cereals".
2. Density planting. According to the local climatic conditions, soil conditions, production conditions, species characteristics and production purposes, reasonable spacing arrangement, to ensure the appropriate density. The light conditions in the northwest region are relatively good. Generally, mid-late and late-maturing varieties retain 6000–6500 plants/mu; mid-early-maturing varieties are 7000–7500 plants/mu. The early-maturing varieties in the northeast region range from 6000 to 6500 per mu, and the medium-maturing varieties range from 5000 to 5500 per mu.
3. Use mechanical precision sowing. Single seed sowing rate should be higher than 96%. Through adequate planting, appropriate sowing, etc., to ensure Miao Qi, Miao uniform, Miao Quan, Miao Zhuang, improve the uniformity of the group. When seeding with seed fertilizer, seed and fertilizer are separated.
4. Fertilization by stages. According to the local corn production target and fertility level, soil testing and formula fertilization were conducted, and formulas or special formula fertilizers recommended by soil-fertility stations at all levels were used. In areas where conditions permit, high-quality crude organic fertilizer is applied for 2 to 3 tons per acre or about 1 ton of refined organic fertilizer; total phosphorus fertilizer, 30% to 40% of nitrogen fertilizer (if there is seed fertilizer can be reduced accordingly) and 70% of potassium fertilizer base fertilizer. The remaining fertilizer is subjected to a one-time mechanical top dressing before the small bellmouth period.
5. Chemical control and prevention. For plots often lodging and areas with high density, overgrowth, and poor lodging resistance, spraying control chemicals, such as jade gold, Teng Tianbao, and hydroxyethele, can be applied during the 6-8 leaf stage of maize. , Control the internode length of the base, enhance the strength of the stalk, and prevent lodging.
6. timely late harvest, mechanical harvest. According to the planting distance and the quality of the work required to choose the appropriate harvesting machinery. Corn can be harvested after ripening. Grain mechanical harvesting can be harvested 2 to 4 weeks after physiological maturity (grain lining disappears completely). The grain moisture content should be below 28%. Once the panicles are harvested, stripped and threshed, and the stalks are treated (segmented). Silage or smashed into the field) and other operations.
7. Straw returned to field, fertility and fertility. Use forage grass picking and tying machine to bale the straw for feed, or use the straw returning machine to smash the straw. Turn the plow to the ground, depth 30 to 40 cm.
2. Density planting. According to the local climatic conditions, soil conditions, production conditions, species characteristics and production purposes, reasonable spacing arrangement, to ensure the appropriate density. The light conditions in the northwest region are relatively good. Generally, mid-late and late-maturing varieties retain 6000–6500 plants/mu; mid-early-maturing varieties are 7000–7500 plants/mu. The early-maturing varieties in the northeast region range from 6000 to 6500 per mu, and the medium-maturing varieties range from 5000 to 5500 per mu.
3. Use mechanical precision sowing. Single seed sowing rate should be higher than 96%. Through adequate planting, appropriate sowing, etc., to ensure Miao Qi, Miao uniform, Miao Quan, Miao Zhuang, improve the uniformity of the group. When seeding with seed fertilizer, seed and fertilizer are separated.
4. Fertilization by stages. According to the local corn production target and fertility level, soil testing and formula fertilization were conducted, and formulas or special formula fertilizers recommended by soil-fertility stations at all levels were used. In areas where conditions permit, high-quality crude organic fertilizer is applied for 2 to 3 tons per acre or about 1 ton of refined organic fertilizer; total phosphorus fertilizer, 30% to 40% of nitrogen fertilizer (if there is seed fertilizer can be reduced accordingly) and 70% of potassium fertilizer base fertilizer. The remaining fertilizer is subjected to a one-time mechanical top dressing before the small bellmouth period.
5. Chemical control and prevention. For plots often lodging and areas with high density, overgrowth, and poor lodging resistance, spraying control chemicals, such as jade gold, Teng Tianbao, and hydroxyethele, can be applied during the 6-8 leaf stage of maize. , Control the internode length of the base, enhance the strength of the stalk, and prevent lodging.
6. timely late harvest, mechanical harvest. According to the planting distance and the quality of the work required to choose the appropriate harvesting machinery. Corn can be harvested after ripening. Grain mechanical harvesting can be harvested 2 to 4 weeks after physiological maturity (grain lining disappears completely). The grain moisture content should be below 28%. Once the panicles are harvested, stripped and threshed, and the stalks are treated (segmented). Silage or smashed into the field) and other operations.
7. Straw returned to field, fertility and fertility. Use forage grass picking and tying machine to bale the straw for feed, or use the straw returning machine to smash the straw. Turn the plow to the ground, depth 30 to 40 cm.
Can be used directly to maintain the integrity of cell morphology Guidelines recommend cell preservation fluids for sample preservation and transport. It can be used for sputum, bronchoscopic alveolar lavage fluid, pleural fluid and other liquid samples.
Sample storage tubes,Medical disposable storage tubes,Disposable medical consumables
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