The nutritional characteristics of wheat are generally moderate fertility levels. For every 100 kg of wheat kernels produced, about 3 kg of nitrogen, 1.0 to 1.5 kg of phosphorus, and 2.5 to 3.1 kg of potassium are required. The absorption rate of nitrogen, phosphorus and potassium nutrients is different in different growth stages of wheat. There are two peaks in nitrogen absorption. One is from tillering to wintering. The nitrogen uptake during this period accounts for 13.5% of the total absorption, which is the period of rapid population development. The other is from the jointing to the booting stage. The amount accounts for 37.3% of the total absorption, which is the period of the most nitrogen uptake. The absorption of phosphorus and potassium generally increases with the growth of wheat, and the absorption rate increases sharply after jointing. More than 40% of phosphorus and potassium nutrients are absorbed after booting.
Although wheat absorbs the absolute amount of trace elements such as zinc, boron, manganese, copper and molybdenum, it plays an important role in the growth and development of wheat. Zinc nutrition should be enhanced in wheat seedling stage and grain maturity; manganese has a great influence on the growth of leaves and stems of wheat; boron is mainly distributed in the tops of leaves and stems, and the growth period of boron-deficient plants is delayed, and stamens are not well developed. Normal pollination, and finally withered and not strong.
Wheat fertilization technology application of base fertilizer. "Mai Xi is rich in the tires, and the base fertilizer is the foundation." For wheat fields with sticky soil texture, strong fertilizer retention and no irrigation conditions, all fertilizers can be applied as base fertilizer once, commonly known as “one shellingâ€. The specific method is to apply the full amount of organic fertilizer, 2/3 nitrogen, phosphorus, and potassium fertilizer to the surface, and immediately plow the soil. After ploughing, the remaining fertilizer is spread on the hoe and then into the soil. For sand or irrigated land with poor fertilizer retention performance, a split fertilization method using heavy base fertilizer and skillful top dressing may be employed. That is, 2/3 of the nitrogen fertilizer and all the phosphorus and potassium fertilizers and organic fertilizers are used as the base fertilizer, and the remaining nitrogen fertilizer is used as the top dressing. Fertilization is the most cost-effective method of fertilization. Generally, 2~3kg of urea per acre, or 8~10kg of superphosphate, or about 10kg of compound fertilizer.
Micro-fertilizer can be used as base fertilizer or seed dressing. When used as a base fertilizer, it is difficult to spread evenly due to the small amount of use, and it can be mixed with fine soil and then applied to the surface, and then ploughed into the soil. When seeding with zinc or manganese fertilizer, 2 to 6 g of zinc sulfate and 0.5 to 1 g of manganese sulfate per kg of seed are planted immediately after seed dressing.
Application of top dressing. Skillful application of topdressing is an important measure to obtain high yields of wheat. The time for topdressing should be early, and it should be pursued before winter. It is often said that "the year is not as good as the year." Most of the fertilizers are used to topdressing nitrogen fertilizer. However, when the base fertilizer is not applied with phosphate fertilizer and potassium fertilizer, and the soil supply of phosphorus and potassium is insufficient, the phosphate fertilizer and potassium fertilizer should be properly applied. For high-yield fields with insufficient potassium, it is also possible to apply about 150 kg of grass ash before winter. For wheat fields with sufficient fertilizer, avoid excessive application of nitrogen fertilizer, and the time of top dressing should not be late. Otherwise, it will easily lead to late maturity and reduce production.
Spraying fertilizer outside the roots. External root spray fertilizer is an effective fertilization method to supplement the nutritional deficiency in late wheat. Due to inconvenient topdressing in the wheat field, the absorption capacity of the root system is decreasing with the advancement of the growth period. Therefore, if the fertilizer must be applied after the late growth of the wheat, foliar spraying can be used, which is also an emergency measure for increasing wheat production.
Source: Farmers Daily Author: Gao Xiang photos
(Author: National Agricultural Technology Extension Service Center)
Although wheat absorbs the absolute amount of trace elements such as zinc, boron, manganese, copper and molybdenum, it plays an important role in the growth and development of wheat. Zinc nutrition should be enhanced in wheat seedling stage and grain maturity; manganese has a great influence on the growth of leaves and stems of wheat; boron is mainly distributed in the tops of leaves and stems, and the growth period of boron-deficient plants is delayed, and stamens are not well developed. Normal pollination, and finally withered and not strong.
Wheat fertilization technology application of base fertilizer. "Mai Xi is rich in the tires, and the base fertilizer is the foundation." For wheat fields with sticky soil texture, strong fertilizer retention and no irrigation conditions, all fertilizers can be applied as base fertilizer once, commonly known as “one shellingâ€. The specific method is to apply the full amount of organic fertilizer, 2/3 nitrogen, phosphorus, and potassium fertilizer to the surface, and immediately plow the soil. After ploughing, the remaining fertilizer is spread on the hoe and then into the soil. For sand or irrigated land with poor fertilizer retention performance, a split fertilization method using heavy base fertilizer and skillful top dressing may be employed. That is, 2/3 of the nitrogen fertilizer and all the phosphorus and potassium fertilizers and organic fertilizers are used as the base fertilizer, and the remaining nitrogen fertilizer is used as the top dressing. Fertilization is the most cost-effective method of fertilization. Generally, 2~3kg of urea per acre, or 8~10kg of superphosphate, or about 10kg of compound fertilizer.
Micro-fertilizer can be used as base fertilizer or seed dressing. When used as a base fertilizer, it is difficult to spread evenly due to the small amount of use, and it can be mixed with fine soil and then applied to the surface, and then ploughed into the soil. When seeding with zinc or manganese fertilizer, 2 to 6 g of zinc sulfate and 0.5 to 1 g of manganese sulfate per kg of seed are planted immediately after seed dressing.
Application of top dressing. Skillful application of topdressing is an important measure to obtain high yields of wheat. The time for topdressing should be early, and it should be pursued before winter. It is often said that "the year is not as good as the year." Most of the fertilizers are used to topdressing nitrogen fertilizer. However, when the base fertilizer is not applied with phosphate fertilizer and potassium fertilizer, and the soil supply of phosphorus and potassium is insufficient, the phosphate fertilizer and potassium fertilizer should be properly applied. For high-yield fields with insufficient potassium, it is also possible to apply about 150 kg of grass ash before winter. For wheat fields with sufficient fertilizer, avoid excessive application of nitrogen fertilizer, and the time of top dressing should not be late. Otherwise, it will easily lead to late maturity and reduce production.
Spraying fertilizer outside the roots. External root spray fertilizer is an effective fertilization method to supplement the nutritional deficiency in late wheat. Due to inconvenient topdressing in the wheat field, the absorption capacity of the root system is decreasing with the advancement of the growth period. Therefore, if the fertilizer must be applied after the late growth of the wheat, foliar spraying can be used, which is also an emergency measure for increasing wheat production.
Source: Farmers Daily Author: Gao Xiang photos
(Author: National Agricultural Technology Extension Service Center)
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