According to different characteristics, various nitrogen fertilizers should be treated differently. Ammonium bicarbonate is easy to be used for ammonia, and it is suitable for deep application of base fertilizer; nitrate nitrogen fertilizer has strong mobility in soil and fast fertilizer efficiency, which is a good top dressing for dry land; general paddy field can be used as ammonium fertilizer or urea. Some fertilizers are toxic to seeds, such as urea, ammonium bicarbonate, ammonia water, lime nitrogen, etc., not suitable for seed fertilizer; ammonium sulfate, etc., although it can be used as seed fertilizer, the amount should not be too much, and soil is preferably isolated between fertilizer and seeds. . In the arid areas where rainfall is low, the problem of leaching of nitrate nitrogen is not prominent. Therefore, it is more suitable to apply nitrate nitrogen fertilizer. In rainy areas or rain season, it is better to apply ammonium nitrogen fertilizer and urea.
Deep application should be applied when applying nitrogen fertilizer. Deep application of nitrogen fertilizer can reduce the direct evaporation of fertilizer, loss of water, nitrification and denitrification. Deep fertilization is also beneficial to root development, deep rooting and expanding nutrient area.
Other fertilizers should be properly applied when applying nitrogen fertilizer. The combination of nitrogen fertilizer and organic fertilizer plays an important role in capturing high yield, stable yield and reducing cost of crops. This can not only better meet the nutrient needs of crops, but also fertilize soil. Nitrogen fertilizer combined with phosphate fertilizer can improve the utilization of nitrogen and phosphorus nutrients, especially in soils with low soil fertility, and the application of nitrogen and phosphorus fertilizers is better. In soils with insufficient potassium content, nitrogen fertilizer combined with potassium fertilizer can also increase the effect of nitrogen fertilizer.
According to the target yield of crops and the nitrogen supply capacity of the soil, determine the reasonable amount of nitrogen fertilizer, and reasonably grasp the bottom, topdressing ratio and application period, which depends on the specific crops and combine with agronomic measures such as irrigation and farming.
Deep application should be applied when applying nitrogen fertilizer. Deep application of nitrogen fertilizer can reduce the direct evaporation of fertilizer, loss of water, nitrification and denitrification. Deep fertilization is also beneficial to root development, deep rooting and expanding nutrient area.
Other fertilizers should be properly applied when applying nitrogen fertilizer. The combination of nitrogen fertilizer and organic fertilizer plays an important role in capturing high yield, stable yield and reducing cost of crops. This can not only better meet the nutrient needs of crops, but also fertilize soil. Nitrogen fertilizer combined with phosphate fertilizer can improve the utilization of nitrogen and phosphorus nutrients, especially in soils with low soil fertility, and the application of nitrogen and phosphorus fertilizers is better. In soils with insufficient potassium content, nitrogen fertilizer combined with potassium fertilizer can also increase the effect of nitrogen fertilizer.
According to the target yield of crops and the nitrogen supply capacity of the soil, determine the reasonable amount of nitrogen fertilizer, and reasonably grasp the bottom, topdressing ratio and application period, which depends on the specific crops and combine with agronomic measures such as irrigation and farming.
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