Fertilizer is the key to high yield. The nature of chemical fertilizers is acidic, alkaline and neutral. Acidic, neutral fertilizers can be applied on saline soils, while alkaline fertilizers should be avoided on saline soils. For example, urea, ammonium bicarbonate, ammonium nitrate, etc. do not leave any impurities in the soil, do not increase the salt and alkali in the soil, and are suitable for application on saline soil; ammonium sulfate is a physiological acid fertilizer, in which ammonium is absorbed by wheat, Residual sulfate can reduce the alkalinity of saline and alkali, and is also suitable for application; alkaline fertilizers such as lime nitrogen and grass ash are not suitable for application on saline soil; sodium nitrate is also a physiological alkaline fertilizer, and the total nitrate ions are wheat. After absorption, the residual sodium not only increases soil salinity, but also increases soil alkalinity and makes the soil worse. It is also suitable to apply ammonium chloride in saline-alkaline wheat to avoid the increase of salt and affect the growth of wheat. For the application of phosphate fertilizer to saltland wheat, superphosphate should be used. Calcium, magnesium and phosphate fertilizers have no effect, but will increase the alkalinity of saline-alkali soil.
In combination with the application of organic fertilizer, there is a premise for the growth of wheat. In the application of chemical fertilizers in saline-alkaline wheat, it is necessary to pay attention to the application of organic fertilizers, which can not only supplement a variety of nutrients, but also help to reduce the concentration of soil solutions and reduce the damage caused by the application of chemical fertilizers.
Fertilization methods should be clever, and a small number of deep buried. The application of chemical fertilizers in saline-alkali wheat is different from the general good, and it should be noted that a small amount of application should be applied in a small amount to avoid the excessive concentration of the soil solution, which affects the absorption and growth of wheat. In addition, the application of ammonium nitrogen fertilizer on the saline-alkali soil is likely to cause the volatilization of ammonia, and it is necessary to emphasize the deep application. (Zhao Jiafeng)
Anhui Science and Technology News
In combination with the application of organic fertilizer, there is a premise for the growth of wheat. In the application of chemical fertilizers in saline-alkaline wheat, it is necessary to pay attention to the application of organic fertilizers, which can not only supplement a variety of nutrients, but also help to reduce the concentration of soil solutions and reduce the damage caused by the application of chemical fertilizers.
Fertilization methods should be clever, and a small number of deep buried. The application of chemical fertilizers in saline-alkali wheat is different from the general good, and it should be noted that a small amount of application should be applied in a small amount to avoid the excessive concentration of the soil solution, which affects the absorption and growth of wheat. In addition, the application of ammonium nitrogen fertilizer on the saline-alkali soil is likely to cause the volatilization of ammonia, and it is necessary to emphasize the deep application. (Zhao Jiafeng)
Anhui Science and Technology News
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