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Second, nitrogen fertilizer should be combined with organic fertilizer and phosphorus and potassium fertilizer: high yield and stable yield of crops require a balanced supply of various nutrients. Single application of nitrogen fertilizer, especially on plots with phosphorus and less potassium, is difficult to obtain satisfactory. effect. The effective combination of nitrogen fertilizer and other fertilizers, especially phosphorus and potassium fertilizers, has significant effects on increasing nitrogen use efficiency and increasing yield. Nitrogen fertilizer combined with organic fertilizer can be used to complement each other, to promote mutual help, and to promote each other. It can meet the nitrogen needs of crop nutrient critical period in time. At the same time, organic fertilizer also has the function of soil improvement and fertilization. .
Huaxian County Fertilizer Station Zhao Dongli
Problems in scientific application of nitrogen fertilizer
First, the deep application of nitrogen fertilizer: deep application of nitrogen fertilizer can not only reduce the loss of nitrogen volatilization, leaching and denitrification, but also reduce the consumption of nitrogen by weeds, thereby increasing the utilization rate of nitrogen fertilizer and prolonging the action time of fertilizer.
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