To promote vegetative growth and reproductive growth of crops, more nitrogen fertilizer was applied in the place with good light conditions. In places with poor light conditions, less nitrogen fertilizer should be applied to prevent crops from becoming green and ripening late. When the light is strong, deep fertilizer, prevent volatilization, photolysis, to apply more potassium fertilizer, phosphate fertilizer, in order to improve water utilization. Finally, fertilizer should be added as the crop's leaf area coefficient increases, but should be applied in the morning and after 4 p.m. to reduce consumption.
Different areas due to different water conditions and rainfall, fertilization technology will be more or less different. In the season of more rain should not be excessive application of nitrogen fertilizer, to prevent crop growth, but also to prevent pollution of water; In the case of drought and little rainfall, the appropriate amount of potassium fertilizer and phosphorus fertilizer should be applied. Increasing potassium fertilizer can improve the drought-resistance ability, increasing phosphorus fertilizer can improve the utilization rate of water, and can play the role of increasing nitrogen with phosphorus. In terms of operation methods, it should be noted that when soil water content is the highest, heavy fertilizer should be applied lightly, that is, the concentration of fertilizer should be high, but the amount should be small, and a certain distance should be kept from the crop plants. When the weather is dry, it is appropriate to apply light fertilizer heavy, or fertilizer less water more, increase the watering times.
Nitrogen, phosphorus and potassium fertilizer process is mainly composed of crusher, fertilizer mixing machine, granulator, screening machine, fertilizer coating machine, fertilizer automatic packaging machine. High efficiency of nitrogen, phosphorus and potassium fertilizer production line, saving labor cost.