一、化学氮肥利用率低的主要原因氮肥利用率低的原因是由于氮肥施入土壤后,会引起一系列的生物化学变化,可造成多方面的损失,归结起来主要是:1.化学氮肥全为水溶性的,施入土壤表层后,很快被水溶解,施肥后,如遇天雨或排灌管理不善,作物和土壤还未来得及吸收,就很快从地表或向下渗透 First, the main reason for low chemical nitrogen fertilizer utilization Nitrogen utilization rate is low because the nitrogen fertilizer into the soil, it will cause a series of biochemical changes, can cause a wide range of losses, summed up mainly: 1. Chemical nitrogen fertilizer Water-soluble, applied to the soil surface, quickly dissolved in water, fertilizer, in case of rain or irrigation and drainage poor management, crops and soil have not had time to absorb, it quickly from the surface or down infiltration