我国是世界上化肥生产量、使用量最多的国家,但肥料利用率却偏低,全国氮肥利用率只有30%-35%,磷肥当季利用率只有15%-20%,钾肥当季利用率只有35%-50%。一方面,造成了肥料资源的浪费,增加了农业生产成本,降低了农民收入,据不完全统计,我国每年损失的氮素相当于4000多万吨硫酸铵,价值高达300多亿元;另一方面,养分大量 China is the country where fertilizer production and consumption are the highest in the world, but the fertilizer utilization rate is low, the utilization rate of nitrogen fertilizer is only 30% -35% in the country, the utilization rate of phosphorus fertilizer is only 15% -20%, and the seasonal utilization rate of potassium fertilizer Only 35% -50%. On the one hand, waste of fertilizer resources is caused, agricultural production costs are increased, and peasants’ income is reduced. According to incomplete statistics, the annual loss of nitrogen in our country is equivalent to more than 40 million tons of ammonium sulfate, worth as much as 30 billion yuan. Another In terms of a lot of nutrients