生态产业科学与磷氟工程

在化肥价格剧烈增长的情况下,合理施用化肥成为保证农业发展和农民增收的关键。经过多方面数据分析发现,我国氮磷钾化肥总用量很大,单位面积化肥用量超过世界上大多数发达国家,而且在部分地区部分作物上出现超量施用的现象,这与10年前化肥投入不足的局面已经完全不同。当前我们面临肥料利用率下降、肥料投入过量、品种结构不合理、施用方法粗犷等众多问题。按照这一分析,我国氮肥用量增长率将放缓,磷钾肥用量可能会下降。

With the quickly increasing chemical fertilizer price,scientific fertilization in China is considered significant for keeping the sustainable development of agriculture and rise of farmer’s income.Compared with those of some developed countries,huge amount of fertilizer is used in China now,even in some regions or some crop systems,overused fertilizer becomes a popular,however fertilizer application was insufficient in most regions ten years ago.China is facing the decreasing fertilizer use efficiency,which results from huge amount fertilizer application,unreasonable fertilizer product structure and unscientific fertilization method.Based on the above-mentioned these problems and expensive fertilizer price,the prediction is given that the growth rate of total demand for nitrogen in China will be slow down and the total demand for phosphate and potash will go down.