论文部分内容阅读
本文通过试验调查和示范推广,将乐都县化肥使用概况及目前浅山、川水地区适宜的氮磷比例试作简述,以期为该地区经济合理施用化肥提供科学依据。
Through the investigation and demonstration and popularization of experiments, this paper summarized the use of fertilizers in Ledu County and the suitable proportion of nitrogen and phosphorus in shallow mountains and rivers in Lishui County in order to provide a scientific basis for the economical and rational application of fertilizers in this area.