宝象河
宝象河-
降雨是氮素流失的重要影响因素，施肥后降雨能使沟渠水中总氮浓度升高，如果降雨强度大到能使沟渠流动，那么氮素极其容易随水流进入宝象河。
Rainfall is an important nitrogen loss factors , rainfall after fertilizer application can increase the concentration of total nitrogen in the water drains , if the rainfall intensity to make the drains flow , then is very easy with nitrogen flow into the Dianchi Lake .