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江苏太湖地区水稻的前期氮肥,以本地产碳铰为主。每公顷用量可达750～1125kg;施用方法习惯采用田面有水层时面施。因氨的挥发、耕作和灌慨伴随造成的水土流失,溶解于水层中的肥料大量流失,既浪费资源,又污染环境。近两年针对上述问题,我们研究了碳铵的稻田全层湿施法,具有较高的肥效和控污染。1设计与方法1.1试验设计 两年的田间试验于1996、1997年在江苏太湖地区农科所试验场进行。前茬小麦,供试
Rice in the early stage of Taihu Lake in Jiangsu nitrogen fertilizer, mainly to local carbon hinge. Amount per hectare up to 750 ~ 1125kg; application method used to surface when there is water surface layer. Due to the volatilization of ammonia, the soil and water loss caused by cultivation and irrigation, the amount of fertilizer dissolved in the water layer is greatly lost, thus wasting resources and polluting the environment. In the past two years, in response to the above problems, we studied the ammonium bicarbonate rice paddy wet cast, with higher fertilizer efficiency and pollution control. 1 Design and Methods 1.1 Experimental Design Two years of field trials in 1996 and 1997 in the Taihu Lake region in Jiangsu Institute of Agricultural Experiment carried out. Pre-crop wheat, for the test