一、试验目的在冷水田、烂泥田、一般田块等不同冷浸田,进行冷浸田水稻基础地力与产量反应,冷浸田综合治理集成技术的增产效应研究。比较不同基础地力、集成技术与施肥的产量效应关系和氮肥利用率差异,利用习惯施肥区和集成技术区比较养分管理的增产效应。二、试验设计试验设四个处理。处理一:不施氮的空白区;处理二:习惯耕作区;处理三:集成技术1区;处理四:集成技术2区水稻栽插密度及规格见下表(不施氮处理面积50,其他处理 First, the purpose of the experiment In cold paddy fields, mud fields, fields and other fields commonly paddy field, cold paddy field rice base fertility and yield response, cold paddy field integrated management of integrated technology yield effects. The yield-effect relationship and nitrogen use efficiency of different fertility and land cover technologies were compared. The yield-increasing effects of nutrient management were compared by using conventional fertilization and integrated technology zones. Second, the experimental design test set four treatment. Treatment 1: blank area without nitrogen application; treatment 2: conventional farming area; treatment 3: integrated technology area 1; treatment 4: integration technique The planting density and specifications of paddy rice in the second area are shown in the following table deal with