论文部分内容阅读
江苏北部新改的水稻田,大多数是黄淮冲积物石灰性土壤.目前单位面积产量普遍不高,除氮素肥料不足外,磷素营养贫乏可能是一个很重要的因素.本文是1976及1977年在响水县进行的磷肥和绿肥连应田间试验的总结.根据水稻的产量及其结构,植株各部分组成和养分含量,土壤速效性磷的动态,讨论了磷肥和绿肥在石灰性土壤上,对于水稻的增产效应及土壤磷素的影响.
Most of the paddy fields newly rebuilt in the north of Jiangsu Province are calcareous soil of the Huanghuai alluvial sediment.Nowadays, the yield per unit area is generally not high, and the deficiency of phosphorus nutrition may be a very important factor except nitrogen fertilizer.In this paper, According to the yield and structure of rice, the composition and nutrient contents of various parts of the plant, and the soil available phosphorus dynamics, the effects of phosphate fertilizer and green manure on calcareous soil On the yield-increasing effect of rice and soil phosphorus.