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引用污水灌溉稻田是处理与综合利用城市污废水的主要途径之一。但污废水成分比较复杂,有其有利于水稻吸收的大量氮素与少量的磷、钾,又有其不利于水稻吸收的酸、碱、酚、油、氯化物、氰化物与硫化物等有害成分。如果灌溉量得当,即可发挥氮素增产作用;否则将导致贪青徒长、倒伏或发生稻瘟病而减产。我所从1959年开始与中国农业科学院辽宁分院、中国科学院林业土壤研究所等单位,进行了污水灌溉用量与氮肥定额试验。1963年在过去研究的基础上,我所又在污水灌区进行在不同肥力条件下不同品种和不同密度的试验。并通过
Citing irrigated rice fields is one of the main ways to deal with and comprehensively utilize municipal wastewater. However, the composition of wastewater is relatively complex, with a large amount of nitrogen and a small amount of phosphorus and potassium that are good for rice absorption and harmful to acids, alkalis, phenols, oils, chlorides, cyanides and sulfides which are unfavorable to rice absorption ingredient. If the amount of irrigation is appropriate, can play a role in increasing nitrogen yield; otherwise it will lead to corvee growth, lodging or rice blast and yield reduction. Since 1959, we have conducted experiments on the amount of irrigated water and the quota of nitrogen fertilizer with the Liaoning Branch of Chinese Academy of Agricultural Sciences and the Institute of Forestry and Soil Science, Chinese Academy of Sciences. On the basis of past research in 1963, I again conducted experiments on different varieties and densities under different fertility conditions in sewage irrigation areas. And passed