| 摘要: |
| 十多年来,各地把亚铵法草浆废液当做肥料或灌水,直接施用于农田,已经取得了十分显著的增产效果。一些主要作物如麦、稻棉和某些蔬菜等,当季增产幅度很大,可13—56%而且还有一定的后效。从最初不敢问津到后来争相施用,说明农民群众充分肯定并认识了亚铵废液的肥料意义。但是人们也还存在着一些顾虑:长期施用废液对作物的主要环境条件——土壤有什么不利的影响没有?会不会也有污染现象?……。为了解前一方 |
| 关键词: 土壤孔隙 草浆废液 亚铵法 有机质积累 稻麦轮作 施用量 试验田 对照 长期施用 废液处理 |
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| THE EFFECTS ON SOIL PROPERTIES OF IRRIGATING STRAW-PAPER-PULPING EFFLUENTS BY METHOD AMMONIUM SULFITE |
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| Abstract: |
| The effects on main properties of a hight meadow soil,developed on the alluvial parent material by Yellow River near Xin Xiang in Henan Province,which was fertilized by straw paper poulping efflue- nts for a long time(5-6 years),have been studied. The total nitrogen content of both irrigated cotton fields and paddy-irrigated wheat alternated fields less increased about 9%,the available nitrogen content appeared only a tendency to increase. The effect on the content of total phousphor and available phousp- h... |
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