| 连续施用氮、磷化肥对黑土胶体性质及酶活性影响的研究 |
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| 引用本文： | 赵国栋,王兆荣.连续施用氮、磷化肥对黑土胶体性质及酶活性影响的研究[J].吉林农业科学,1990(1):49-55,59. |
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| 作者姓名： | 赵国栋 王兆荣 |
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| 摘 要： | 本试验是在东北农学院院内黑土上,于1982年开始的化肥长期定位试验的基础上,初步研究了连续施用氮、磷化肥对黑土胶体性质及酶活性的影响。结果表明,连续施用化肥(N、P)使胶体比表面积增加,有利于胶体对磷的吸附和固定,使土壤胶体保水性减弱。氮、磷化肥对土壤脲酶活性没有影响,对过氧化物酶活性有抑制作用,而对中性磷酸酯酶活性的影响较复杂,尚待更长期的定位试验加以研究。
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| 关 键 词： | 黑土 氮肥 磷肥 胶体 酶活性 |
THE EFFECTS OF APPLYING N P FERTILIZERS CONSTANTLY ON THE PROPERTIES OF COLLOID AND MAIN ENZYME ACTIVITIES IN BLACK SOIL |
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| Abstract: | The results of the experiment showed:The specific surface area of Colliod and the amount of absorbed P were incrcased:the water retaining Capacity was decreased with the increasing of N and P applied and experiment time.The activity of urease in soil was not effected and catalases was restricted by N and P applied,The effect of N、P applied on neutral Phosphatase was showed complicatedly and should study further in the future. |
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