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作 者 ：周焱;罗安程

期 刊 ：植物营养与肥料学报 1997年 3卷 3期 页码：243-248

关键词：有机肥；小麦；磷吸收；

摘 要 ：通过温室砂培、室内分析，研究了有机肥、无机肥和有机无机配合对小麦根系活力、根系酸性磷酶活性、根尖呼吸作用、根系ATP酶活性，以及磷的吸收动力学参数的影响。结果表明，有机与无机肥配合施用，增加了小麦根系的活力。单施有机肥在培养初期能显著提高根系活力，培养时间增长，效果明显下降，而有机无机肥配施处理能较长时间保持根系有较高的活力。有机无机肥配合，使小麦磷吸收动力学参数发生变化，有机肥和有机无机肥配合处理使Imax增加，Km减小。结果说明，有机肥除提供小麦营养外，对其根系活力、生理代谢和吸收能力都有影响，从而直接促进了小麦对磷的吸收。

Abstract:Sandy culture was conducted to study the effect of organic manure on the root activities, phosphatase. respiration and kinetics of phosphorus absorption by wheat. The results showed that the combination use of organic manure and inorganic manure displayed significantly higher root vigor expressed by TTC oxidizing capability. The energy level indicated by ATPase activity and respiration rate could be enhanced by the application of organic manure. However, this effect in organic manure treatment occured only during the first 10 days, while during 40 days culture Period the combination use of organic manure could maitain relatively high energy level and root vigor which was closely associated with the absorption of phosphorus indicated by low Km. The roots in organic manure treatment also showed high phosphatase activity that played an important role in organic phosphorus absorption.

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