土壤质地对玉米生育后期叶片衰老的影响

采用池栽方法探讨了砂壤、轻壤、中壤、粘壤4种土壤质地对玉米生育后期叶片衰老的影响。结果表明,玉米生育后期叶片不断衰老,SOD酶活性和叶面积下降,MDA含量逐渐上升。4种质地土壤玉米的叶片衰老表现不同,中壤玉米叶面积和SOD酶活性最高,砂壤则最小;MDA含量砂壤最大,中壤最小。在相同管理条件下,4种质地土壤的玉米产量表现出显著差异。

The Influence of Soil Texture on Maize Leaf Senescence During Later Growth Stage

The study on maize leaf senescence during later growth stage at different textural soils(sandy loam,light sandy,loam,clay) was conducted using pot cultivation in a field experiment.The main results are as follows:the maize leaves senescence increased in later growth stage,the activities of SOD and the leaf area decreased in different textural soils,while the content of MDA increased.Among the four textural soils,the leaf area and the activities of SOD in loam were the highest,the lowest in sandy loam.By contrast,the content of MDA in sandy loam was the highest,the lowest in loam.The different maize yield in the four textural soils reached significant level operated the same each other in field experiment.