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对小麦机械收获后残茬覆盖与不覆盖两种条件下免耕、翻耕和播种行深松3种土壤耕作方式的夏玉米开花后叶片衰老生理特性和籽粒产量进行了研究.结果表明,残茬覆盖和深松耕作的玉米叶片SOD和POD活性提高、MAD含量降低、叶绿素和可溶性蛋白质含量高、降解速度慢,维持了叶片后期较高的生理功能.最终开花后干物质生产量和玉米籽粒产量表现为:覆盖显著高于不覆盖,深松显著高于翻耕和免耕,残茬覆盖与深松结合效果最好.
The senescence physiological characteristics and grain yield of summer maize (Zea mays L.) after flowering were studied under no-tillage, tillage and sowing subsoiling under two conditions of mechanical stubble harvesting and no-covering, respectively. The results showed that residual The activities of SOD and POD in mulched and deep-tillage maize leaves increased, the content of MAD decreased, the content of chlorophyll and soluble protein was high, the degradation rate was slow, and the higher physiological function was maintained in late leaves. After the final flowering, The yield showed that the coverage was significantly higher than the uncovered, the deep-plowing was significantly higher than the tillage and no-tillage, and the combination of the stubble covering and the deep-loess was the best.