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在旱地大田条件下研究了深耘断根对旱地高产小麦花后根系衰老及产量的影响 .结果表明 ,4个处理中以冬前深耘断根最好 ,起身期深耘断根与对照 (不断根 )次之 ,冬前和起身期都深耘断根的效果最差 .冬前深耘断根可延迟花后根系活力、根系SOD与CAT活性、根系可溶性蛋白质含量下降及根系MDA含量的升高 ,从而延迟根系衰老 .同时 ,冬前深耘提高了成穗数及成穗率 ,使产量提高 ,因而在旱地高产麦田应提倡冬前深耘断根 .图 5表 1参 10
The effects of deep root cutting on root senescence and yield of post-flowering wheat in dry land were studied under field conditions of dry land. The results showed that root cutting was the best in winter, Secondly, the effect of deep root pruning was the worst in winter and in early stage, and the deep root pruning in winter could delay the activities of post-anthesis root activity, the activities of SOD and CAT, the content of soluble protein in roots and the content of MDA in roots, Root aging.At the same time, deep winter before winter to increase the number of ears and into a percentage of spike, so that the yield increased, so in arid high yield wheat field should be promoted before winter deep rooting.