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Effects of Deep Cultivation root Cutting on Dry Weight of Root System After Anthesis and Yield in Dry Land Wheat of High Yield

Shi Yan Wei Dongbin (Institute of Dry Land Crops,Laiyang Agricultural College,Laiyang 265200) Yu Zhenwen Yu Songlie (Department of Agronomy,Shandong Agricultural University,Taian)  
The effects of deep cultivation root cutting on the dry weight of root system after anthesis and yield have been studied in dry land wheat with high yield.The results are as follows:the best effect obtained from 4 treatments is cultivation root cutting before winter stage,next by the treatment in the starter stage treatment and in control, lastly by the treatment in the before winter stage and starter stage.The deep cultivation root cutting in before winter stage will increase the weight and ratio of root system in middle and lower layer,the results will decrease the root redundancy.Meanwhile,the deep cultivation root cutting in before winter stage will control the maximum total stem number,increase the spike number and the spike number ratio,the ratio of grain yieid coming from the photosynthetic organ transported after anthesis increases,and increase the grain yield.So the technology of deep cultivation root cutting in before winter stage should be spread in dry land wheat of high yield.
【CateGory Index】: S512.101
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