| 土壤深耕对冬小麦根系在土壤剖面分布的影响 |
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| 引用本文： | 雷友,曹国鑫,牛新胜,张宏彦.土壤深耕对冬小麦根系在土壤剖面分布的影响[J].现代农业科技,2011(8):272-273. |
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| 作者姓名： | 雷友 曹国鑫 牛新胜 张宏彦 |
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| 作者单位： | 1. 中国农业大学资源与环境学院,北京,100193
2. 中国农业大学曲周实验站 |
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| 摘 要： | 随着耕作种植制度的改变,旋耕已成为中国北方冬小麦生产的主要耕作整地方式。常年以旋代耕,使耕层下面形成了一个比较坚硬的犁底层,影响作物根系发育、下扎,最终造成作物减产。对河北省曲周县的曲周县-中国农业大学"双高"基地2个采用不同耕作方式(旋耕和深耕)的麦田中0～100 cm土壤剖面小麦根系分布状况进行研究,结果表明:深耕田小麦根系数量较旋耕田块高76.6%,深耕田块耕层以下土壤剖面(15～100 cm)中根系数量是旋耕田的1.22倍。
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| 关 键 词： | 冬小麦 根系 旋耕 深耕 土壤剖面 |
Influence of Deep Tillage on Distribution of Wheat Root System in Soil Profile |
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| Authors: | LEI You CAO Guo-xin NIU Xin-sheng ZHANG Hong-yan |
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| Institution: | (1 College of Resources and Environmental Sciences,China Agricultural University,Beijing,100193;2 Quzhou Experimental Station,China Agricultural University) |
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| Abstract: | With the development of farming system,rotary tillage(RT)has become the most popular tillage system in winter wheat production system in North China.Continuous rotary tillage caused a hard soil layer under the topsoil which restricted growth and penetration of root into deeper soil,this finally caused yield reduction.Compared the amount and distribution of root in 0～100 cm soil profile in fields with two models of tillage systems used by local farmers,the deep tillage(DT)and rotary tillage(RT),in the Double High Extension and Demonstration Base of Quzhou-China Agricultural University,Quzhou County,Hebei Province.The preliminary results showed that the amount of root in field with DT was 76.6% higher than that in RT,while the amount of root in 15～100 cm soil profile in field with DT was 1.22 times than that of RT. |
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| Keywords: | winter wheat root rotary tillage deep tillage soil profile |
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