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。
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.
出处
《现代农业科技》
2011年第8期272-273,共2页
Modern Agricultural Science and Technology
关键词
冬小麦
根系
旋耕
深耕
土壤剖面
winter wheat
root
rotary tillage
deep tillage
soil profile
