摘要
针对辽西地区土壤耕层变浅和秸秆浅旋还田造成的土壤漏风跑墒等问题,实施秸秆机械化深层还田与常规耕作（CK）对比试验,测定玉米根系生长状况。结果表明,秸秆深层还田能够增强玉米扎根性能,扩展根系分布空间,扎根深度增加5~10 cm,根系分布空间扩大6 000（初生节根）~154 500（次生根）cm3;秸秆深层还田的次生根数目明显高于CK,且CK根系主要分布在10~20 cm土层深度,秸秆深松还田处理根系则集中分布在21~30 cm土层深度;秸秆深层还田处理与CK相比玉米产量提高18.16%,差异显著。
In view of the problems of cultivated horizon being shallow and the soil moisture being lost with shallow rotary tillage in western region of Liaoning province,the contrasting test between corn straw deep returning and traditional tillage was carried out and the corn root system was measured and analyzed.The results showed that the striking root ability of corn can be enhanced and the root distribution can be extended.The striking root depth increased 5-10 cm and the root distribution extended 6 000（fibrous root）-154 500（secondary root）cm3.The amount of secondary root of straw deep returning is higher than traditional tillage and the root system distribution was among 10 20 cm for traditional tillage but 20-30 cm for straw deep returning.Compared with traditional tillage,the corn yield with straw deep returning increased 18.16%,and the difference between straw deep returning and traditional tillage was very remarkable.
出处
《玉米科学》
CAS
CSCD
北大核心
2013年第5期109-112,共4页
Journal of Maize Sciences
基金
"973"项目"粮食主产区农田地力提升机理与定向培育对策"(2011CB10053)
农业部行业(农业)专项资金项目"北方主要作物抗旱节水综合技术研究与区域示范"(200903007-8)
关键词
玉米
根系
秸秆深层还田
产量
Corn
Root system
Deep straw placement
Yield
