摘要
基于田间试验,研究不同耕作方式对豫东雨养区土壤水分调控效果。试验结果表明,秸秆覆盖还田免耕处理,对夏玉米生长主要根层的土壤水分的调控能力作用较为显著,在连续干旱1个月后(播后30d),0～60cm土壤含水率分别比深耕和深松高19.7%、4.5%,夏玉米单株干物质累积量、群体叶面积指数指标均优于其他2个处理,产量和水分利用效率比深耕处理提高31.2%和16%。
In the rain-fed areas of Henan Eastern Plain,the effect of different tillage methods on soil moisture regulation was studied.The experimental results showed that straw mulch tillage layer of the main root growth of summer maize role of the regulatory capacity of the soil moisture was more significant,continuing drought after a month（after seeding 30 days）,and compared to deep plowing and subsoiling,average soil water content of this treatment in 0~60 cm soil profileincreased by 19.7%,4.5%,respectively.Summer maize dry matter accumulation and leaf area index were better than other two treatments,and yield and water use efficiency increased by 31.2% and 16% than deep plowing treatment.
出处
《灌溉排水学报》
CSCD
北大核心
2012年第4期75-78,共4页
Journal of Irrigation and Drainage
基金
公益性行业(农业)科研专项(200903007-04)
国家科技支撑计划项目(2011BAD16B07
2012BAD04B07)
河南省重大公益性科研项目(091100910100)
关键词
深松
覆盖
夏玉米
雨养区
subsoiling
coverage
summer maize
rain-fed area
