摘要
针对辽宁省中北部地区土壤耕层变浅、犁底层坚硬的问题,以当地习惯的耕作方式秋季旋耕为对照,设置苗期垄沟深松30 cm、秋季翻耕25 cm、秋季深松30 cm 3种耕作方式,分析各处理对土壤水分及玉米生长发育的影响。研究结果表明:翻耕或深松处理均提高土壤含水量,其中以秋季深松30 cm和秋季翻耕25 cm的保墒效果最佳;翻耕或深松处理均增加了叶面积、根冠比、百粒重、产量,降低了倒伏率和空秆率,其中以秋季翻耕25 cm效果最佳。在研究设定的3种耕作措施中,以秋季旋耕耙地的基础上再翻耕的耕作方式比较适宜。
The characters of Liaoning province middle and western areas are that soil layer shoal hard. According to the characters, 3 tillage managements were designed to study effects of different ments on soil moisture and development of maize. CK is the rotary stage, mentfl tillage, the and plow pan is tillage manageothers are sub-soiling plowing 25 cm and sub-soiling 30 cm. The results showed that soil water contents of different in the seeding tillage managewere all higher than CK. Among of which the sub-soiling 30 cm and the plowing 25 cm in the fall were more significant. All the tillage managements increased the leaf area, the root/shoot ratio, the 100-seed weight and the yield, reduced the lodging rates and barrenessing rates, the plowing 25 cm in the fall is the best. The plowing 25 em in the fall is the best is obviously superior to that of other tillage managements.
出处
《玉米科学》
CAS
CSCD
北大核心
2009年第6期76-78,81,共4页
Journal of Maize Sciences
基金
国家粮食丰产科技工程(2006BAD02A15)
关键词
玉米
耕作措施
土壤水分
Maize
Tillage managements
Soil water content
