摘要
玉米秆留高茬并用麦秸进行秋冬覆盖，能有效拦蓄秋冬降水提高向日葵出苗率。其保水效果，播期＞现雷期＞花期。保蓄水分、平抑地温和增产效果均大于不留茬覆盖和播后覆盖处理，使向日葵含油率和产量比露地提高１．７％和４７．３％，比播后覆盖分别提高０．８％和２５．２％。
The experiment results showed that it could effectively conservate water in soil in Autumn and Winter by kept high stubbles of maize straw and mulched with wheat straws. The effect of treat time on soil moisture conservation was sowing stage>bud stage >flowering stage. The water conservation, reducing the change of the field temperature and increasing field production effect were higher than not kept high stubbles and mulched after sowing. The sunflower oil content and yield were increased by 1.7% and 47.3% compared with the control, and by 0.8% and 25.2% compared with mulched after sowing.
出处
《中国油料作物学报》
CAS
CSCD
北大核心
1998年第2期55-58,共4页
Chinese Journal of Oil Crop Sciences
基金
国家"八五"旱农攻关项目
关键词
向日葵
留茬
秸秆覆盖
旱地
Keeping stubbles Straw mulching Rainfed land Sunflower
