摘要
研究了有限灌溉条件下穴播地膜小麦的产量变化、根系分布、群体动态和源库协调。认为土壤水分下限低于５０％时产量显著下降，相同水分条件下穴播地膜小麦具有明显的增产作用，最高产量所需的土壤适宜水分下限较露地下降１０％。根系分布。
Under limited irrigation, the yield changes and influencing mechanism were studied for spring wheat covered with plastic film. The results revealed that: the yield decreased obviously when soil water content was less than 50% of field capacity. Compared to that without plastic film, the yield increased remarkably under the same irrigation and the soil water required for the highest yield reduced 10%. The difference of root distribution, dry matter accumulation and leaf area and inhibition of Souce and Sink were the key mechanism affecting yield.
出处
《干旱地区农业研究》
CSCD
北大核心
1999年第1期67-71,共5页
Agricultural Research in the Arid Areas
基金
甘肃省"八五"攻关项目
关键词
有限灌溉
地膜小麦
穴播
产量
影响机制
limited irrigation
spring wheat
plastic film mulch
yield
influencing mechanism
