摘要
本文研究了林网式农林复合系统对冬小麦水分利用效率 (WUE)的影响。结果表明 ,农林复合系统可以提高冬小麦的水分利用效率 ,其日平均水分利用效率较对照提高了 6 3 3 %。小麦水分利用效率也存在着“午休”现象 ,林网可以有效地缓减这一现象。应用主成份分析证明林网提高小麦水分利用效率的主要原因是影响了空气温度、叶温、饱和差和光合强度。
This paper studied the effect of agro\|forestry system with on water use efficiency(WUE) of wheat planted within the shelter belt network. The results showed that within the system,the daily average WUE of wheat was increased 6.33%than CK.The daily course of WUE of wheat showed that,there was a phenomenon of “siesta,”and it can be reduced effectively in the agroforestry system.Proved by the method of PCA,the main causes of WUE increasing in the agroforestry system were air temperature,saturation deficit, leave temperature and photosynthesis rate.
出处
《林业科学》
CAS
CSCD
北大核心
2000年第4期16-20,共5页
Scientia Silvae Sinicae
基金
国家"八五"科技攻关专题!"农林复合生态系统结构与功能研究"
