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作 者 ：孟平 宋兆民 张劲松 陈建业

期 刊 ：林业科学 1997年 33卷 zk1期 页码：14-19

关键词：农林复合系统；光能利用率；

Keywords:Agroforestry System, Solar energy utilization efficiency (SUE),

摘 要 ：对河北省饶阳县农林复合系统实验区的光能利用率进行了初步研究，结果表明：(1)系统建成后(以1992年为代表)的光能利用率，比建成前(以1984年为代表)的要高62．3％；(2)林网保护下的梨粮间作模式的光能利用率要比一般林网高10.3％；(3)系统的光能利用率比旷野农田要高25.0％，系统内的小麦光能利用率要旷野农田小麦要高1O.4％；(4)系统的多层次结构及空间的充分利用是光能作用率提高的基础；系统的抗逆功能增强(如防冻害、于热风及风蚀)以及水分利用效率的提高等综合利用是农林复合系统比单一的农业系统光能利用率提高的重要原因。

Abstract:In this paper，the solar energy utilization efficiency (SUE) of Agroforestry System was stud-ied in Raoyang County，Hebei Province．The initial resultS showed：(1)The SUE of Agroforestry System in 1992 was 62.3％ much higher than in 1984 (Con-sidered that 1984 and 1992 were the representive year before and after which the Agroforestry Sys-tern had constructed respectively)．(2)The value of SUE in model of pear intercroping with crops protected by sheltemets was 10.3％ higher than that of common shelternets．(3)The value of SUE of Agroforestry System was 25.0％higher than that of the unprotec-ed field (CK) and the SUE of wheat in Agroforestry System were 10.4％higher than that in theunprotected field．(4) Agroforstry System could raise solar energy utilization efficiency (SUE) comparing with the single Agricultral System，which based on making full utilization of multiple layered and spacialstructure，and mainly resulted from that water utilization efficiency and resistence to natural adversi-ty (such as freeze injure，dry-hot wind(weather) and wind erosion) could be raised in Agrofostry System．

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