杨稻复合系统的胁地因子分析  

Analysis on Factors Influencing Rice Yield in Poplar-crop Systems

作　　者：米方秋[1] 徐锡增[1] 方升佐[1] 唐罗忠[1] 杨万霞[1] 

机构地区：[1]南京林业大学森林资源与环境学院,江苏南京210037

出　　处：《林业科技开发》2008年第4期56-58,共3页China Forestry Science and Technology

基　　金："十一五"国家林业科技支撑计划(编号:2006BAD03A1505)

摘　　要：通过对江苏省泗洪县城头林场2 a、3 a和4 a生杨树与水稻复合经营模式下的小气候因子以及水稻产量的测定分析知,水稻产量随着林龄、冠幅、树高增加而减少,随着日照时数、光合速率的增加而增加。林木树高是影响林带内水稻产量的最主要影响因子。The factors influencing rice yield were analyzed in the poplar-rice systems including two-year old, three-year old and four-year old poplar trees in Chengtou forest farm, Sihong county, Jiangsu, China. The results showed that the rice yield in the systems decreased with the increases of trees age, trees crown and trees height, while increased with increases of sunshine hour and photosynthetic rate. The trees height was a major limitation for the rice yield in the poplar-crop systems.

关 键 词：杨农间作 影响因子 Pearson相关分析 

分 类 号：S511[农业科学—作物学] O212.4[理学—概率论与数理统计]