玉米/大豆间作系统的作物资源竞争  

Resource competition in maize /soybean intercropping system

作　　者：吕越[1,2,3] 吴普特[1,2,3,4] 陈小莉[2,3,4] 王玉宝[1,2,3,4] 赵西宁[1,2,3,4] 

机构地区：[1]西北农林科技大学水利与建筑工程学院,陕西杨凌712100 [2]西北农林科技大学中国旱区节水农业研究院,陕西杨凌712100 [3]国家节水灌溉杨凌工程技术研究中心,陕西杨凌712100 [4]中国科学院水利部水土保持研究所,陕西杨凌712100

出　　处：《应用生态学报》2014年第1期139-146,共8页Chinese Journal of Applied Ecology

基　　金：国家科技支撑计划项目(2011BAD29B09);教育部;国家外国专家局"111"计划项目(B12007);西北农林科技大学青年学术骨干项目;西北农林科技大学基本科研业务费项目;西北干旱半干旱农业区大学农业科技服务模式关键技术集成与示范项目(2013BAD20B03)资助

摘　　要：通过分析不同分隔方式下[地上地下均不分隔（T1）、地上地下均分隔（T2）、仅地下分隔（T3）、仅地上分隔（T4）]玉米／大豆间作系统的土壤储水量、作物生长发育、生物量及产量，研究了间作作物间的资源竞争．结果表明：T1中玉米行120cm土层平均土壤含水量比其他处理低3．1％-12．9％，大豆行比其他处理低2．8％～12．5％．与T1相比，T2、T3和T4的玉米生育进程均有所推后，株高、叶面积、生物量累积、籽粒产量及产量构成因素均降低；大豆则与之相反．综上，玉米／大豆间作系统作物生长和产量的变化是由于地上部与地下部综合作用的结果，且地下部作用大于地上部．The soil water storage, growth development, biomass and yield in maize/soybean inter- cropping system under different separation methods were measured to analyze the resource competi- tion of the intercropping crops. The treatments included no shoot or root separation （ T1 ）, shoot and root separation （T2 ）, only root separation （T3 ）, and only shoot separation （T4 ）. Results indicated that compared to others, the average soil moisture content in the 0-120 cm soil layer decreased by 3.1%-12.9% in maize line, and by 2.8% -12.5% in soybean line for T1. Compared to T1 , maize growth stage in T2, T3 and T4 came late, and the plant height, leaf area and cumulative total biomass, yield and yield components all decreased, while the trends found for soybean were the opposite. In summary, the changes of crop growth and yield in the maize/soybean intercropping system were driven by the interactions of above- and below-ground parts, and the below-ground part played a more important role.

关 键 词：间作 分隔方式 地上部作用 地下部作用 产量 

分 类 号：S513[农业科学—作物学] S565.1