杨农间作田的光强和土壤水分状况及其对农作物的影响  

Light Intensity, Soil Water Content and Crop Output under Popar-crop Intercropping System

作　　者：裴保华[1] 贾渝彬[1] 王文全[1] 袁玉欣[1] 张振江 

机构地区：[1]河北农业大学林学院,保定071001 [2]河北省大名县林业局,大名056900

出　　处：《河北农业大学学报》1998年第2期28-33,共6页Journal of Hebei Agricultural University

基　　金：世界银行贷款国家造林项目;河北省首届自然科学基金

摘　　要：试验选择株行距3m×28m，10～11a的杨农间作田，研究其光强和土壤水分空间分布与农作物生长发育的关系。结果表明，间作田林冠下和林冠外的光强分别为全日照的36．4％和74．8％；行中为80.2％。林冠下和林冠外的土壤含水率分别为行中的62．63％～67．71％和88．88％～73．73％。由于光照不足和水分胁迫，降低了作物的株高和叶面积，使花生和小麦的平均产量比对照田分别降低22．3％和19．9％。The reationship between light intensity and soil water with crop growth and development was carried out under poplar-crop intercropping System, in which tree row spacings 3m × 28m and tree age was 10 ~ 11a. The results demonstrated that light intensties comparing with the control land,were 36.4% below tree crown, 74. 8 % out of tree crown and 80. 2 % in the middle of tree rows; soil water contents below tree crown were 62. 63 % ~ 67. 71 %, and out of tree crown 73 .73% ~88. 88% of that in the middle of tree on respectively. Compared with the control land, crop heights and leaf area decreased, and the outputs of peanut and wheat reducedby 22. 3 % and 19. 9% respectively under intercropping system because of light deficiency and waer stress.

关 键 词：杨农间作 混农林业 光强 土壤水分 

分 类 号：S752.536[农业科学—森林经理学]