等高固氮植物篱中套种桑树的桑叶产量及生物产量  

LEAF YIELD AND BIOLOGICAL PRODUCTION OF MULBERRY PLANTED IN CONTOUR HEDGEROWS OF NITROGEN-FIXING PLANTS

作　　者：张炎周[1] 唐亚[1] 陈克明[1] 孙辉[1] 

机构地区：[1]中国科学院成都生物研究所,成都610041

出　　处：《应用与环境生物学报》2001年第4期303-307,共5页Chinese Journal of Applied and Environmental Biology

基　　金：国际山地中心(ICIMOD)ATSCFS(1 991~ 2 0 0 1 )项目;四川省青年科技基金;中国科学院成都地奥科学基金资助项目

摘　　要：对套种在等高固氮植物篱中的桑树 (植物篱桑 )和地埂桑全年的桑叶产量和生物产量、树势、桑叶营养成分等进行了研究 ,结果表明 ,植物篱桑各季的桑叶产量和单叶面积分别比地埂桑高 114.3%～ 180 .6 %、7.8%～ 5 6 .6 % ;全年株总片叶量、株冬条重、株枝叶总量分别比地埂桑高 15 7.0 %、2 94.3%、186 .6 % ;单叶重除晚秋桑比地埂桑高4.1%外 ,其它各季高 2 7.6 %～ 6 6 .5 % ;植物篱桑的树势极显著优于地埂桑 ,其有效条数、平均有效条长、平均条粗和平均每m条着叶数分别比地埂桑高 84.8%、2 9.5 %、39.0 %、15 .5 % ;植物篱桑下的土壤有机质和全氮含量高于地埂桑 ;二者桑叶的营养成分高低则相差不大 .表 5参The leaf yield and biological production of mulberry planted in contour hedgerows (MIH) and planted on land ridge (MLR) were studied. The results showed that MIH's leaf yield perplant and Per leaf area increased by 114.3%～180.6% and 7.8%～56.6% over those of MLR in each silkworm raising season, respectively. Compared to the control, the total annual leaf yield perplant, winter weight of branches perplant and biomass production increased by 157.0%, 294.3% and 186.6%, respectively. Fresh leaf weight perplant increased by 4.1%～66.5%. The growth status of MIH was better than that of MLR. Mean number of effective branches, mean length of effective branches, mean diameter of branches, and mean number of leaves per meter of branch of MIH increased by 84.8%, 29.5%, 39.0% and 15.5% over those of MLR, respectively. However, there was no significant difference in nutrition content of leaves between MIH and MLR. The organic matter and total nitrogen in soil under the MIH were higher than those under the MLR.Tab5, Ref16

关 键 词：等高固氮植物篱 桑叶产量 生物产量 桑树 套种 

分 类 号：S888[农业科学—特种经济动物饲养]