桑树/大豆间作对植物生长及根际土壤微生物数量和酶活性的影响

应用生态学报

桑树/大豆间作对植物生长及根际土壤微生物数量和酶活性的影响

胡举伟¹,朱文旭²,张会慧¹,许楠¹,李鑫¹,岳冰冰¹,孙广玉^1**

(¹东北林业大学生命科学学院, 哈尔滨 150040； ^2中国林业科学研究院林业研究所林木遗传育种国家重点实验室，北京 100091）

出版日期:2013-05-18 发布日期:2013-05-18

Effects of mulberry/soybean intercropping on the plant growth and rhizosphere soil microbial number and enzyme activities.

HU Ju-wei¹, ZHU Wen-xu², ZHANG Hui-hui¹, XU Nan¹, LI Xin¹, YUE Bing-bing¹, SUN Guang-yu¹

(¹College of Life Science, Northeast Forest University, Harbin 150040, China; ^2State Key Laboratory of Forest Genetics and Tree Breeding, Research Institute of Forestry, Chinese Academy of Forestry, Beijing 100091, China)

Online:2013-05-18 Published:2013-05-18

摘要/Abstract

摘要： 利用根系分隔试验的方法，研究了桑树/大豆间作体系中植株生长、根际土壤酶和土壤微生物的变化.结果表明：根系不分隔处理的桑树和大豆的株高、叶片数、根长和根冠比等生长指标均高于塑料膜分隔和尼龙网分隔处理，大豆有效根瘤数较多.不分隔、尼龙网分隔处理的桑树和大豆的根际土壤磷含量比塑料膜分隔分别高10.3%、11.1%和5.1%、4.6%.不分隔和尼龙网分隔处理的桑树和大豆根际微生物数量、微生物多样性和土壤酶活性均高于塑料膜分隔处理.表明桑树和大豆间作具有明显的种间促进效应.

Abstract: A root separation experiment was conducted to investigate the plant growth and rhizosphere soil microbes and enzyme activities in a mulberry/soybean intercropping system. As compared with those in plastic barrier and nylon mesh barrier treatments, the plant height, leaf number, root length, root nodule number, and root/shoot ratio of mulberry and soybean in non-barrier treatment were significantly higher, and the soybean’s effective nodule number was larger. The available phosphorous content in the rhizosphere soils of mulberry and soybean in no barrier and nylon mesh barrier treatments was increased by 10.3% and 11.1%, and 5.1% and 4.6%, respectively, as compared with that in plastic barrier treatment. The microbial number, microbial diversity, and enzyme activities in the rhizosphere soils of mulberry and soybean were higher in the treatments of no barrier and nylon mesh barrier than in the treatment of plastic barrier. All the results indicated that there was an obvious interspecific synergistic effect between mulberry and soybean in the mulberry/soybean intercropping system.

胡举伟1,朱文旭2,张会慧1,许楠1,李鑫1,岳冰冰1,孙广玉1**. 桑树/大豆间作对植物生长及根际土壤微生物数量和酶活性的影响[J]. 应用生态学报.

HU Ju-wei1, ZHU Wen-xu2, ZHANG Hui-hui1, XU Nan1, LI Xin1, YUE Bing-bing1, SUN Guang-yu1. Effects of mulberry/soybean intercropping on the plant growth and rhizosphere soil microbial number and enzyme activities.[J]. Chinese Journal of Applied Ecology.