AMF接种与作物根系分隔方式对紫色土上间作大豆生长及磷素吸收的影响  

Effect of AMF Inoculation and Root Separation on Plant Growth and Phosphorus Accumulation in Soybeans Growing on Purple Soil under Intercropping Conditions

作　　者：贾广军[1] 柳勇[2] 谷林静[1] 张乃明[1] 侯增龙 段红平[1] 夏运生[1] 

机构地区：[1]云南农业大学资源与环境学院,云南昆明650201 [2]广东省生态环境与土壤研究所,广东广州510650

出　　处：《大豆科学》2015年第3期436-441,448,共7页Soybean Science

基　　金：国家自然科学基金(41161041)

摘　　要：比较了不同丛枝菌根真菌(Arbuscular mycorrhizal fungi,AMF)接种状况[不接种(NM)、接种Glomus mosseae(GM)、接种Glomus etunicatum(GE)]和玉米/大豆间作体系不同根系分隔方式(不分隔,隔尼龙网,隔塑料布)对大豆植株生长及磷素吸收累积的影响。结果表明:接种GM和GE处理下的间作大豆根系侵染率在不同根系分隔方式之间无显著差异,接种AMF抑制了间作大豆根系的伸长,其中接种GM处理能使大豆生物量显著提高,并在根系不分隔处理下使大豆对磷素吸收较多而生长较好,接种GE真菌则不能促进大豆对磷素的积累。间作体系不同根系分隔方式对大豆的影响也不同,其中大豆的根系长度在隔塑料布处理下最短,大豆生物量在根系分隔处理下均大于不分隔处理,根系不分隔处理能够较好的促进大豆对磷素的积累。所有复合处理中,以GM-不分隔处理组合对间作大豆的生长及磷素累积的促进作用最好。Soybeans are often at a competitive disadvantage condition in the maize / soybean intercropping system. A pot experiment was conducted to study the possibility of enhancing phosphorus（ P） uptake efficiency of intercropping soybeans through inoculating with arbuscular mycorrhizal fungi（ AMF）,and to provide scientific basis for the P management of soybean production in purple soil. The plant growth and P uptake by intercropped soybeans on purple soil were studied. The intercropping maize and soybean roots were separated by different conditions（ not separated,nylon net separated,plastic cloth separated）and three different kinds of inoculation status !none-mycorrhizal（ NM）,Glomus mosseae（ GM）,Glomus etunicatum（ GE） ＂.The results showed that the mycorrhizal colonization rate of intercropping soybean roots under inoculation with GM or GE had no significant difference among different roots barriers. AMF inoculation inhibited the roots elongation of intercropping soybean,and GM inoculation could significantly improve the soybeans biomass,as well as make the soybeans uptake more P and grow better when the roots was not separated. While GE inoculation could not promote the P accumulation in soybeans. The effects of different roots separation on soybean was also different respectively. The soybean roots length under the plastic cloth treatment was the shortest,and soybean biomass under roots separation was greater than the treatment of the roots not separated. Without roots separated treatment,it could improve the P accumulation in soybeans. In all treatments,the treatment of GM inoculation and roots not separated was the best one for intercropping soybean plants growth and P accumulation.

关 键 词：丛枝菌根真菌(AMF) 紫色土 间作大豆 根系分隔 磷 

分 类 号：S565.1[农业科学—作物学]