在盆栽条件下,采用三因素[Glomus intraradices(BGC B J08),Glomus mosseae (BGC B J08)和Glomus etunicatum (BGC B J08)]、二水平(接种和不接种)试验设计,研究了三种菌根真菌菌种间的相互作用对玉米的生长和磷吸收的效应.结果表明：Gl...
详细信息
在盆栽条件下,采用三因素[Glomus intraradices(BGC B J08),Glomus mosseae (BGC B J08)和Glomus etunicatum (BGC B J08)]、二水平(接种和不接种)试验设计,研究了三种菌根真菌菌种间的相互作用对玉米的生长和磷吸收的效应.结果表明：Glomus属的3种不同菌根真菌对玉米苗期生长的效应存在差异,Gintraradices能显著促进玉米的生长和磷吸收,Getunicatum对玉米的生长表现为显著负效应,***则未表现出显著的效应.***和Getunicatum同时接种在第六周时对玉米生长存在显著的互作效应,但第八周时这种互作消失了.在试验条件下,Gmosseae和***、Gmosseae和***两两之间,以及3种真菌同时接种的时候未表现出显著的互作.以上结果表明,不同菌种之间存在显著的正的作用,不同菌种的菌根效应和相互作用受玉米生育期的影响.
e automatic ultrafilitration device (AUD) can be fractionated largely quantity ofenvironmental nanoparticles (<100 nm),especially soil *** on the physicochemicalproperties and mineral species a of lateritic sai...
详细信息
e automatic ultrafilitration device (AUD) can be fractionated largely quantity ofenvironmental nanoparticles (<100 nm),especially soil *** on the physicochemicalproperties and mineral species a of lateritic sails and gravel soil layers in paleoenvironmental soil profile isseverely *** soil profile of the Taoyuan terrace was employed to demonstrate its different extentsof lateritic *** objectives of this study were to compare the physicochemical properties oflateritic soils and gravel soil layers and identify using conventional and synchrotron X-ray diffraction(XRD) analyses mineral species in nanoparticles separated by AUD *** samples were collectedfrom paleoenvironmental lateritic *** samples were examined using elemental analysis,conventionaland synchrotron XRD analyses,high gradient magnetic separation,separation and collection ofnanoparticles by AUD apparatus,and transmission electron microscopy(TEM).The soil pH,redness index,quantities of free Al and Fe-oxides(Ald and Fed),and clay content of lateritic soils are higher than those ofgravel soil ***,kaolinite,gibbsite,quartz,goethite, and hematite were identified in clay fractionsand nanoparticles饰conventional and synchrotron XRD *** images show presence of hematitenanoparticles on the surf ace coating of kaolinite nanoparticles and aggregated hematite nanoparticlesoverlapping the edge of a kaolinite flake in a size range of 4-7 *** XRD techniques are morestraightforward and powerful than conventional XRD with random powder methods f or identifyingnanoparticles in red soils,particularly for illite,kaolinite,goethite,and hematite *** chemical compositions of clay fractions and red soil features in the Taoyuan terrace,these red soils canbe taken as lateritic red earths or red *** work suggests that physicochemical properties andmineral species of red soil at all depths can shed light on the extent of
暂无评论