根际微生态系统理论在我国农业高产高效中的作用——间套种作物种间的根际微生态效应的发现及应用前景

近年来我们通过田间、盆栽、根箱试验对间作套种种间根际相互作用进行了系列研究,并对根际微生态理论在间套作中的应用进行了初步探讨.结果表明,根际效应对间作作物产量优势具有重要贡献,边行增产的84.4%(小麦-玉米)和53.6%(小麦-大豆)中,根际交换作用的贡献分别为37.8和23.2个百分点.

The Role of Rhizosphere Microecology Theory in High Yield and High Efficiency of Agriculture--The Finding of the Rhizosphere Microecology Effect in Intercropping System and the Perspective of it Application

This paper reviewed the interspecific rhizosphere interactions between intercropped species in re-cent years. Main results were: 1) The yields in border rows of intercropped wheat were significantly higherthan that in inner row in the wheat-maize and wheat-soybean intercropping systems, respectively. The con-tribution of the border row yield advantage to total grain yield increase was at least 2/3. 2) The border rowyield advantage of intercropped wheat derived from the differences in interspecific competitiveness, andwheat proved to be more competitive relative to maize and soybean in the two intercropping systems. 3)There was an uptake and growth recovery after harvest of the earlier-maturing species, which made the late-maturing species compensate for impaired early growth once early-maturing species was harvested. 4) Inter-cropping yield advantage in the maize-faba bean depended completely on interspecific root interaction betweenintercropped maize and faba bean.