干旱地区农业研究Issue(4)：66-72,7.
秸秆覆盖和根系互作对间作玉米生理特性及产量的影响
Effects of straw mulching and root interaction on intercropped maize physiological characteristics and yield
摘要
Abstract
A pot experiment was conducted to study the effect of different straw mulching levels and root interaction in maize/soybean intercropping system on maize .The results showed that straw mulching and root interaction increased the green leaf area per maize plant at maturity stage and the chlorophyll content of different growth stages ,and the effect of root interaction was enhanced with the increase of straw mulching level .The plant water content and the root bleeding sap of maize at maturity stage were significantly affected by mulching ,but not affected (P>0 .05) by root interaction . Mulching and root interaction increased the photosynthetic rate ,stomatal conductance ,transpiration rate of maize ,and reduced the intercellular CO2 concentration .With the same root separation ,the differences between the treatments T1 and T0 were significant .Mulching and root interaction improved maize yield components ,and increased biological and eco-nomic yields per plant at maturity stage .Correlation analysis revealed that the green leaf area per maize plant ,the chloro-phyll content ,the root bleeding sap rate ,and the photosynthetic rate were all linearly positive correlated with maize yield .In conclusion ,the mulching and root interaction improved maize physiological characteristics and increased yield . The beneficial effect of root interaction was enhanced with the increase of the straw mulching level .关键词
秸秆覆盖/玉米/大豆间作/根系互作/叶绿素/光合特性/产量Key words
straw mulching/maize/soybean intercropping/root interaction/chlorophyll/photosynthetic characteris-tics/yield分类
农业科技引用本文复制引用
张向前,卞新民,黄国勤,赵其国..秸秆覆盖和根系互作对间作玉米生理特性及产量的影响[J].干旱地区农业研究,2013,(4):66-72,7.基金项目
国家自然科学基金重点项目 （）
