不同密度间作大豆的光合生理响应  

The Photosynthetic Physiology Responses of Intercropping Soybean Under Different Planting Density

作　　者：谭春燕 刘作易[2] 朱星陶 杜月红 黄建斌 

机构地区：[1]贵州省油料研究所,贵州贵阳550006 [2]贵州省农业科学院,贵州贵阳550006 [3]贵州省旱粮研究所,贵州贵阳550006

出　　处：《贵州农业科学》2012年第8期49-52,共4页Guizhou Agricultural Sciences

基　　金：国家"973"计划项目子课题"作物多样性群落结构对产量与品质的影响及其机理"(2011CB100402)

摘　　要：为提高间作大豆产量,以贵州自育大豆新品种黔豆7号为试验材料,在玉米间作不同种植密度大豆的条件下,研究了大豆光合生理指标的影响。结果表明:1)各处理间玉米光合速率、蒸腾速率、气孔导度和胞间CO2浓度差异不大,而大豆光合生理各指标之间的差异显著,在一定范围内,大豆光合速率会随着密度的增加而增加,但达到一定程度,反而会下降,其余指标随密度呈现不规则变化;2)处理4即16.7万株/hm2的光合速率最高,该密度条件有助于构建合理的间作大豆群体,能够提高大豆产量。In order to improve the intercropping soybean production,the effects of different planting densities on photosynthetic characteristics of soybean cultivar of Qiandou 7 under intercropping with maize were studied.The results showed that： 1） Under different density of intercropping soybean,the photosynthetic rate,transpiration rate,stomatal conductance and intercellular CO2 concentration between each treatment had no significant difference to corn,but had significant difference to soybean.The photosynthetic rate increased with the increase of density in a certain extent,while decreased if exceeded,other indexes had no regular variation with the change of density.2） The treatment 4（167 000 plants/hm2） had the highest photosynthetic rate,and was conducive to the construction of rational soybean group and thus enhanced soybean yield.

关 键 词：间作大豆 密度 光合生理 玉米 

分 类 号：S565.104.4[农业科学—作物学]