春小麦高矮杆混播间种增产机理研究  

STUDY ON MECHANISM OF YIELD EFFECT OF SPRING WHEAT VARIETIES WITH DIFFERENT HEIGHT GROWN IN MIXING OR INTERCROPPING

作　　者：朱万德[1] 张树光[1] 韩万双[1] 

机构地区：[1]黑龙江八一农垦大学植物科技学院,黑龙江省友谊农场

出　　处：《黑龙江八一农垦大学学报》1996年第4期13-20,共8页journal of heilongjiang bayi agricultural university

基　　金：国家"八五"攻关课题

摘　　要：将生育期可满足同期收获而株高相差较大的不同春小麦品种按设计比例混种或间种，４年１２点试验结果表明：三种混、间种群体具显著增产效果，比单一品种群体对照稳定增产７６％～１５．０％，增产机理为，改变群体常处于超光饱和点的旗叶层＂受光面＂为可逐层利用透射光及衍射光的旗叶＂受光体＂，同时，由于改良群体打破了单一群体旗叶层的郁闭状态，使下部各叶层通风透光状况显著改善，进一步发掘了下部叶片可利用的同化潜力。Several spring wheat varieties with same mature time and different height were grown in mixing or intercropping.The research that were carried out in 12 plots in 4 years indicated that the three improved populations made higher yield significantly and the average output per hectare increased7.6%-15.0% than the sigle variety populations.It can be due to the changing of flag leaves'distribution from the'light accepting plane'of uniform variety populations to the'light accepting stereoscopic'which could share the transmission light and the diffraction light of the improved populations. In addition,Since the compact conditions of the single variety population's flag leaves were broken,the ventilate and illumination conditions whould be benefited more, thereby the assimilation ability of the belower leaves could be Strengthened.

关 键 词：春小麦 群体结构 光合效率 混播 高矮秆 

分 类 号：S512.104[农业科学—作物学]