%0 Journal Article
%T 砒砂岩与沙混合比例对春玉米冠层结构及其光合特性的影响<br>Effects of Mixing Ratio of Pisha Sandstone to Sand on Canopy Structure and Photosynthetic Characteristics of Spring Maize
%A 孙婴婴
%A 韩霁昌
%A 张
%A 扬
%A 王欢元
%A 张海欧
%A 赵
%A 宣
%J 西北农业学报
%D 2017
%R 10.7606/j.issn.1004-1389.2017.03.007
%X 为探明砒砂岩与沙的不同复配比例对春玉米冠层结构、光合特性与最终产量的影响，在毛乌素沙地设置砒砂岩与沙体积比分别为1∶1、1∶2和1∶5的小区试验，于2014―2015年测定春玉米株高、叶面积指数、冠层开度、穗位叶净光合速率、产量以及土壤含水量动态变化。结果表明，1∶1和1∶5两种复配土与1∶2比例复配土相比，所种植的春玉米在12叶期、抽雄期、乳熟期具有较低冠层开度，在抽雄期具有较高的叶面积指数，冠层结构更为优化，同时1∶2复配土春玉米穗位叶净光合速率在各生育期均具有一定优势，这与该比例复配土在0~120 cm深度土层内更佳的保水性具有一定关系。冠层结构与光合生理上的优势导致1∶2复配土春玉米百粒质量显著高于1∶1和1∶5复配土，产量最高，是适于在毛乌素沙地推广应用的砒砂岩与沙复配比例。<br>To explore effects of different mixing ratios of Pisha sandstone to sand on canopy structure,photosynthetic characteristics and yield in maize,we conducted plot experiment of different mixing volume ratios of Pisha sandstone to sand such as 1∶1,1∶2,1∶5 in Mu Us Desert,and measured changes of plant height,LAI,DIFN,Pn of ear leaf in spring maize as well as soil moisture condition.The results showed that 1∶2 mixed cases of spring maize presented lowest DIFN at 12 leaf stage,tasseling stage and milky-ripe stage,and highest LAI at tasseling stage,it had more optimal canopy characteristics compared with 1∶1 and 1∶5 mixed cases; 1∶2 mixed case also had more certain advantage on Pn of ear leaf than other mixed case,which might be correlated with the better capacity in soil water retaining at the depth of 0-120 cm.Better canopy characteristics and photosynthetic characteristics of maize in 1∶2 mixed case had higher 100-grain mass and yield,compared with 1∶1 and 1∶5 mixed cases,this could be applied better in Mu Us Desert in the future.
%K 砒砂岩与沙复配成土 春玉米 冠层特征 光合特征&lt
%K br&gt
%K Soil mixture of Pisha sandstone with and sand Spring maize Canopy characteristics Photosynthetic characteristics
%U http://xbnyxb.alljournals.cn/ch/reader/view_abstract.aspx?file_no=20170307&flag=1