大垄双行疏密种植对玉米冠层结构及产量影响的研究  

Effect of Big Ridge Double Line Spacing Plantation on Canopy Structure and Yield of Maize

作　　者：牛世伟[1] 安景文[1] 刘慧屿[1] 何志刚[1] 蔡广兴[1] 叶鑫[1] 张鑫[1] 董环[1] 隋世江[1] 

机构地区：[1]辽宁省农业科学院植物营养与环境资源研究所,沈阳110161

出　　处：《玉米科学》2014年第5期98-103,共6页Journal of Maize Sciences

基　　金：公益性行业(农业)科研专项"现代农作制模式构建与配套技术研究与示范"(201103001);"昌图农业购买性资源适量化投入关键技术集成与示范"(2012BAD14B04)

摘　　要：在大田试验条件下,以耐密品种郑单958为试验材料,在相同密度下研究常规种植、三比空、大垄双行和大垄双行疏密4种种植方式对春玉米产量形成及其冠层结构特征的影响。结果表明,田间种植方式的改变可以促进良好冠层结构的发育,影响玉米群体产量及其生长发育特征,具体表现主要在吐丝期之后。耐密品种以大垄双行疏密种植方式为宜,从吐丝期开始,叶面积指数增长最快,玉米叶片的光合性能最强,叶片功能期延长,积累最多干物质,产量为12 449.74 kg/hm2,比对照增加32.67%。大垄双行疏密种植方式对棕壤气候区可提高玉米单产,对玉米生产能力的提升具有十分重要的作用。Used Zhengdan958 as the experimental material, the effects of four planting methods （equal line, three ratio space, big ridge double line and big ridge double line spacing plantation） on maize yield formation and canopy structure characteristics were studied at the same density under field conditions. The results indicated that high-density variety was suitable for using the method of big ridge double line spacing plantation, which manifested as the fastest increase of leaf area index, the strongest improvement of photosynthetic efficiency, the longest prolon- gation of leaf functional period and the most accumulation of dry matter in maize from the beginning of silking time. The yields were 12 449.74 kg/ha, with an increasing rate of 32.67% compared with the control. The current year re- sults of field experiment had shown that big ridge double line spacing plantation was an optimal planting method to improve maize yield in brown soil climatic region and to enhance maize nroductivitv.

关 键 词：玉米 种植方式 冠层结构 产量 

分 类 号：S513.047[农业科学—作物学]