山东农业科学2012，Vol.44Issue(5)：23-27,5.
种植密度和行距配置对玉米穗位叶光合特性的影响
Effects of Planting Density and Row Spacing Form on Photosynthetic Characters of Maize Ear Leaf
摘要
Abstract
The chlorophyll content, net photosynthesis rate (Pn), maximum photochemical efficiency of PS II (Fv/Fm) and actual quantum yield of PS II linear electron ($PS II ) were negatively correlated with the density, especially in the late growth stage. The activities of photosynthesis key enzymes (PEPCase and RuB-PCase) performed consistent with them. The results indicated that the high density was unfavorable to photosynthesis of the ear leaves. Under low density, the chlorophyll content, Pn, Fv/Fm, 4>PS]I and the activities of PEPCase and RuBPCase had no significant differences among all row spacing forms; but under middle -high densities, these values of the "80 +40" form were the greatest, particularly at later development stages. So, the photosynthetic capacity of ear leaves could be raised by the optimum row spacing form.关键词
玉米/种植密度/行距配置/穗位叶/光合特性Key words
Maize/ Planting density/ Row spacing form/ Ear leaf/ Photosynthetic performance分类
农业科技引用本文复制引用
刘惠惠,杨吉顺,李耕,刘鹏,董树亭,杨今胜,柳京国..种植密度和行距配置对玉米穗位叶光合特性的影响[J].山东农业科学,2012,44(5):23-27,5.基金项目
国家自然科学基金项目(31071358,30871476) （31071358,30871476）
欧盟FP7国际合作项目(NUE-CROPS 222645) （NUE-CROPS 222645）
国家"十二五"科技支撑计划项目(2011BAD16B14) （2011BAD16B14）
山东省财政支持农业重大应用技术创新课题(2010) （2010）
山东省良种工程玉米课题(2011) （2011）
