江西农业学报Issue(3)：1-5,22,6.
不同种植密度对夏玉米产量、叶面积指数和干物质积累的影响
Effects of Different Planting Densities on Grain Yield, LAI and Dry Matter Accumulation of Summer Maize
摘要
Abstract
The purpose of this research is to explore the effects of different planting densities on the grain yield , LAI and dry matter accumulation of summer maize , and provide theoretical basis and technical support for the further enhancement of per unit ar -ea yield of summer maize.Maize varieties TT 33, TT 55 and ZD 958 were used as experimental materials , and six planting densities (6.00 ×104 , 6.75 ×104 , 7.50 ×104 , 8.25 ×104 , 9.00 ×104 , and 9.75 ×104 plant/hm2 ) were set.The results showed that the grain yield of maize significantly increased with the increase in planting density within limits ;while it gradually decreased with the increase in planting density beyond a certain value .The LAI increased with the increase in planting density , and it reached a peak at silking stage, and then began to reduce .The total dry matter accumulation significantly increased as planting density gradually in -creased.In conclusion, under this experimental field conditions , the appropriate planting densities of TT 33, TT 55 and ZD 958 were about 8.25 ×104, 8.25 ×104 and 7.50 ×104 plant/hm2 respectively.关键词
夏玉米/种植密度/叶面积指数/干物质积累/产量Key words
Summer maize/Planting density/LAI/Dry matter accumulation/Yield分类
农业科技引用本文复制引用
冯尚宗,王世伟,彭美祥,刘宁,赵桂涛..不同种植密度对夏玉米产量、叶面积指数和干物质积累的影响[J].江西农业学报,2015,(3):1-5,22,6.基金项目
2009年山东省农业科技成果转化资金项目“高产多抗广适玉米新品种天泰33技术研究与示范”（20099626）。 （）
