不同种植形式与密度对玉米品种丹玉405产量及光合特性的影响  

Effects of Planting Patterns and Density on Yield and Photosynthetic Characteristics of Danyu 405

作　　者：杨辉[1,2] 景希强[1,2] 葛超[1,2] 赵成昊[1,2] 唐文明[1,2] 

机构地区：[1]丹东农业科学院,辽宁凤城118109 [2]辽宁丹玉种业科技股份有限公司,辽宁凤城118109

出　　处：《作物杂志》2015年第3期142-145,共4页Crops

基　　金：科技部农业科技成果转化资金项目"抗粗缩病粮饲兼用玉米新品种丹玉405的示范与转化"(2013GD2D000092)

摘　　要：以辽宁省主栽玉米品种丹玉405为试验材料,研究不同种植形式与密度对其产量及光合特性的影响。结果表明,以2比空5.70万株/hm2密度种植,产量达到最高,为15 523.8kg/hm2;其次是4比空5.70万株/hm2密度种植,产量为13 776.3kg/hm2。叶向值在4比空4.20万株/hm2密度种植和2比空4.95万株/hm2密度种植的条件下达到较高。叶面积指数和净光合速率随种植密度的增加呈升高趋势,但均在2比空5.70万株/hm2密度种植条件下达到最高值。说明丹玉405采用2比空或4比空5.70万株/hm2密度种植有利于改善群体结构、增加通风透光、提高光能利用率,获得较高经济产量。Danyu 405 is a main maize variety in Liaoning province,which was used as material to study the influence of different planting patterns and density on the yield and photosynthetic characteristics. The results showed that with the planting pattern of 2： 0 and density of 57 000 plants / hm^2,it reached the highest yield of 15 523. 8kg /hm^2; Secondly,by the planting pattern of 4： 0 and density of 57 000plants/hm^2,the yield reduced to 13 776. 3kg /hm^2. The leaf orientation value was higher by the condition of the planting pattern 4 ： 0 with a density of 42 000 plants / hm^2 and the planting pattern of 2： 0 with a density of 49 500 plant / hm^2. Leaf area index and net photosynthetic rate showed an increased trend with the increase of planting density,and both were the highest under the pattern of 2： 0 and density of 57 000 plant / hm^2. It was proved that the planting pattern of 2 ： 0 or 4 ： 0 with adensity of57 000 plants / hm^2 could improve population structure,increase ventilation and light penetration and improve the light use efficiency to achieve the higher economic yield for Danyu 405.

关 键 词：丹玉405 玉米 产量 种植形式 种植密度 光合特性 

分 类 号：S513[农业科学—作物学]