摘要
以郑单958为试验材料,比较了不同密度条件下玉米叶面积指数,干物质积累的动态变化,及密度对玉米籽粒产量的影响。试验结果表明,4.5万株/hm2条件下,叶面积指数低,虽然单株干物质积累量最大,但群体干物质积累量不足;9万株/hm2条件下,叶面积指数下降较快,不利于干物质的积累;6.75万株/hm2条件下,叶面积指数前期上升快,下降慢,后期的干物质积累量多用于籽粒生长,产量最高。
In this paper,comparison the different density under of leaf area index,dry matter accumulation of dynamic change,and the influence of the density of maize grain yield of zhengdan958. The result show that leaf area index was low,dry matter accumulation was largest,but insufficient amount of population dry matter accumulation under the 45 000 plants / ha. Leaf area index was falling faster,not condition to the accumulation of dry matte in 90 000 plants / ha. In this experiment,the maximum yield is the density of 67 500 plants / ha,leaf area index early was rising fast,slow down,more dry matter accumulation in the late for grain growth,the highest yield.
出处
《辽宁农业科学》
2015年第4期72-75,共4页
Liaoning Agricultural Sciences
