塔里木大学学报

作物种植密度与产量密切相关 ,是农业生产中重要技术因素之一。本试验以杂交油葵G10 1为材料系统研究了产量与密度的关系。结果表明 ,单株生物产量、群体生物产量、单盘籽粒产量和群体籽粒产量均随密度的升高呈规律性变化 ,单株生物产量和群体生物产量分别符合W =1 (a +bx)和W =x (a +bx)模式 ,单盘籽粒产量和群体籽粒产量分别符合W =aebx和W =axebx模式。株高、千粒重、盘径、茎粗符合Y =a +bx方程 ,秕粒率符合Y =a +bx +cx2 的模式。试验得出最高群体生物产量为 2 36 91.0 6kg hm2 和最大群体籽粒产量为 374 0 .0 0kg hm2 ,最适密度为 6 5 75 9.19株 hm2 。

Intimacy relation of plant density and yield is an important technical factor in Agriculture product, A Study showed that relation between plant density and a plant biological yield and population biological yield could be expressed by equations W=1/(a+bx) and W=x/(a+bx) respectively; a plant seed yield and population seed yield are expressed by equations W=ae bx and W=axe bx respectively; plant height, plant diameter and stem width are all expressed by Y=a+bx; shriveled seed rate is expressed by Y=a+bx+cx2. The maximum populations biological yield and seed yield were 23691.06kg/hm2 and 3740.00 kg/hm2 respectively; The suitable density is 65759.19plant /hm2.