【摘要】 选用两个不同类型大豆品种在吉林省农业科学院大豆研究中心试验地分别采用3个不同密度开展研究,分析密度对其农艺性状、生长期叶面积指数及产量的影响。结果表明,在吉林省中南部地区,分枝型大豆自我调节能力强,对不同种植密度的适应性强,12万～28万株/hm2均能获得较高产量;主茎型大豆品种的适宜密度为12万～20万株/hm2,当达到28万株/hm2时,冠层会出现郁闭现象,产量显著降低。更多还原

【Abstract】 The effection of planting densities of soybean cultivars on agronomic traits,growth leaf area index and yield in the central south of Jilin province were studied using two kinds of cultivars(branching type and main stem type) field experiments method in Soybean Research Center,Jilin Academy of Agricultural Sciences.Results showed that,branching type soybean possessed strong self-adjustment ability and showed fine adaptability to different planting density,high yield could be obtained when the density was 0.12 million to 0.28 million plants per hectare.The optimal planting density of main stem type soybean was 0.12million to 0.20 million plants per hectare,and the plants showed canopy closure and the yield decreased significantly when the density was over 0.28 million plants per hectare.更多还原