【摘要】 为明确种植密度对大麦群体抗倒伏能力和产量的影响,2013—2014年度,在河南省驻马店市,以饲料大麦品种驻大麦8号为试验材料,研究不同种植密度对大麦株高、产量及产量构成因素的影响。结果表明,种植密度对驻大麦8号株高影响差异显著,种植密度过大,大麦群体抗倒伏能力降低。不同种植密度对驻大麦8号产量及构成因素的影响也具显著差异,密度为450万/hm~2时,其有效穗数和产量最高。通过种植密度与产量间函数方程得知,密度在419.57万/hm~2时,产量可达到6 702.61 kg/hm~2。更多还原

【Abstract】 Aimed to determine the effects of planting density on lodging resistance and yield of barley,a field experiment was carried out in Zhumadian City during 2013—2014 with the feed barley cultivar Zhudamai 8 planted at five densities. The results showed that planting density produced a significant effect on plant height; the lodging resistance of Zhudamai 8 declined with increasing planting density,Moreover,planting density also significantly influenced the yield and its components; the spike number and yield were highest when the planting density was 450 × 104plants·hm^-2,In addition,the function equation between planting density and yield was derived; according to it,the planting density of 419. 57 × 104plants·hm^-2could result in the yield of 6 702. 61 kg·hm^-2. Based on the correlation analysis,the yield of Zhudamai 8 was negatively correlated with plant height,but positively correlated with grains per spike and spike number.更多还原