种植密度对饲用高粱农艺性状、生物产量和品质的影响  

Effect of planting density on agronomic characters,biological yield and quality of forage sorghum

作　　者：康晨 谭燕 罗峰 孙守钧 Kang Chen;Tan Yan;Luo Feng;Sun Shoujun(College of Agronomy and Resources Environment,Tianjin Agricultural University,Tianjin 300392,China)

机构地区：[1]天津农学院农学与资源环境学院,天津300392

出　　处：《天津农学院学报》2023年第1期22-26,31,共6页Journal of Tianjin Agricultural University

基　　金：农业农村部“引进国际先进农业科学技术”项目(2016-X09)。

摘　　要：通过田间随机区组试验,分析了不同种植密度(9万、12万、15万和18万株/hm^(2))对饲用高粱品种‘TS-185’的农艺性状、生物产量及品质的影响。结果表明:饲用高粱分蘖数、主茎茎粗、主茎和分蘖的株高、茎秆鲜重、茎秆干重及籽粒蛋白含量均随种植密度的增加呈先升高后降低的趋势,主茎株高和籽粒蛋白含量的变化在各处理间有显著差异;当种植密度最大时,分蘖茎粗值最大,主茎和分蘖的穗长、主茎穗鲜重、千粒重、穗干重及茎秆粗蛋白均随种植密度的增加呈明显下降趋势,其中主茎穗鲜重的变化具有显著差异,表明种植密度对不同农艺性状的影响具有显著性差异;当种植密度为9万株/hm^(2)和12万株/hm^(2)时,产量和品质均达到较高水平。Through random field trials,the effect of different planting densities(90000,120000,150000 and 180000 plants/hm^(2))on the agronomic characteristics,biological yield and quality of forage sorghum variety‘TS-185’were analyzed.The results showed that the number of forage sorghum tillers,the diameter of the main stem,the height of the main stem and tillers,the fresh weight of the stem,the dry weight of the stem and the grain protein content increased first and then decreased with the increase of the planting density.There are significant differences between the treatments on the height of main stem and the change of grain protein content;the stem thickness of the tiller was the largest when the density was the largest;the ear length of the main stem and that of the tiller,the fresh weight of the main stem,the thousand-grain weight,the dry weight of the ear,the thickness of the stem and the protein showed an obvious downward trend with the increase of density,and the change of the fresh weight of the main stalk panicle had a significant difference.The results of this experiment showed that there are significant differences in the effect of planting density on different agronomic characteristics;at the same time,when the planting density is 90000 plants/hm^(2)and 120000 plants/hm^(2),the yield and quality reach a higher level.

关 键 词：饲用高粱 种植密度 农艺性状 生物产量 品质性状 

分 类 号：S514[农业科学—作物学]