不同种植密度对甜高粱杂交种生物产量及相关性状的影响  

Effects of Different Planting Densities on Biomass and Related Characters of Sweet Sorghum Hybrids

作　　者：王海莲[1] 刘宾[1] 张华文[1] 杨延兵[1] 秦岭[1] 陈二影[1] 陈桂玲[1] 管延安[1] 

机构地区：[1]山东省农业科学院作物研究所,山东济南250100

出　　处：《山东农业科学》2014年第7期62-65,共4页Shandong Agricultural Sciences

基　　金：山东省优秀中青年科学家奖励基金项目(BS2011NY019);国家科技支撑计划项目(2009BADA7B01);国家现代高粱产业技术体系项目(CARS-06-04-08)

摘　　要：以3个甜高粱杂交种为试材,研究6个种植密度对株高、茎粗、分蘖数、倒伏级别和生物产量的影响。结果表明：不同种植密度对3个杂交种的分蘖数、倒伏级别和生物产量的影响达到显著水平,对株高和茎粗的影响差异不显著;综合分析倒伏性和生物产量,在山东省生态条件下,济甜杂2号的最佳种植密度为5.5万株/hm2,济甜杂3号为3.3万株/hm2,辽甜3号为3.3万~4.5万株/hm2;3个杂交种在最佳种植密度下不仅生物产量最高,而且倒伏率低,有利于机械化收割。Three sweet sorghum hybrids were used to research the effects of 6 different planting densities on plant height,stem diameter,tiller number,lodging level and biomass.Variance analysis showed that the differences in tiller number,lodging level and biomass between different densities reached significant level,while those of plant height and stem diameter were not significant.Comprehensively analyzing lodging characters and biomass,the optimum planting density of Jitianza 2,Jitianza 3 and Liaotian 3 was 55 000,33 000and 33 000 ~ 45 000 plants per hectare respectively.Under the optimum planting density,the three hybrids had the highest biomass and low lodging rate which was beneficial to mechanical harvesting.

关 键 词：甜高粱 种植密度 生物产量 分蘖 倒伏 

分 类 号：S514.047[农业科学—作物学]