两个高粱品种生长发育动态变化及对种植密度的响应研究  

Study on dynamic changes of growth and development for two sorghum varieties and response to planting density

作　　者：姜艳喜[1] 盖志佳[2] 刘婧琦[2] 蔡丽君[2] 张敬涛[2] 王雪洁 焦少杰[1] 严洪冬[1] 苏德峰[1] 王黎明[1] 宋嘉雯 JIANG Yanxi;GAI Zhijia;LIU Jingqi;CAI Lijun;ZHANG Jingtao;WANG Xuejie;JIAO Shaojie;YAN Hongdong;SU Defeng;WANG Liming;SONG Jiawen(Crop Resource Research Institute of Heilongjiang Academy of Agricultural Sciences,Harbin 150086,China;Jiamusi Branch of Heilongjiang Academy of Agricultural Sciences,Jiamusi Heilongjiang 154007,China;International Cultural and Educational College,Northeast Agricultural University,Harbin 150030,China)

机构地区：[1]黑龙江省农业科学院作物资源研究所,哈尔滨150086 [2]黑龙江省农业科学院佳木斯分院,黑龙江佳木斯154007 [3]东北农业大学国际文化教育学院,哈尔滨150030

出　　处：《东北农业大学学报》2022年第12期10-17,共8页Journal of Northeast Agricultural University

基　　金：国家重点研发计划资助项目(2019YFD1001700);现代农业产业技术体系资助项目(CARS-06-01-05);黑龙江省重点研发计划资助项目(GA21B009)。

摘　　要：试验采用裂区设计,主区为品种,副区为密度,开展矮秆高粱生长发育动态变化及对密度的响应研究。结果表明,各生育时期不同高粱品种单株和群体叶片干重、茎干重、叶面积指数呈先增后降趋势,在开花期最高;单株和群体穗干重、生物量干重呈逐渐增加趋势,成熟期达到最大值。试验条件下,龙杂22在D4(25株·m^(-2))处理籽粒产量最高为9 540.30 kg·hm^(-2),龙杂25在D3(21株m^(-2))处理籽粒产量最高为9 710.40 kg·hm^(-2),龙杂22品种耐密性优于龙杂25。The split plot design was adopted with variety as main plot and density as subplot in order to study the dynamic change of growth and development of dwarf sorghum and its response to density in the present experiment. The results showed that dry leaf weight per plant, dry population leaf weight, dry stem weight per plant, dry population stem weigh t and leaf area index of different sorghum varieties first increased and then decreased, and reached the highest value at the flowering stage.While the dry spike weight per plant, dry population spike weight, dry biomass per plant and dry population biomass weight gradually increased and reached the highest value at the maturity stage. In the present study, Longza 22 at D4(25 plants·m^(-2)) treatment gave the highest seed yield of 9 540.30 kg·hm^(-2),and Longza 25 at D3(21 plants·m^(-2)) treatment showed the highest seed yield of 9 710.40 kg · hm^(-2).Longza 22 had better density tolerance than Longza 25.

关 键 词：种植密度 高粱 龙杂22 龙杂25 籽粒产量 

分 类 号：S514[农业科学—作物学]