不同施肥量和种植密度对高丹草‘晋草4号’农艺性状和光合指数的影响  

Fertilizer Amount and Planting Density: Effect on Agronomic Characters and Photosynthetic Indexes of ‘Jincao 4’

作　　者：吕鑫[1,2,3] 平俊爱 杜志宏[1,2,3] 李惠明 牛皓[1,2,3] 王玉斌 张福耀[1,2,3] Lv Xin;Ping Jun’ai;Du Zhihong;Li Huiming;Niu Hao;Wang Yubing;Zhang Fuyao(Sorghum Institute,Shanxi Academy of Agricultural Sciences,Jinzhong 030600,Shanxi,China;Shanxi Key Laboratory of Sorghum Genetics and Germplasm Enhancement,Jinzhong 030600,Shanxi,China;Key Laboratory of Crop Gene Resources and Germplasm Enhancement on Loess Plateau,Ministry of Agriculture,Taiyuan 030031,Shanxi,China)

机构地区：[1]山西省农业科学院高粱研究所,山西晋中030600 [2]高粱遗传与种质创新山西省重点实验室,山西晋中030600 [3]农业部黄土高原作物基因资源与种质创制重点实验室,太原030031

出　　处：《农学学报》2019年第9期55-60,共6页Journal of Agriculture

基　　金：现代农业产业技术体系建设专项资金“国家谷子高粱产业技术体系晚熟粳型酒用高粱育种”(CARS-06);山西省科技创新重点团队运行补助“酿造专用高粱育种及利用”(201605D131044-07);山西省农科院院育种工程项目“高产、优质、多抗饲草高粱新品种选育”(17yzgc031);山西省农科院优势课题组自选项目“基于SSR的高粱PS基因分子标记”(YYS1706);高粱遗传育种与种质创新山西省重点实验室青年基金课题“高粱抗旱优异等位基因挖掘的群体初步构建”(GLS16-3)

摘　　要：旨在确定高丹草‘晋草4号’高产高效栽培模式适应的施肥量和种植密度。运用群体生理学的方法,采用两因素随机区组设计,研究了不同施肥量和种植密度对高丹草‘晋草4号’各农艺性状和各光合指标的影响。结果表明,在山西中部地区,不同施肥量和种植密度影响下,‘晋草4号’株高、茎粗、分蘖数、生物产量、干重产量和各项光合指标均存在明显差异;株高、茎粗、生物产量、干重产量、叶面积指数和净光合速率在F2D3时,表现最好;分蘖数、叶绿素含量和气孔导度在分别在F2D4、F2D2和F3D1时表现最好,F2D3表现次之。处理F2D3即种植密度为390000株/hm2,施肥量为750 kg/hm2时最为适宜。The main purpose of this article is to determine the fertilizer amount and planting density for the high-yield and high-efficiency cultivation model of‘Jincao 4’.Using the group physiology method and two factors randomized block design,the effects of fertilizer amount and planting density on the agronomic characters and photosynthetic indexes of‘Jincao 4’were studied.The results showed that the plant height,stem diameter,tiller number,biological yield,the yield of dry weight,and the photosynthetic indexes of‘Jincao 4’had significant differences under different densities and fertilizer amounts in central Shanxi.The plant height,stem diameter,the biological yield,the yield of dry weight,LAI and the net photosynthetic rate were the highest under F2D3 treatment.However,the tiller number,chlorophyll content,stomatal conductance were the highest under F2D4,F2D2 and F3D1 treatment,and F2D3 treatment took the second place.It indicated that the planting density of 390000 plants per hectare and fertilizer amount of 750 kg/hm2 is appropriate for‘Jincao 4’.

关 键 词：高丹草 施肥量 种植密度 光合指数 生物产量 

分 类 号：S514[农业科学—作物学] S352.3