插秧密度与苗数对不同分蘖类型寒地水稻群体构成的影响  

Effect of Transplanting Number and Density on Population Structure of Different Tillering Type Rice in Cold Region

作　　者：丁国华[1,2] 杨光 白良明[1] 孙世臣[1] 姜树坤[1,2] 王彤彤[1] 夏天舒[1] 陈书强[4] 张凤鸣[1] 

机构地区：[1]黑龙江省农业科学院耕作栽培研究所,黑龙江哈尔滨150086 [2]中国科学院北方粳稻分子育种联合研究中心,黑龙江哈尔滨150086 [3]辽宁省经济作物研究所,辽宁辽阳111000 [4]黑龙江省农业科学院佳木斯水稻研究所,黑龙江佳木斯154000

出　　处：《华北农学报》2015年第6期146-152,共7页Acta Agriculturae Boreali-Sinica

基　　金：国家水稻产业技术体系项目(CARS-01-43);黑龙江省攻关重大项目(GA13B101);国家科技支撑计划项目(2011BAD16B11);哈尔滨市科技局项目(2014RFQYJ125)

摘　　要：为了明确插秧密度和苗数对寒地不同分蘖类型水稻品种群体构成、产量及产量构成因素等的影响,以多蘖型东农428和寡蘖型龙稻5为试材,采用大田裂区试验设计对不同插秧苗数、密度对寒地不同分蘖类型水稻品种群体构成、叶片SPAD值、产量及产量构成因素的影响进行了研究。结果表明:密度对多蘖型东农428分蘖数量影响更大,而插秧苗数对寡蘖龙稻5影响更为明显。密度和插秧苗数对不同类型水稻品种的SPAD值影响较为一致,即栽植密度较小、插秧苗数较少的处理SPAD值较大。龙稻5在插秧数为8,插秧规格为30 cm×12 cm时产量最高,东农428在插秧苗数为8,插秧规格为30 cm×14 cm时产量最高。In order to elucidate the density and number of transplanting influence population structure,yield and yield component of different tillering ability rice in cold region. Field experiments with Dongnong 428 and Longdao 5 were carried out under various number of hills per unit area,seedlings per hill. The effect of transplanting number and density on population structure of different tillering type rice were investigated. Our results showed that hills per unit area of transplanting had greater influenced on strong-tillering-ability cultivar Dongnong 428,while seedlings per hill of transplanting had greater influenced on inferior-tillering-ability cultivar Longdao 5. The effect of transplanting number and density on SPAD was the same to the different-tillering-ability cultivars was that the smaller number of hills per unit area and seedlings per hill,the SPAD was bigger. At 8 seedlings / hill and transplanting standard of 30 cm × 12 cm,Longdao 5 reached the highest yield in field,while Dongnong 428 reached the highest yield at 8 seedlings / hills and transplanting standard of 30 cm × 14 cm.

关 键 词：寒地 水稻 分蘖类型 群体结构 产量 

分 类 号：S511.03[农业科学—作物学]