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《Acta Agriculturae Boreali-Sinica》 2015-06
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Effect of Transplanting Number and Density on Population Structure of Different Tillering Type Rice in Cold Region

DING Guo-hua;YANG Guang;BAI Liang-ming;SUN Shi-chen;JIANG Shu-kun;WANG Tong-tong;XIA Tian-shu;CHEN Shu-qiang;ZHANG Feng-ming;Crop Tillage and Cultivation Institute,Heilongjiang Academy of Agricultural Sciences;Northern Japonica Rice Molecular Breeding Joint Research Center,Chinese Academy of Sciences;Institude of Economic Crop of Liaoning;Institute of Jiamusi Rice Sciences,Heilongjiang Academy of Agricultural Sciences;  
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.
【Fund】: 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)
【CateGory Index】: S511
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