农业现代化研究2011，Vol.32Issue(4)：487-491,5.
不同群体条件下寒地粳稻干物质积累规律研究
Study on Regulation of Dry Matter Accumulation of Japonica Rice in Cold Region Under Different Population
摘要
Abstract
Dry matter accumulation and effect of transplanting density on yield formation of Songjing 9 (super rice varieties) and Songjing 6 (conventional varieties) in cold region under different population conditions were studied. The results showed that: in a certain range of transplanting density, the population dry weight, expert percentage of the matter in stem and sheath (EPMSS) and transformation percentage of the matter in stem and sheath (TPMSS) of Songjing 6 and Songjing 9 were increased with the density increasing. However, when the density was too large, it actually reduced. It was significantly positive correlated between harvest index(HI) and dry weight of panicle in the heading stage, dry weight of the whole plant in the mature stage. It was very significantly positive correlated between HI and dry weight of panicle in the mature stage. It was significantly positive correlated between EPMSS and dry weight of straw, dry weight of panicle in the mature stage. It was very significantly positive correlated between EPMSS and dry weight of whole plant in the mature stage. It was respectively significantly and highly significantly positive correlation between TPMSS and dry weight of panicle, whole plant dry weight in the mature stage. At the first accumulated temperature zone in Heilongjiang Province, the optimal planting density of Songjing 6 was 30cm× 13.3cm, super rice Songjing 9 was 30cm× 16.7cm.关键词
寒地粳稻/插秧密度/干物质积累/产量Key words
cold japonica rice/ transplanting density/ dry matter accumulation/ yield分类
农业科技引用本文复制引用
高扬,刘化龙,杨亮,臧家祥,刚爽,赵宏伟..不同群体条件下寒地粳稻干物质积累规律研究[J].农业现代化研究,2011,32(4):487-491,5.基金项目
国家科技支撑计划项目(编号:2007BAD65B01) （编号:2007BAD65B01）
省科技攻关计划重大项目(编号:GA09B102-1) （编号:GA09B102-1）
东北农业大学创新团队项目(编号:CXT001-2-11). （编号:CXT001-2-11）
