摘要
选用典型的直立穗型水稻品种沈农265和半直立穗型水稻品种辽粳294为试材,通过田间试验研究氮肥对不同穗型水稻产量和干物质积累与分配的影响。结果表明,当氮肥施用量较低时,半直立穗型辽粳294的产量高于直立穗型沈农265,而高氮条件下的结果则相反。抽穗至收获阶段直立穗型沈农265的干物质积累量高于半直立穗型辽粳294,而在分蘖至抽穗阶段的结果则相反。增施氮肥可以提高水稻干物质的最大累积速率,使干物质最大累积速率及快速累积速率出现时间提前。与半直立穗型辽粳294相比,直立穗型沈农265的干物质最大累积速率小,最大累积速率出现时间及快速累积速率起止时间较迟。
The typical erect-panicle rice variety Shennong 265 and half-erect-panicle rice variety Liaojing 294 were used to study the influence of N fertilizer on grain yield,dry matter accumulation and distribution through field experiment. It was shown that the yield of Liaojing 294 was higher than that of Shennong 265 at low N level,whereas the result was reversed at higher N level. Dry matter accumulation of Liaojing 294 was larger than that of Shennong 265 from tiller stage to heading stage,whereas the result was reversed form heading stage to harvest. Increased N application could improve the maximum dry matter accumulation rate,and advance the beginning time for the highest dry matter accumulation rate. Compared with Liaojing 294,the maximum dry matter accumulation rate of Shennong 265 was lower,and the time when the maximum accumulation and rapid accumulation rate appeared was postponed.
出处
《浙江农业学报》
CSCD
北大核心
2014年第6期1590-1595,共6页
Acta Agriculturae Zhejiangensis
基金
内蒙古自然科学基金(2012MSO302)
市校合作项目(SXYB2012070)
教育部留学回国人员科研启动基金资助项目
关键词
直立穗型水稻
最大累积速率
抽穗期
erect panicle rice
the maximum accumulation rate
heading stage
