播种期对早熟超级稻子粒灌浆特性的影响  

Effects of Planting Date on Grains Filling Characters of Early Maturing Super Rice

作　　者：赵飞[1,2] 王嘉宇[1] 陈温福[1] 

机构地区：[1]沈阳农业大学水稻研究所 [2]天津市水稻技术工程中心,天津,天津300457

出　　处：《作物杂志》2009年第1期42-45,共4页Crops

基　　金：国家科技支撑计划(2006BAD01A01-6);辽宁省科技计划资助项目

摘　　要：以直立大穗型超级稻品种沈农265为试验材料,用Logistic方程对子粒灌浆过程进行模拟,研究播种期对超级稻子粒灌浆进程的影响。结果表明,随着播种期的推迟,有效灌浆时间缩短,灌浆高峰期提前。按着子粒位置分析,播种期对下部二次枝梗谷粒灌浆的影响比较明显。对整个灌浆过程的综合分析表明,超级稻沈农265在辽宁地区的播种期最迟不能超过5月上旬,否则灌浆进程将会受到明显的影响,进而影响产量的提高。Effect of sowing date on grain filling properties rice cuhivar ＂Shennong 265＂ were studied in this experiment. The data were simulated and analyzed with Logistic equation Y = K/（ 1 ＋ ae^-bt ）. The results indicated that planting dates had distinct effect on shennong 265＇s grain-filling. The effective filling process with late-sowing became shorter and the maximal filling-rate became earlier. Sowing dates had more significant effect on the basic grain of secondary branch than the others. Shennong 265＇s latest-sowing date was the first ten days of May in Liaoning Province.

关 键 词：水稻 播种期 灌浆特性 

分 类 号：S511.31[农业科学—作物学]