辽宁农业科学Issue(1)：1-6,6.DOI:10.3969/j.issn.1002-1728.2018.01.001
分期播种插秧对水稻产量和生育进程的影响
The Effect of Sowing and Planting Date on the Rice Growing Process&Yield and its Components
摘要
Abstract
To investigate the effect of sowing and planting times on the rice yield and its yield components, in the 4 different sowing and planting times,the increasing of leaf number,plant height,and tiller number of 3 rice varieties,was studied.The results were as follows.The difference of average yield of 3 rice varieties was significant.With postponing of the sowing and planting time,the rice yield decreased,respectively,and the yield decreasing of the latest time was the most.With postponing of the sowing and planting time, as major components that affected the rice yield,the panicle number per plant decreased and the blighted grain rate in-creased,and the difference between times were significant.During sowing and planting times,the total num-ber of rice leaf changed little,but rice leaf emergence speed had the tend of increasing with postponing of so -wing and planting time.Tiller number of rice in different sowing and planting times had a tend of increasing quickly at earlier stage,being steady or decreasing a little at later stage,and panicle number of rice sowed and planted earlier were more than that of rice sowed and planted later.The result showed that instead of postpo-ning accordingly,the effective tiller period were shortened with postponing of sowing and planting time.Be-sides,the plant height of different rice varieties in different sowing and planting times had the same tend of in-creasing.关键词
水稻/播种期/产量/叶龄/分蘖/株高Key words
Rice/Sowing and planting times/Yield/Leaf number/Tiller/Plant height分类
农业科技引用本文复制引用
苏玉安,王昌华,唐志强,蒋洪波,吕桂兰,李小宛..分期播种插秧对水稻产量和生育进程的影响[J].辽宁农业科学,2018,(1):1-6,6.基金项目
辽宁省"十二五"攻关项目(2014201002) （2014201002）
国家公益性行业(气象)科研专项(GYHY201306036) （气象）
