华南农业大学学报2017，Vol.38Issue(2)：32-37,6.DOI:10.7671/j.issn.1001-411X.2017.02.007
不同播期与收获期对水稻灌浆期、产量及米质的影响
Influence of different sowing date and harvest time on rice filling stage, yield and grain quality
摘要
Abstract
[Objective] To study the appropriate sowing time of different rice varieties , and ensure high quality and yield of rice .[Method] Six restorer lines and their 12 combinations were used as materials sowed on four dates (6 d intervals).The two-factor two-data without repeated observation model and LSD test were used to analyze differences of grain yield , grain filling stage , processing quality and appearance quality among different sowing dates and harvest periods .[Result] Sowing date significantly influenced brown rice rate of restorer line and had no significant effects on grain yield , grain filling period , milled rice rate, head milled rice rate , chalkiness rate and chalkiness .There was no significant difference among grain yields of II-you combinations sowed on different dates .Yixiangyou combinations were signifi-cantly influenced at the 4th period, but weren’ t at the 1st-3rd period.Sowing date significantly influ-enced rice milling and appearance quality of hybrid combinations .Sowing delay reduced the brown rice rate, chalkiness rate and chalkiness degree , but didn’s influence the total milled rice rate and head rice rate.Harvesting delay increased the brown rice rate , chalkiness rate and chalkiness degree , but reduced the total milled rice rate and head rice rate at the 4th period.[Conclusion] After March 27, sowing delay significantly decreased yield of restorer lines and hybrid combinations in Southern Sichuan Prov-ince , but not the ratio of length to width .The yield most significantly decreased for rice sowed from early to middle of April.Compared with restorer lines , sowing date has more influence on filling stage , rice milling quality and appearance quality of hybrid combinations .Delaying harvest time will cause poor pro-cessing quality and appearance quality of hybrid rice grains .关键词
杂交稻/恢复系/播种期/收获期/灌浆期/产量/米质Key words
hybrid rice/restorer line/sowing date/harvest date/filling stage/yield/grain quality分类
农业科技引用本文复制引用
包灵丰,林纲,赵德明,王丽,贺兵,江青山,张杰..不同播期与收获期对水稻灌浆期、产量及米质的影响[J].华南农业大学学报,2017,38(2):32-37,6.基金项目
现代农业产业技术体系建设专项（CARS-01-75）；四川省学术和技术带头人培养资金 （）
