中国油料作物学报2012，Vol.34Issue(6)：620-626,7.
播期对北方白菜型冬油菜生长发育及产量的影响
Effect of sowing date on Brassica rapa growth and yield in northern China
摘要
Abstract
Changes of wintering rate, growing development, root shoot ratio and yield characters of winter rapeseed (Brassica rapa L. ) cultivars in northern cold and arid regions were analyzed with different sowing dates for high yield after cold winter in north of China. Results showed significant negative correlation between wintering rate and sowing date. With delayed sowing date, the wintering rate, dry matter, root shoot ratio, plant height, plant silique number, thousand - seeds weight, yield and oil content were all decreased. When sowing date delayed for 7 days, the seedling stage was prolonged, and the lifespan of the plant was shortened for 4 to 7 days. It indicated that appropriate early sowing could benefit and promote the growth and development as well as increase wintering rate and yield.关键词
播期/白菜型冬油菜/越冬率/生育期/根冠比/产量Key words
Sowing date/ Winter rapeseed (Brassica rapa L. ) / Wintering rate/ Growth period/ Root shoot ratio/ Yield分类
农业科技引用本文复制引用
姜海杨,孙万仓,曾秀存,方彦,陈姣荣,史鹏辉,赵彩霞,何丽..播期对北方白菜型冬油菜生长发育及产量的影响[J].中国油料作物学报,2012,34(6):620-626,7.基金项目
国家现代农业产业技术体系建设专项(CARS-13) （CARS-13）
国家行业科技项目(200903002-4) （200903002-4）
国家863计划专项(2011AA10A104) （2011AA10A104）
