油菜生态特性研究——油菜的播期与产量的生态和生物差异  

Studies on Ecological Characters of Rape

作　　者：王国槐[1] 官春云[1] 陈社元[1] 

机构地区：[1]湖南农业大学植物科技学院,湖南长沙410128

出　　处：《江西农业大学学报》2001年第2期174-177,共4页Acta Agriculturae Universitatis Jiangxiensis

基　　金：湖南省教委科学研究资助项目 !(0 1- 95 1- 0 3 - 1)

摘　　要：用甘蓝型油菜湘油 13号在 4个不同地点进行了 4个播期的研究。结果表明 :在 9月至 10月范围同一地点播种越早产量越高。在不同地点同一播期 ,产量与全生育期以及冬前主茎叶与总积温之间的相关是显著正相关。冬前总积温和主茎叶对产量的贡献是不同的 ,在高纬度比低纬度的大。通过早播产量增加的生物学基础是促进了幼苗的生长。Four seeding date studies of rapeseed (B.napus) cultivar Xiang you 13 were conducted at four locations. The results showed that the earlier seeding dates in September and October at the same location, the higher yields. The relationships between yield and whole growth period and between total cumulative temperature and the leaves on the main stem before winter were notable positive at different locations on the same seeding date. Total cumulative temperature and main stem leavies before winter were different in the contribution to the yield, which was larger at high latitudes than that at low latitude. Biological basis of yield increases through early seeding was its enhancement to seeding growth. The key cultural technique for high yield through early seeding was to develop robust seedings.

关 键 词：油菜 生态习性 播期 产量 生态差异 生物学差异 高产生物学基础 

分 类 号：S565.4[农业科学—作物学]