分期播种对西藏甘蓝型油菜心叶出叶速度的影响研究  

Effects of Stage Sowing on Heart Leaf Emergence Rate of Brassica napus L. in Tibet

作　　者：杨国浪 YANG Guo-lang(Rikaze Agricultural Research Institute,Tibet Rikaze 857000,China)

机构地区：[1]西藏日喀则市农业科学研究所

出　　处：《西藏农业科技》2019年第1期17-20,共4页Tibet Journal of Agricultural Sciences

摘　　要：本文以年河18号播期试验为基础,研究了分期播种条件下,≥0℃活动积温对油菜心叶出叶速度的影响,建立了不同播期下心叶出叶数与有效积温的线性方程,利用该线性关系,可以根据当地的积温资料,推断西藏高海拔区甘蓝型油菜苗期的生长发育进程,在充分利用有利气象资源的基础上,采取相应的配套管理措施,指导当地的油菜生产,为西藏高海拔区甘蓝型油菜后期的丰产稳产奠定前期的营养基础。The effects of active accumulated temperature (≥ 0 ℃) on the heart leaf emergence rate of rape were studied based on the sowing date experiment o‘f Nianghe 18’and the linear equations between the number of heart leaves and the effective accumulated temperature were established under different sowing dates.According to the local accumulated temperature data, the growth and development process of seedling stage of Brassica napus L.in high altitude area of Tibet could be deduced by using this linear relationship.On the basis of making full use of favorable meteorological resources, corresponding supporting management measures could be taken to guide the local production of Brassica napus and lay the early nutrition foundation for the high yield of Brassica napus in high altitude area of Tibet.

关 键 词：分期播种 西藏 甘蓝型油菜 心叶出叶速度 影响 

分 类 号：S565.4[农业科学—作物学]