油菜苗情分析及早春管理

• 作 者: 上海市农科院作物所油菜组
• 出 处: 上海农业科技
• 发表日期: 1978年03期
• 关键词: 油菜苗 干鲜比 油菜 绿叶数 高脚苗 叶面积 较好 个点 秧苗素质 根茎

去年冬天,我所召开油菜联系点会议,同郊区8个县12个点的同志,分析研究油菜苗情,对今后管理提出了意见,现汇总如下: 一、秋种基础较好去年油菜秧苗数量较多,素质较好。绿叶数、叶面积、根茎粗、及干鲜比等均比前年显著提高(表1)。只是由于秧田阶段温度偏高,秧田面积不足,留秧过密等原因,高脚苗的现象仍较普遍。

Last winter, I held a meeting of rapeseed points, with 12 counties in eight suburb counties, analysis of rapeseed seedlings, put forward their views on the future management, are summarized as follows: First, the autumn seed foundation is better Last year, the number of rapeseed seedlings More, better quality. The number of green leaves, leaf area, rhizomes, and fresh-to-dry ratio were significantly higher than the previous year (Table 1). Only because of high temperature in the seedling stage, lack of seedling area, seedling retention is too close and other reasons, the phenomenon of tall seedling is still more common.