| 摘要: |
| 对吉林3号、晋豆2号结荚后进行遮光试验,定株与抽样观测了遮光与对照荚、粒数、拉厚与叶、荚干重增加过程之差异, 及总 N 与~(15)N 在花荚、叶、茎、根中之分配及其随时间变化之差异。试验初步证明:1.始荚后遮光使节数、分枝数与上部荚、粒数减少,并加快灌浆鼓粒与成熟;2.在结荚鼓粒前期,遮光者 N 主要输往荚、粒,而对照输往新生茎节之 N 较多,这是遮光加速发育与成熟的原因之一;3.始荚后遮光最终因减少荚、粒而减产。 |
| 关键词: 对照 粒数 光合产物 发育 时间变化 示踪试验 大豆生育 遮光 光照时数 |
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| ON THE EFFECT OF DAYLENGTH ON SOYBEAN DEVELOPMENT SINCE POD-SET AND ITS POSSIBLE CAUSES |
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| Abstract: |
| Soybean varietis Jilin No.3 and Shanxi No.2 were planted and 50%of the plants were shaded from sunlight completely for two hours before sunset everyday.Since the very beginning,they were compared with the contrast(the second half)which was under natural sunlight.Numbers of pods and beans on each node and thickness of each bean on fixed pl- ants were measured every other day;dry weight of pods,leaves,stems and roots,and total N and N in those of randomly sampled plants were measured respectively in every 10 ... |
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