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以Ｅｘｏｔｅｃｈ１００ＢＸ光谱辐射计对不同类型水稻材料无肥处理本田期的监测结果表明，晚熟类型材料武育粳２号，冠层叶色显示出“三黑三黄”的变化节奏。“三黑”出现的时间是：移栽至分蘖末期，枝梗分化期至颖花分化期，花粉母细胞形成及减数分裂期至始穗期；“三黄”出现的时间是：分蘖末期至枝梗分化期，颖花分化期至花粉母细胞形成及减数分裂期，始穗至灌浆期。中熟类型材料汕优６３，冠层叶色显示出“二黑二黄”的变化节奏。“二黑”出现的时间是：移栽至颖花分化期，花粉母细胞形成及减数分裂期至始穗期：“二黄”出现的时间是：颖花分化期至花粉母细胞形成及减数分裂期，始穗至灌浆期。早熟类型材料亚优２号，冠层叶色显示出“一黑一黄”的变化节奏。“一黑”出现的时间是：移栽至颖花分化期；“一黄”出现的时间是：颖花分化期至灌浆期。
The monitoring results of non-fertilizer treatment of different types of rice materials with Exotech100BX spectral radiometer in the Honda period show that the late rhythm type material Wuyujing 2, the canopy leaf color shows a rhythm of “three blacks and three yellows”. The occurrence time of “three blacks” is as follows: transplanting to the end of tillering stage, branchage differentiation stage to spikelet differentiation, pollen mother cell formation and meiosis stage to initial heading stage; the time of emergence of “three yellow” is: To the branch of differentiation, spikelet differentiation to pollen mother cell formation and meiosis, starting from ear to filling stage. Medium maturity type material Shanyou 63, canopy leaf color shows “two black two yellow” change rhythm. The appearance time of “two blacks” is: transplanting to spikelet differentiation, pollen mother cell formation and meiosis to initial heading stage: the appearance time of “two yellow” is: the formation of pollen mother cells during spikelet differentiation and Meiosis period, ear initiation to filling stage. Precious type material Yayou 2, canopy leaf color shows “a black one yellow” change rhythm. “One black” appears time is: transplanting to spike flower differentiation period; “a yellow” appearing time is: spikelet differentiation period to filling period.