... absorption bulb吸收球管 battery control lamp bulb蓄电池充电指示灯泡 auto bulb汽车头灯 ...
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The key period of element absorption was plantlet to visible bud stage. Potassium was more important than Nitrogen and Phosphorus for development of bulb.
植株营养吸收的关键时期为幼苗至现蕾期，鳞茎发育对钾营养的需求大于氮和磷。
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