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。
The key period of element absorption was plantlet to visible bud stage. Potassium was more important than Nitrogen and Phosphorus for development of bulb.
研究结果表明：供试四种机理模型均能较好地反映玉米与大豆幼苗的磷吸收变化情况；
The results showed that: (a) All of the three kinds of selected models can reflect the changing trend of P uptake by seedlings of maize and soybean;
盆栽试验研究了不同施磷水平的强酸性土壤上油菜幼苗根系形态特征及其对土壤磷素吸收。
Through pot culture, the author studied the formation characteristics of the root system of rape seedlings planted in strong acid soil and the absorption of phosphorus through the root system.
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