| 释义 |
- 1
The leave was the same change trend as the shoots, but N was higher than Ca in order of element concentration. 叶片中的矿质元素含量变化与新梢变化相同，但含量顺序上氮高于钙。 - 2
Ca absorption and tipburn of lettuce were studied under different application of n, k, ca, sprinkler irrigation and border irrigation in open field. 在露地栽培条件下，研究了不同氮、钾、钙水平处理以及喷灌、畦灌对生菜钙吸收和干烧心的影响。 - 3
In upper of the medium, the element accumulation of n, Ca, Mg, cu, Fe and Mn may be harmful to the plant. 试验显示营养液中的氮和钙、镁、铜、铁、锰等元素在基质上部富集，可产生肥料盐害。
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