The effects of nitrogen fertilizer at different levels on the growth, the overground yield and content of essential oil with the wild Dracocephalum moldavica L.
为试验材料，研究了不同施氮量对香青兰生长发育、地上部干草产量及挥发油含量的影响。
The effects of nitrogen fertilizer at different levels on the growth, the overground yield and content of essential oil with the wild Dracocephalum moldavica L.
为试验材料，研究了不同施氮量对香青兰生长发育、地上部干草产量及挥发油含量的影响。
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