The relation between secondary metabolites of Ambrosia artemisiifolia and soil microorganism was studied. 本文对豚草的次生代谢产物与土壤微生物之间的关系进行了研究。
The effects of competition with Helianthus turberosus on photosynthesis of Ambrosia trifida were studied under different densities under series replacement experiments. 采用取代试验设计，研究了不同密度比条件下，菊芋对三裂叶豚草光合特性的竞争机理。
