豚草生态学特性及生防对策

综述了豚草国内外研究的历史和现状，重点论述了豚草的生态学特性及其危害，确立了生物防除豚草应采取的综合措施。其中，以经济植物替代豚草的生态防除措施最具优越性，即可有效地控制豚草的生长和扩散，消除豚草花粉病和豚草对农作物的威胁，又具美好环境，保持水土，无化学防除二次污染等多种社会效益和生态效益。

Ecological Characteristics of the Ragweeds and Countemeasure of the Biological Weed Control

At first the history and development of the study on the ragweeds were summarized in this paper, then the ecological characteristics and harmfulness of the ragweeds discussed. It was sured that in the biological control, using perennial herbs and shrubs displacing ragweeds is an effective ecological control method. The method is not only effective tocontrol growth and spread of the weed and removes allergenic pollen, the primary cause ofhay fever and danger to crops but also to beautify the environment, keep ground -water andno to preduce chehacal pollution. In another word, the method can make social, ecologicaland ecndrical benefit.