真菌除草剂的研究进展

真菌除草剂具有防治杂草的潜在优势。目前具有生物潜能的真菌主要集中在盘苞菌属等9个属中，国内外已筛选出对多种杂草具有良好除草活性的真菌菌株，部分菌株防治效果可与化学除草剂相媲美；但其寄主专一性高、发酵与制剂加工困难等限制了其在生产上的广泛应用。不同真菌间的混用、真菌与低剂量化学药剂间的混用及可克服其限制因素，提高病菌致病力；此外，制剂加工方法的改进，病原微生物与昆虫制品的综合利用，特别是转基因技术和DNA重组技术在菌株改良上的应用成为真菌除草剂的热点研究方向。

Current Advances in Mycoherbicides Research

Using mycoherbicides for control of weeds has great potential. The fungi with herbicidal activity are mostly focus on the fungus colletotrichum and other eight fungi. Now it has screened many herbicidal activity strains in the world. Control efficiency of some strains is as well as chemical herbicides. But the difficulties of fermentation and formulation, the high host-specifity and other problems are limiting its application in production. The application of mycoherbicide combine with low rates of herbicides or other fungi can overcome some limitations, and improve the pathogenicity. In addition, the improvement of formulation, comprehensive utilization of pathogenic microbes and insect agents, especially strain improving by transgenic technology and DNA recombination technology have become hot research directions.