落叶松褐锈病的流行及重寄生菌的利用技术研究

STUDY ON EPIDEMIC OF TRIPHRAGMIOPSIS LARICINUM AND USE OF HYPERPARASITIC FUNGUS

本文利用连续３年的观测结果并结合主要气候因子，对发生在落叶松属植物上落叶松褐锈病年流行规律进行了综合相关分析，又利用寄生在该病原菌夏孢子堆上的Ｓｐｈａｅｒｅｌｏｐｓｉｓｆｉｌｕｍ在本溪、宽甸两地进行了防治试验。结果表明，辅以人工方法，可使Ｓｐｈａｅｒｅｌｏｐｓｉｓｆｉｌｕｍ的寄生率由原来的１６％提高至８５％以上。

This paper deals with relationship between climate and outburst of Triphragmiopsis laricinum, and biocontrol to the disease. Basic laws of Triphragmiopsis laricinum were sumerized through analyzing data of disease occured in larch and climate factors in three continuous years. Meanwhile, a hyperparasitic fungus, Sphaerellopsis filum, was used for biocontrol in Benxi and Kuandian,which reachs a good result.\=