1Department of Horticulture， Northeast Agricultural University， Harbin 150030， Heilongjiang， China； 2Department of Life Science and Agro-forestry， Qiqihar University， Qiqihar 161006， Heilongjiang， China
Abstract：Fusarium oxyxporum Schl. f. sp. niveum（E. F. Smith）Snyder et Hansen，a causal agent of Fusarium wilt of watermelon，is a common soil-borne pathogen and it is one of the major factors limiting watermelon production．This paper expounds Fusarium oxyxporum Schl. f. sp. niveum（E.
F. Smith）Snyder et Hansen，mechanism of watermelon resistance to Fusarium wilt and its control measures．A safe and effective measure was put forward in this paper，such as seeking plants which can inhibit Fusarium oxyxporum Schl. f. sp. niveum（E. F. Smith）Snyder et Hansen by using plant
allelopathy，and adopting reasonable techonology as intercropping，rotation，relay intercropping，so as to safely and effectively control Fusarium wilt of watermelon．