Abstract:Environmental condition is a key factor affecting the outbreak of cucumber downy mildew. To develop effective bionomic control strategies, it is important to decipher the essential condition and restrictive factors influencing the occurrence of this disease. “High\|temperature sealing greenhouse” , which was used to control cucumber downy mildews, is a representative of the ecological control technique of vegetable disease. This method has been developed for over 20 years, but it was limited because the det...