额敏县是新疆最大的打瓜种植产区,独特的干旱半干旱型大陆型气候,有利于打瓜的生产,生产出的瓜籽粒大、仁厚。目前,制约打瓜单产提高的重要因素之一是打瓜中后期病害,如疫霉病、炭疽病、白粉病等。特别是近几年来大发生的白粉病,严重影响了打瓜产量的提高。一、打瓜疫霉病该病是一种土传病害,主要发生在6～8月高温 Eminonu County is the largest foraging planting area in Xinjiang. The unique arid and semi-arid continental climate is conducive to the production of melon seeds, and the melon seeds produced are large and kernel-rich. At present, one of the important factors restricting the improvement of yield per unit area is to fight the late stage diseases, such as Phytophthora infestans, anthrax and powdery mildew. In particular, the occurrence of powdery mildew in recent years has seriously affected the improvement of melon production. First, fight melon Phytophthora disease is a soil-borne disease, mainly occurred in 6 to August high temperature