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1987年8月初,本院安宁渠试验场的甜瓜,叶片上出现大量病斑,随后病斑迅速扩大,互相连接,除瓜蔓顶端有几张新叶外,其余叶片全部干枯,全田一片枯焦.此时中熟甜瓜接近成熟,晚熟甜瓜正值果实膨大期,甜瓜果实因受其危害,而不能成熟.与此同时,我们对石河子垦区及五家渠一○一、一○二、一○三和一○五团的甜瓜田进行了调查,仅一○五团瓜田有轻微发病,其他瓜地均未发病.据观察,本病病初,叶片上出现针尖大的褪绿黄斑,病斑水渍状,随后病斑迅速扩大,因受叶脉限制,形成褐色多角形病斑,边缘有褪绿圈,后期病斑互相连接,致使全叶焦枯卷缩,极易破碎.
At the beginning of August 1987, a large number of spots were found on melon and leaves of Anningqu Hospital in our hospital. Then the lesion expanded rapidly and connected with each other. In addition to the top of the melon, there were a few new leaves, and the remaining leaves were all dried up. When ripe sweet melon is close to maturity, late maturing melon positive fruit swelling, melon fruit due to its harm, but not mature.At the same time, we Shihezi Reclamation and Wujiaqu one hundred and one, two hundred and one and three and One hundred and five regiment melon fields were investigated, only a small group of 105 melon fields have a slight incidence, no other melons were not disease.It was observed early in this disease, the tip of the needle appears large chlorotic macular, spot stain Like, and then quickly expand the lesion, due to the limitations of the veins, the formation of brown polygonal lesion, the edge of the chlorotic ring, the latter lesion connected to each other, resulting in scorched and scorched the whole leaf, easily broken.