黄瓜腐霉根腐病,群众叫它“倒蔓”、“割根”。发病后七天左右便整行、整畦的瓜蔓枯萎死亡,一般减产三至五成以上,重的毁灭无收。此病主要集中于西安东郊土质粘重的浐河、坝河一带渠水灌区。我所科技人员与贫下中农相 Cucumber Pythium rot, the crowd called it “down vine”, “cut root.” After about seven days after the onset of the entire line, the whole melon wilted death, the general reduction of three to five percent or more, heavy destruction without payment. The disease is mainly concentrated in the eastern suburbs of Xi’an sticky soil Qiahe, dam along the canal irrigation area. My scientific and technical personnel and the poor middle peasants phase