由于近年来引种带菌等问题,导致黄瓜炭疽病近年来发生不断趋重,春秋两季均有发生,防治难度较大,对生产影响巨大。发病原因:引起黄瓜炭疽病的是半知菌亚门真菌病原刺盘孢菌。此菌以菌丝体或拟菌核在种子上或随病残体在土壤中越冬。病菌翌年春季条件适宜时产生分生孢子盘(图1),并产生大量的分生孢子(图2),成为黄瓜炭疽病的初侵染源。图1刺盘孢菌分生孢子盘图2显微镜下刺盘孢菌的孢子和尖端刚毛。 In recent years, introduction of fungi and other issues leading to cucumber anthracnose continue to weigh more and more in recent years, both spring and autumn have occurred, prevention and control more difficult, a huge impact on the production. The cause of the disease: Cucumber anthracnose caused by the half-known bacteria, fungi of the genus sethora Sphaerothecae. This bacterium mycelium or pseudomycotina overwinter in the soil or on the seeds. Conidiophores were produced when the germs were suitable in the following spring (Figure 1) and produced a large number of conidia (Figure 2), becoming the primary source of anthracnose in cucumber. Fig.1 Conidia disk of SporangiumFig.2 Spore and tip bristles of Sphaerotheca fulgum under microscope.