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小麦全蚀病的识别,只靠田间症状诊断还不能确诊,这里我们介绍几种常用的病原鉴定法: 1.小麦根部全蚀病菌丝的检查: 将小麦根冲洗干净,取变黑的次生根,剪成三至五毫米长的小段,放入苯酚(一份)二甲苯(四份)混合溶液中浸一至二天,使根部透明,然后用水封片,直接用显微镜观察。也可将小段病根用乳酚油(用石炭酸十克,乳酸十毫升,甘油二十毫升,蒸馏水十毫升配成)封片,在酒精灯火焰上通过几次加温,促使透明,在显微镜下观察。
Wheat eclipse identification, field diagnosis alone can not be diagnosed, here we introduce several commonly used pathogen identification method: 1. Wheat root eclipse all mycelium inspection: rinse the wheat root, take the black times Roots, cut into small pieces of three to five millimeters long, into a mixed solution of phenol (a) xylene (four) soak for one to two days, so that the roots of transparent, and then sealed with water, directly observed with a microscope. Can also be a small section of the root cause with lactic acid phenol oil (with carbolic acid ten grams, lactate 10 milliliters, glycerin 20 milliliters, distilled water 10 ml dubbed) sealed in the alcohol lamp flame several times by heating to promote transparency under the microscope Observed.