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棉枯、黄萎病菌(镰刀菌和轮枝菌)是两种好气性的病原真菌。大量事实证明:长期淹水、极度缺氧会使这种病原真菌呼吸作用受阻,不能取得新陈代谢所需的化学能;同时,土壤真菌在无氧条件下的某种发酵作用产生有毒物质,也会使这种病原菌窒息,中毒致死。根据这一事实,我们在总结以往水旱轮作防治棉枯黄萎病经验的基础上,从1977年起,对“水旱轮作防病机理”这一课题,开展了一些工作,现将两年来所获得初步结果作一简报。
Cotton withered, Verticillium dahliae (Fusarium and Verticillium) are two kinds of aerobic pathogenic fungi. A large number of facts show that: prolonged flooding, extreme hypoxia will make this pathogenic fungi respiration blocked, can not obtain the required chemical energy metabolism; the same time, soil fungi in anaerobic conditions of some fermentation produce toxic substances, will To make this pathogen suffocation, poisoning to death. Based on this fact, on the basis of summarizing the experience of previous crop rotation and drought control on cotton wilt, starting from 1977, we carried out some work on the topic of “disease prevention and cure mechanism for drought and drought” Obtain preliminary results for a briefing.