2008年大通湖区棉花黄萎病大发生原因分析及综合防治措施

Causes of Infestation of Verticillium Wilt of Cotton in Datonghu and Control

2008年棉花黄萎病在洞庭湖区再一次大暴发,通过对该年大通湖区黄萎病发生的特点及原因进行调查与分析,结果表明棉花黄萎病大发生的主要原因是气候条件与棉花敏感生育期相吻合,其次是不同品种抗性不同、不同耕作制度、地力条件及栽培管理影响不同。针对病害发生原因,提出了以采用保护无病区、消灭零星病区、控制轻病区、改造重病区的策略,有效地控制黄萎病危害。

Verticillium wilt of cotton outbroke in Datonghu region in 2008. Investigation found that Vertieillium dahliae occurred mainly due to a wide range of climatic conditions. Concurrence of sensitive cotton growth period and the favorable weather caused the infestation. Different cotton varieties with different resistance to the disease, different farming systems, soil conditions, and different cultivation and management methods affected the occurrence of the disease. Countermeasures of protecting uninfected areas, eradication of scattered areas, control of lightly infected areas are put forward for control of vertieillium.