易门县烤烟新品种KRK26黑胫病发生规律分析

摘要

Tobacco black shank disease is one of devastating soil-borne diseases in world tobacco production.The occurrence regularity of tobacco black shank disease in Yimen County of Yunnan Province was studied by using the field investigation and survey system.The results showed that the tobacco black shank disease happened in vigorous growing stage to harvest time.The degree of disease was up to 1 to 3 Grade ,the occurrence and development were directly related to rainfall capacity.Therefore,attention should be paid to the prevention of tobacco black shank disease in the rain rich year.%烟草黑胫病是危害世界烟草生产的一种毁灭性的土传病害。采用田间系统调查和普查的方法，对云南省玉溪市易门县烟草黑胫病的发生规律进行了初步研究。结果表明：烟草黑胫病主要发生在旺长期至采收期，发病程度达1～3级，而且该病害的发生、发展与生长期间的降雨量有直接的关系。因此．在雨水丰富的年度要特别注意烟草黑胫病的防治。