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凤县是陕西省花椒主产县之一,具有悠久的栽培历史。凤县产的“大红袍”花椒具有粒大、色艳、肉厚、味浓等优良特性,在国内外享有很高的声誉。但近年来花椒锈病严重发生,极大地影响了花椒的产量和品质。因此,我们于1987年10月对该病的为害情况进行了调查,现总结如下: 一、发生情况 据调查,凤县河口、双石铺、凤州和温江寺等乡花椒锈病发生普遍严重。其中,河口村下坝乡病株率达100％,病情指数达78.5。受害轻的十里店病株率也达93％,病情指数为35。罹病植株叶片大量脱落。曾在下坝村调查70株,落叶率在50％以上的达48株,有的植株叶片可全部落光,适宜条件下又第二次发芽,新叶再次感染,导致树
Fengxian is one of the main producing county of Shaanxi Province pepper, has a long history of cultivation. Feng County produce “Dahongpao” pepper with large grain, color Yan, Rouhou, Wei Nong and other fine features, both at home and abroad enjoy a high reputation. However, in recent years, the severe occurrence of pepper rust greatly affects the yield and quality of pepper. Therefore, we conducted a survey on the damage of the disease in October 1987 and are summarized as follows: I. Occurrence According to the survey, the incidence of pepper rust in the towns of Fengxian Hekou, Shuangshibu, Fengzhou and Wenjiang Temple is generally serious. Among them, the Hekou Muxiaba Township diseased plants rate of 100%, the disease index of 78.5. Victims of light Shih Tung shop strain rate reached 93%, disease index of 35. Diseased plants leaves a lot of fall off. In Xiaba village, 70 plants were surveyed, and the rate of deciduous leaf was more than 50%, reaching 48, and some of the plants could all fall out of light. Under suitable conditions, they germinated again and the new leaf was infected again,