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桃源县陬溪区在毛主席革命路线指引下,在华主席的亲切关怀下,从1971年全国林业工作会议以来,成片造林10万亩.其中杉木林7万亩,采取等高挖壕,壮苗带土移栽,深挖抚育和施肥埋青等措施,生长茁壮,现在郁闭成林的5万亩.此地土壤气候大体适宜杉木生长,但土层浅薄,雨量不均,夏季高温,秋季干旱,冬季大风,也是杉木生长的不利因素,因此个别林分发生病害.为了模索杉木病害的种类和发病情况,我们于1977年3月到一些公社林场和大队林场进行了初步调查,每项内容各调查100株,然后带回标本进行鉴定.通过调查和鉴定,认为这里主要是发生细菌性叶斑病(Pseudomonas Cunin-gnamue)和杉木炭疽病(Glomerella
Under the guidance of Chairman Mao’s revolutionary line and under the gracious care of Chairman Hua, Taixi District of Taoyuan County has made 10 million mu of afforestation since the National Forestry Conference in 1971. Among them, 70,000 hectares of Chinese fir forest have been trenched in contour trenches, Strong seedlings with soil transplanting, digging and fertilization buried deep and other measures, grow robust, now closed forest 50,000 acres. The soil climate is generally suitable for the growth of Chinese fir, but shallow soil, uneven rainfall, high temperature in summer, Autumn droughts and winter gales are also the unfavorable factors for the growth of Chinese fir, so some stands broke out.In order to trace the types and incidence of Chinese fir diseases, we conducted preliminary surveys on some communal forest farms and brigade farms in March 1977. Each item The contents of the investigation of 100 strains, and then returned to the specimen identification.Through investigation and identification, that here is the main occurrence of bacterial leaf spot (Pseudomonas Cunin-gnamue) and Chinese fir anthracnose (Glomerella