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在发生炭疽病的油茶林內进行药剂防治的同时,探索砍除严重老病株的效果。选定发病程度相等的試驗林两块,每块面积2亩,各有油茶树約200株。1963年冬季齐地砍除試驗区內病株及两区隔离带中的严重病株。 結果指出,无論对照区或砍除区,1964年发病均比1963年严重。主要与同期雨量多寡有关(表1)。比較近年来各月的雨量和发病情况,发現1963年发病較輕,而該年6月的雨量也較1961、62及64年有显著减少。因此,6月份的一定雨量
In the occurrence of Anthrax Camellia Lin Pharmacy prevention and control at the same time, to explore the effect of severely cut the old strain. Two selected experimental forests of the same degree of disease, each with an area of 2 mu, each has about 200 oil tea trees. In the winter of 1963, the diseased plants in the experimental area and the severely diseased plants in the two zones were excised. The results showed that, regardless of the control area or cut off area, the incidence in 1964 than in 1963 was serious. Mainly related to the amount of rainfall over the same period (Table 1). In comparison with the monthly rainfall and incidence in recent years, it was found that the incidence was relatively mild in 1963 and the rainfall in June of that year also dropped significantly from that in 1961, 62 and 64. Therefore, some rainfall in June