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1978年5月20日至22日省林业局在随县召开了生物防治松毛虫工作会议,各地(市)、县代表40余人参加了会议.省林业局局长杨致远同志出席了会议并讲了话.自1977年入冬以来,我省长期干旱,气温较高,对白僵菌繁殖造成不利条件,致使松毛虫越冬代未能控制.加上今春大部分地区仍干旱少雨、湿度低、白僵菌不能发挥应有的效应,造成全省性的虫害大暴发.发虫面积达750万亩,其中严重的虫害面积达378万亩,严重地威胁着马尾松的生长.自三月初开始全省林业战线广大干部、职工
May 20-22, 1978 Provincial Forestry Bureau held a working meeting on biological control of pine caterpillars in Suixian County, attended by over 40 representatives from all over the country (city) and county. Comrade Yang Zhiyuan, director of the provincial forestry bureau, attended the meeting and talked about Since the beginning of winter in 1977, long-term drought in our province, the higher temperatures, adverse conditions for the breeding Beauveria bassiana, resulting in the control of the pine caterpillars over the winter, plus most of the spring this year is still dry and humid, low humidity, white stiff Bacteria can not play its due effect, causing the province’s pest outbreaks hair insect area of 750 mu, of which 378 mu of serious pests area, a serious threat to the growth of massoniana. Since early March the province The forestry front of the broad cadre, worker