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①纵坑切梢小蠹和横坑切梢小蠢在辽宁省内常常是同时发生于油松、赤松等林分中的。为方便起见,本调查把它们混在一起进行统计。②从为害的实例调查中,可以看出7林班的21和20小班的一部分幼松,被松小蠹集中侵害后,几乎已全部无成材希望,它们将被列为薪炭材砍伐并再行更新的对象,性质是严重的。③松小蠹的补充营养阶段,虽是分散到松梢部进行为害,而其繁殖阶段(仙人洞约在3月上旬至6月中旬)的虫口却极力集中,因此认为,这是予以彻底消灭的好机会。④通过本項调查,认为松小蠹并不是不能消灭的害虫,森林经营部门只要严格控制其发生基地,全面贯彻清理林场的操作规程,就完全有防止或彻底地消灭它们的可能。⑤根据仙人洞林场的调查,未见有松小蠹在繁殖阶段侵入活立木的树干部分产卵的,即使是极衰弱的活立木上也没有。(这点与有些文献的记载稍有出入,谨供参考。)⑥调查中发现郭公虫(Thanasimus formicarius L.)的活动极为活跃,曾于5月26日捕得一头雌虫,置培养皿内进行室内饲育,直到9月9日才死亡。共计产卵220粒;吃掉松小蠹254头,平均每天能吃2.4头,最多时一天能吃9头。是天敌中极有前途的一个虫种。⑦本文所列数字,均以新的侵入孔作为统计依据,在统计前也曾多次检查过坑道内的虫口数,故认为各項统计基本上是正确的。⑧本文所提及的防治措施,对老、幼松林均有分布,且正在或将进行抚育采伐和主伐的林场较为切用。但对于进行更新采伐的老林经营工作也可以供作参考。⑨对松小蠹的防治,除应用本文所提出的方法来控制其发生基地外,初步认为以E-605、666、DDT 等药液或粉剂及ⅢA666烟剂来防治松小蠹是比较費人力和物力而且效果并不显著,最好避免采用。
① vertical pit-cut beetles and cross-pit cut small stupid in Liaoning Province is often occurs at the same time in the Pinus tabulaeformis, Pinus kaempferi and other forest. For the sake of convenience, the survey mixed them together for statistics. ② From the investigation of the victimization case, it can be seen that part of the 21 and 20 small classes in the 7-forest class, after being concentratedly infested by pine moths, have almost no hope of becoming promising. They will be listed as firewood cut and re-run The nature of the updated object is serious. ③ pine beetle nutritional supplementation stage, although scattered to the pine shoot damage, and its breeding phase (immortal hole about early March to mid-June) but the population is strongly concentrated, so that this is to be completely eliminated Good opportunity. Through this survey, pine beetle is not considered to be a pest that can not be eliminated. As long as the forest management department strictly controls its place of occurrence and fully implements the rules and regulations of clearing forest farms, it is entirely possible to prevent or completely eliminate them. ⑤ According to the fairy cave farm investigation, there is no pine beetles invade the trunk of the living stage of the breeding stage spawning, even if it is extremely weak on the live tree did not. (This is a bit different from that of some documents.) ⑥ In the survey, Thanasimus formicarius L. was extremely active. On May 26, a female was caught and placed in a petri dish Indoor feeding, until September 9 died. A total of 220 eggs spawn; eat pine moth 254, an average of 2.4 a day to eat, up to 9 days a day to eat. Is a natural enemy in a promising species. ⑦ The numbers listed in this article are all based on the new intrusion holes. The number of insects in the tunnel has also been checked many times before the statistics. Therefore, all the statistics are basically correct. ⑧ prevention and control measures referred to in this article, the old and young pine forest are distributed, and is being or will be carried out felling and cutting of the forest far more appropriate. However, the management of old forests for logging updates can also serve as a reference. ⑨ prevention and treatment of pine beetles, in addition to the application of the method proposed in this article to control the occurrence of its base, initially that the E-605,666, DDT and other liquid or powder and Ⅲ A666 smoke agent to control pine beetle is more manpower And material resources and the effect is not significant, it is best to avoid using.