The fertilization test on the trees damaged by Tomicuspiniperda has been done in the forest of Pinus yunnanensis in 1994 and 1995 in Shigoutou village, Citongguan office, Beicheng town of Yuxi city.
1994年和1995年在玉溪市北城镇刺桐关办事处石狗头村，云南松纵坑切梢小蠹虫危害的云南松林中，进行了施肥试验。
The fertilization test on the trees damaged by Tomicuspiniperda has been done in the forest of Pinus yunnanensis in 1994 and 1995 in Shigoutou village, Citongguan office, Beicheng town of Yuxi city.
1994年和1995年在玉溪市北城镇刺桐关办事处石狗头村，云南松纵坑切梢小蠹虫危害的云南松林中，进行了施肥试验。
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