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浅谈速生丰产林病虫害的综合防治张素娟李荣富吴风礼(武强县林业局)屈金亮(河北省森防站050081)从1990年秋开始至今武强县营造了近6000hm2速生丰产林,85%是杨树,品种以毛白杨和山海关杨为主。由于结构较单纯,对病虫害自然制约能力差,一旦发生...
Comprehensive Prevention and Control of Diseases and Insect Pests in Fast-growing and High-yielding Forest Zhang Sujuan Li Rongfu Wu Fengli (Forestry Bureau of Wuqiang County) Qu Jinliang (Forest Defense Station of Hebei Province) Varieties to poplar and Shanhaiguan Yang-based. As the structure is simpler, natural control of pests and diseases is poor, in the event of ...