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一、红脂大小蠹发生危害情况邢台市红脂大小蠹发生区是在西部太行山区,属太行山中南段,包括邢台县、沙河市、临城县、内邱县四个山区县市,15个乡镇4个林场。总有林面积129.5万亩,油松林面积48万亩,分布在中山地带和部分低山丘陵地带,群众习惯称为深山区,一般海拔500米以上,无霜期175—190天,年降水500—700毫米以上,平均气温11.7—12℃.土壤以褐土、壤土为主,土层一般为20—40厘米。1999年秋发现山区油松发生大面积死亡现象,1999年11月到2000年3月省林业局针对油松死亡现象和山西发生红脂大小蠹情况组织进行了拉网式红脂大小蠹调查。2000年3月在内邱县杏峪首次发现红脂大小蠹虫,经普查,共查出我市红脂大小
First, the occurrence of red pest beetles harmful situation Xingtai red pest occurrence area is in the western Taihang Mountains, Taihang Mountains in the southern section, including Xingtai County, Shahe City, Lincheng County, Neiqiu County four mountain counties, 15 A township 4 forest farm. The total area of 1,295,000 mu of forest, pine forest area of 48 mu, located in the Zhongshan area and part of the hilly areas, the masses used to be called mountainous areas, usually above 500 meters above sea level, frost-free period 175-190 days, annual precipitation 500-700 Mm above average temperature 11.7-12 ° C. The soil is dominated by cinnamon, loam, soil is generally 20-40 cm. In the autumn of 1999, the phenomenon of large-scale death of Pinus tabulaeformis was observed in mountainous areas. From November 1999 to March 2000, the provincial forestry bureau investigated the death of Pinus tabulaeformis and the occurrence of red beetles in Shanxi Province. In March 2000, it was found for the first time in Xingyu Valley, Neiqiu County that there was a red-beetle. After general survey, the total red-fat size