摘要
对甘肃省子午岭林区合水林业总场人工油松(Pinus Tabulaeforomis)林地内中华鼢鼠(Myospalaxfontanieri)危害的调查表明,中华鼢鼠种群密度与危害幼树死亡株率成线性相关:y=18.255x-2.715;中华鼢鼠防治经济阈值为 2.92 %、理论防治指标为 5.84 %(均以被害株率表示);并依调查结果提出了当年发生量预测方法和危害等级划分标准。
An investigation about damage of Myospalax fontanieriin Pinus tabulaeformis plantation in Heshui forest was carried out.The result showed that the relationship between population density of Myospalax fontanieri and death rate of trees was : y=18.255x-2.715, and the economic threshold was 2.92 % ,the theory control criteria was 5.84 %.In the mean time, a method of forecasting was given out according to the investigation.
出处
《甘肃农业大学学报》
CAS
CSCD
2004年第5期559-561,共3页
Journal of Gansu Agricultural University
基金
甘肃省林业厅"森林鼠害综合防治技术研究"项目(GLK-226)
关键词
油松
中华鼢鼠
防治指标
Pinus tabulaeformis
Myospalax fontanier
control criteria
