摘要
对禄丰县思茅松毛虫 (DendrolimuskikuchiiMatsumura)的生物学特性观测表明 :思茅松毛虫在禄丰县 1年发生 1代 ,以 4龄幼虫越冬。幼虫在林分内的空间分布型为聚集分布 ,m 与 x之间的直线回归关系式为 :m =0 80 4 0 +1 2 873 x ,最适抽样数量为 :N =180 4 / x +2 8 73。组建了思茅松毛虫 2个世代的自然种群平均生命表 ,揭示了该虫在禄丰县种群消长趋势 ,其指数 (I)为 0 33,呈下降趋势。
The results of observation on Dendrolimus kikuchii Matsumura in Lufeng of Yunnan showed that the pest occurred one generation a year, and larva of 4 period lived through the winter The larva were clustered distributed in forests The linear regression between m * and x was m * = 0 804 0+1 287 3x, the optimum sampling amount was N = 180 4/x+28 73 The life table of D kikuchii including the natural population of two generations was worked out, which revealed the ebb and flow trend of Dendrolimus kikuchii population, the index I was 0 33, showing the trend of decline This study provided a basis for effective control of D kikuchii
出处
《云南林业科技》
2002年第1期61-64,共4页
Yunnan Forestry Science and Technology
基金
云南省应用基础研究重点基金项目 (98C0 0 7Z)
关键词
禄丰县
思茅松毛虫
生物学特性
分布
云南
Dendrolimus kikuchii
biological characteristics
distribution
