【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。研究结果为有效控制当地滇油杉林的思茅松毛虫危害提供了重要依据更多还原

【Abstract】 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更多还原