油松平均针叶龄与松毛虫蛹质量的数学关系  

Mathematic Relation of Mean Needle Age of Pinus tabulaeformis and Pupal Mass of Pine Caterpillar

作　　者：齐淑艳 张凤来 王振飞 朱丽艳 

机构地区：[1]辽宁省朝阳县六家子林场,辽宁朝阳122625 [2]朝阳县东五家子林场 [3]朝阳县林木种苗站

出　　处：《防护林科技》2007年第B05期31-32,共2页Protection Forest Science and Technology

摘　　要：探讨了松毛虫蛹质量与针叶危害程度之间的数学规律,得出直线方程为:y=0.946 589+0.464 559x。揭示出松毛虫蛹质量与针叶危害程度之间的内在联系,即松针龄越小,松毛虫蛹质量降低,产卵量减少;反之蛹质量增加,产卵量增大。We discussed maths law of pupal mass and damage of needle which can be expressed by the equation： y = 0. 946 589 ＋ 0. 464 559x. The internal relationship between pupal mass of pine caterpillar and harming degree of needle leaf are revealed. The younger the pine needle age,the lower the pupal mass and fecundity of pine caterpillar;The older the pine needle age,the higher the pupal mass and fecundity of pine caterpillar.

关 键 词：松毛虫 蛹质量 平均针叶龄 

分 类 号：S791.254[农业科学—林木遗传育种]