1) density of pine caterpillars
松毛虫虫口密度
2) population density
虫口密度
1.
Relationship between the number of resin exits caused by Hylobitelus xiaoi larvae and their mean population density in slash pine plantations;
萧氏松茎象流脂点与虫口密度的关系
2.
Correlation between the attacking rate and population density of Hylobitelus xiaoi larva;
萧氏松茎象幼虫有虫株率与虫口密度相关关系
3.
Influence of pruning on the population density of Ceroplastes japonicus and growth of trees;
修枝对日本龟蜡蚧虫口密度及树木生长的影响
3) insect density
虫口密度
1.
Low insect density,low attacked trees rate,higher crowded degree;Ⅱ.
通过对30块样地资料的聚类分析,将平陆县锈色粒肩天牛为害分布类型划分为5类:第 类,低虫口密度、低被害株率、较高拥挤度;第 类,较高虫口密度、较高被害株率、高拥挤度;第 类,虫口密度、中等被害株率、较低拥挤度;第 类,较低虫口密度、较低被害株率、低拥挤度;第 类,高虫口密度、高被害株率、中拥挤度。
5) pine caterpillars
松毛虫
1.
DNA extraction of pine caterpillars for ISSR-PCR reaction;
适于ISSR-PCR扩增的松毛虫基因组DNA的提取
2.
Factors influencing the population dynamics of pine caterpillars;
影响松毛虫种群动态的因素
3.
Prevention experiments on pine caterpillars of spraying Bt biotic pesticides by plane;
飞机喷洒苏特灵Bt生物杀虫剂防治松毛虫试验
6) Dendrolimus tabulaeformis Tsai et Liu
油松毛虫
1.
The genetic diversity of Dendrolimus tabulaeformis Tsai et Liu in forests of different stand types;
不同林分类型下油松毛虫(Dendrolimus tabulaeformis Tsai et Liu)种群遗传多样性
2.
Integrated Control Measures of Dendrolimus tabulaeformis Tsai et Liu;
油松毛虫的综合防治措施
3.
Content of protein and activity of polyphenol oxidase (PPO) in the body of pine caterpillar, Dendrolimus tabulaeformis Tsai et Liu infected by its pathogenic germ, Beauveria bassiana were studied by the method of spectrophotometry.
采用分光光度法测定了油松毛虫(Dendrolimus tabulaeformisTsai et Liu)3~5龄幼虫被病原物白僵菌(Beau-veria bassiana)感染后,其体内蛋白质的含量和多酚氧化酶活性的变化;结果表明,被白僵菌感染后1~8d,虫体内蛋白质含量持续下降,而未感染的则变化不大;多酚氧化酶(PPO)的活性呈现出先升高后下降的趋势。
补充资料：非密度制约因素(见密度制约因素)
非密度制约因素(见密度制约因素)
l焦非密度制约因素见生态因素、密度制约后
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条