2) index of population trend
种群趋势指数
1.
An approximate variance estimator for index of population trend developed with delta-method and its application;
种群趋势指数的方差近似估计式及其应用(英文)
2.
The fitness of four host plants to striped leaf beetle was quantitatively tested with the selective index (SI) and preference index (PI) , and the index of population trend (I) was used as an important estimate to evaluate the influence of different host plant on the natural population of striped leaf beede.
应用选择系数和嗜食性指数定量测定了4种寄主植物对黄曲条跳甲的适合度,以种群趋势指数综合评价了4种寄主植物对黄曲条跳甲自然种群增长的影响。
3.
The effect of cold storage on the population quality of Trichogrammatoidea bactrae was evaluated from the aspects of their emergence rates, fecundity, wasp longevity and index of population trend.
从冷藏赤眼蜂的羽化率、雌蜂寄生卵量、雌蜂的寿命以及实验种群趋势指数四方面,用生命表技术系统地评价了低温冷藏对卷蛾分索赤眼蜂繁群品质的影响。
3) population dynamics tendency
种群变动趋势
4) the trend index of population
种群趋势指数
1.
The result showed that the trend index of population(I) of C.
结果表明,在自然条件下,垫囊绿绵蜡蚧的种群趋势指数(I)为7。
5) population trend index
种群趋势指数
1.
Comparison of the population trend index, we concluded that sweet potato was the most suitable hosts for Bemisia tabaci.
比较种群趋势指数,甘薯为最适寄主,芥蓝次之,棉花最差。
2.
The population trend indexes for its lst,2nd and 3rd generation were 8.
结果显示，柑桔粉虱第一、二、三世代的种群趋势指数分别为８。
6) trend of growth and decline of population
种群消长趋势
补充资料：种群增长率(见种群出生率)
种群增长率(见种群出生率)
种群增长率见种群出生率。
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