2) grasshopper population
蝗虫种群
1.
Study on the relationship between plant diversity and grasshopper population in the steppe of Xilinguole;
锡林郭勒典型草原植物多样性和蝗虫种群的关系
4) insect population
昆虫种群
1.
Edge correction of point pattern analysis'function and its application on spatial pattern analysis of insect population
点格局分析函数的边缘校正及其在昆虫种群格局分析中的应用
2.
The insect populations in the fields of insect-resistant transgenic Bt cotton(BT) and in the fields of conventional non-transgenic cotton(CV) in the coastal agricultural region of Jiangsu Province were surveyed and systematically compared in the year of 2004—2005.
2004—2005年,在江苏沿海地区采用系统调查与面上普查相结合的方法,比较分析转Bt基因抗虫棉(中棉所44)与常规棉(中棉所17)2类棉田昆虫种群的差异。
3.
This paper reviews the research methods of spatial pattern of insect population based on the analysis of four main entries of the research methods, which are probability model, dispersion indices, regression model and geostatistical model.
本文分别从概率分布模型拟合法 (频次检验法 )、分布型指数法、回归模型法及地学统计法 ( Geostatistics) 4个方面对昆虫种群空间格局的研究方法进行了评述 ,比较了不同方法的优缺点 ,从而有利于这些方法的进一步应用。
5) ladybeetle populations
瓢虫种群
1.
The three kinds of ladybeetle have blance populations the quantity of ladybeetle populations in trans Bt gene zoophobous cotton field are higher than that in conventional cotton fields.
以常规棉品种为对照,通过对江苏沿海地区Bt棉田内瓢虫种群消长动态的调查分析,明确了龟纹瓢虫、七星瓢虫和异色瓢虫为当地棉田的优势种群,其中龟纹瓢虫占种群比例的95%以上;两类棉田内三种瓢虫各占瓢虫总虫量的分布比例相近,差异不显著;与常规棉田比较,转Bt基因抗虫棉田的龟纹瓢虫、七星瓢虫和瓢虫总量分别比常规棉田增加63 76%、1250%和66 35%,经t检验,差异达极显著水平;异色瓢虫比常规棉田减少15 38%,t检验的差异不显著。
6) pest population
害虫种群
1.
Influence of individual migration on the evolution of resistance of pest population to insecticides has been studied based on population genetics by modeling.
模拟结果表明 ,迁入比例对害虫种群抗性演化的影响存在一定的阈值。
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