In the stage of field population study, most study focus on the congregation and immigration of insect population, the investigation of natural population quantity.
在田间种群研究阶段，主要进行种群聚集与扩散迁移的研究和自然种群的数量调查。
The virulence characteristics of brown planthopper, Nilaparvata lugens Stal, from paddy field population and greenhouse population collected in late rice field last year was compared.
比较研究了当年采自田间的褐飞虱种群与上一年虫源在室内越冬繁殖种群对不同抗虫品种的致害性差异。
Thereinto, the activity level of CartE in Hongtang L. erysimi population is the highest among the four field populations, which is tally to the result of drug-fast test on each population.
各抗性种群的羧酸酯酶的活性水平明显高于敏感种群，其中以洪塘菜缢管蚜种群的羧酸酯酶活性水平最高，这跟各种群的抗药性监测结果亦相吻合。
Agile Innovators make up a small population of folks in the Agile arena who are very experienced in this field and very positive about Agile.
敏捷创新者构成了敏捷界很小众的一部分，他们在敏捷领域的经验非常丰富，并且对敏捷的信念非常坚定。
According to available information and the author's field investigations, at this stage, the impact and consequences of rural population flows is very complex.
根据现有资料和作者的实地调查，在现阶段，农村人口流动的影响和后果是十分复杂的。
The Polarization and Population difference of the three-level atom, driven bya microwave field and interacted by a strong short laser pulse, is studied by me-ans of semiclassical theory in the paper.
本文采用半经典理论方法研究了在短脉冲作用下，被共振微波场驱动的三能级原子极化强度振幅和粒子数差随时间的变化。
A field experiment was conducted to study effects of root pruning at returning green stage on population structure, soil water and yield formation of winter wheat.
通过田间试验研究了返青期不同程度根修剪处理对冬小麦群体结构、土壤水分及产量形成的影响。
In the field of mathematical ecology, it is important to use mathematics to study epidemic dynamics and population ecology.
在数学生态学领域，用数学的方法研究传染病动力学和种群生态学很受重视。
In the hierarchical structure, population ecology is foundation of others grows up and the most active field, but the organizational ecosystem is the important new research topic.
虽然组织种群生态学是组织生态学最活跃的领域，也是研究的核心和基础，但是组织生态系统则是新的重要研究领域。
The study of morphological plasticity is presently the important field of clonal plant population ecology.
形态可塑性是当前无性系植物种群生态学研究的重要领域。
Migration, as a result of the rural industrialization and the population urbanization, is the key project in the economic study field.
人口流动作为乡村工业化、人口城市化进程中的必然现象，一直是经济学研究的一个重要课题。
Foundation pits generally gather at the field with large population and construction density and small spatial scale.
基坑工程一般集中在城市人口密集、建筑密度大的狭小场地。
AIM: To investigate the relationship between electromagnetic field (EMF) exposure and dementia based on the population survey.
目的：通过人群调查探讨电磁场暴露与痴呆的关系。
Some Suggestions for the pest forecast and control were also brought forward based on the characteristics of the pest population dynamics and distribution in the direct seeded rice field.
根据直播稻区稻水象甲种群动态和分布特点，提出了相应的虫情调查和测报防治建议。
Plants, especially in population of two years, have bigger bodies in low and middle densities than that in high densities in field. It's the effect of density dependence.
人工种群植株不同密度间个体生长差异显著，尤其是人工二年生种群植株中、低密度区比高密度区个体生长得较大，体现了密度制约的效应。
European markets, because the wide field of use, using a population of nearly 100 million people;
欧洲市场大的原因在于使用领域广，使用人口接近 1 亿人；
This paper presents the principles and application of PPG biplot model to the field of human population genetics for analyzing the population genetic structure.
提出了分析人类群体遗传结构的PPG双标图模型的基本原理及其应用。
The effect of several pesticides on wheat aphids and their natural enemies as well as on pests and natural enemies population in maize field was tested indoors and in the field.
在室内和田间测试了几种杀虫剂对麦蚜、天敌及后茬玉米田主要害虫与天敌种群的影响。
To study regional average stress field, we need to choose a population of focal mechanism solutions of earthquakes in the massifs where there are significant tectonic structures.
选择具有地震构造意义的地块或地震带内大量地震的震源机制解研究区域平均应力场。
The growth of population and the oil field construction land are the driving forces of the increase of the construction land.
而建筑用地面积变化主要由人口的增长以及油田建设用地增加所决定。
Results The 25 foci malaria outbreak occurred in the quarry, tile field and the peripheral villages with mass of mobile population from 1982 to 1994.
结果1982～ 1994年2 5个疟疾暴发点均发生在流动人口聚居的采石场、砖瓦厂及邻近村庄。
Relationship between electromagnetic field exposure and dementia: a population-based case-control study.
电磁场暴露与痴呆：基于人群的病例对照研究。
Establishing a Control field increases the Mind Unit score for your faction based upon the human population density encompassed by the field.
建立一个控制场来给你的faction提升MindUnit的得分，这基于场中所包含的人口密度。
Since the development of Human Genome Project, the population-based research has become a hot topic in the genetics field.
自人类基因组计划开展后，以人群为基础的研究成为遗传学研究的一个热点。
Soil and water erosion in hilly areas of the middle Sichuan Basin is extraordinary seriously in China. This area has an enormous population, but the field is not enough.
川中丘陵区是我国水土流失最为严重的区域之一，人口众多，耕地稀少，土壤侵蚀严重，因此被列入长江上游水土流失重点防治工程的核心区域。
The atomic population evolution vs. time in the system of two two-level coupling-atoms interacting with squeezed coherent light field is investigated.
利用全量子理论，在相互作用绘景中研究了两个耦合二能级原子与单模压缩相干态光场相互作用系统粒子布居几率的时间演化规律；
In addition, the quantitative dynamics of population and the densities difference of S. exigua on different host plants in the field were found out.
查明了南宁市郊区甜菜夜蛾周年种群数量动态规律及不同寄主上的虫口密度差异；
Research on this new phenomenon can expand a new field of vision in themovement of population.
研究农村外出劳动力回流现象，能够拓宽对人口流动研究的视野。
Research on this new phenomenon can expand a new field of vision in themovement of population.
研究农村外出劳动力回流现象，能够拓宽对人口流动研究的视野。
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