population fluctuation
英 [ˌpɒpjuˈleɪʃn ˌflʌktʃuˈeɪʃn]
美 [ˌpɑːpjuˈleɪʃn ˌflʌktʃuˈeɪʃn]
网络 种群波动; 种群的数量变动
双语例句
- The fluctuation of dominant population was a key factor influencing the complex population fluctuation.
优势种群数量变动是影响混合种群产生波动的主要因素。 - Objective To make gray sequence analysis of the ecological factors to the population fluctuation of Tyrophagus putrescentiae.
目的探讨仓储害螨优势种腐食酪螨种群消长及其与生态因子的关系。 - Population Fluctuation Patterns and Larvae Development of Caragana microphylla Seed Pests in Arid Area of West Inner Mongolia
内蒙古西部干旱区柠条种子害虫田间种群消长规律及其幼虫种群发育进程研究 - By using these results, it is possible to translate the experimental population dynamic model into field population dynamics model so as to accurately predict the field population fluctuation of the pest.
应用以上研究结果，将褐飞虱实验种群动态模型改建成田间种群动态模型，用以预测褐飞虱田间种群数量的消长。 - Studies on the Population Fluctuation and Reproductive Characteristics of Hilly Land Rodents in Middle-south of Shandong Province
鲁中南丘陵地区农田鼠类种群密度消长规律及繁殖特征研究 - Temperature, rainfall, and host fruits were supposed to be the major factors affecting the population fluctuation.
分析表明，影响桔小实蝇种群变化的重要因子是温度、降雨量和寄主种类。 - Studies on the relationships of population fluctuation between rice planthoppers and natural enemies and natural control effects
稻田飞虱与天敌数量消长关系及其自然控制作用考查 - Studies on the population fluctuation of entophytic bacteria 73a in cotton plant
内生菌73a在不同抗性品种棉花体内的定殖和消长动态研究 - Variation in mortality associated with initiation of a population fluctuation is presumed to result primarily from the net effect of a consortium of generalist predators, populations of each which are controlled by factors other than vole densities.
据推测，与种群波动初始密度相关的种群死亡率的差异是由捕食者的净效应（Neteffect）决定的，调控两种群密度的因素均为非密度的其它生态学因子。 - The results of stepwise regression analysis also indicated that the monthly mean temperature and the monthly mean minimum temperature were the major climatic factors influencing the population fluctuation.
逐步回归分析也证实，影响六库桔小实蝇种群月变动的主要气象因子是月平均气温和月平均最低气温。 - Application of Weibull Distribution Function and Rayleigh Density Function in Established Forecast Model of BPH Population Fluctuation
Weibull分布函数和Rayleigh密度函数在组建褐飞虱种群预测模型中的应用 - Preliminary study on the community of Jiangxi structure of pests in Ning Hong tea district and the community population fluctuation
江西省宁红茶区害虫群落结构及种群数量消长初步研究 - This paper describes how to apply the programming method to doing "gray model" for analyzing and forecasting population fluctuation.
介绍了利用编程实现用灰色动态模型进行人口变动分析与预测的方法。 - In 2002, the investigation about predator spider population fluctuation in the fields of Bt transgenic cotton and conventional variety ( control) was made in Jiangsu coastal district.
2002年以常规棉苏棉9号为对照，调查分析了江苏沿海地区转Bt基因棉中棉所29田内捕食性蜘蛛种群消长动态。 - The population fluctuation is resulted from labor force transfer.
河南非农业人口无规则变动是农业与城镇人口转移的结果。 - Study on Model Selection of Population Prediction in Areas with Great Population Fluctuation
人口波动性较大地区的人口预测模型选择&以湖北省保康县为例 - Studies on the population fluctuation and integrate control of whith grubs in the peanut fields
花生蛴螬种群消长及其综合防治研究 - Capitation was related directly to economic development, and influenced directly population fluctuation.
人头税政策不仅直接关系到社会经济的发展，而且也影响到国家人口数量的变化。 - The population fluctuation of pine caterpillar was correlated with its inherent hereditary ( characteristics). But some external factors such as weather also influenced the population fluctuation.
松毛虫种群数量的消长与松毛虫内在遗传特性有关，但气象等外界因子也影响着种群数量的变化。 - Studies on the structure of the spider community and the community population fluctuation in the gan-bei tea garden
赣北茶区蜘蛛群落结构及种群数量消长初步研究 - Analysis on the Population Fluctuation of Rhizosphere Microorganism of Different Disease Resistant Cucumber Varieties
不同抗、感枯萎病黄瓜品种不同生育时期根际微生物数量消长动态分析 - The Population Fluctuation and Bioactivity of Endophytic Fungi from Mangrove Plants in Different Seasons
红树植物内生真菌的种群动态及生物活性 - The process of insect population fluctuation at different season and elevation was also described in detail.
并阐明了不同季节、海拔范围内优势害虫种的演替过程。 - Relationships between different damaged degrees of pine forest and population fluctuation of masson pine caterpillars, Dendrolimus punctatus
马尾松毛虫种群消长与寄主受害程度的关系 - Study on Tendency Prediction of Population Fluctuation of Brandt's Voles
布氏田鼠种群趋势预报指标的研究 - The relation between environmental conditions of reservoirs and species composition, distribution characteristics as well as population fluctuation of zoobenthos was investigated.
并对底栖动物的种类组成、密度、生物量分布特点与水库水环境关系进行了初步揭示； - Specialty niche, specialty scale and environmental carrying, specialty internal and external competition and population fluctuation, and the variety of specialty development all have great influence on students 'development.
专业生态位、专业规模与环境容纳量、专业内外的竞争与种群波动、专业体系的多样性发展，都对学生的发展有着重要影响。