principal distribution parameter

Effects of different host plants on population parameters of Liriomyza sativae;

不同寄主植物对美洲斑潜蝇种群参数的影响

Influence of resistant rice varieties to the population parameters of Nilaparvata lugens and Sogatella furcifera.;

抗性水稻品种对褐飞虱和白背飞虱种群参数的影响

In order to investigate the resisitence potentials of Scirpophaga incertulas(Walker)to transgenic Bt rice,the population parameters of the 3rd generation of S.

为了了解水稻重要害虫三化螟Scirpophagaincertulas(Walker)对转Bt基因水稻产生抗性的潜在风险,本文利用自然种群生命表,研究了第3代三化螟在转Bt基因杂交稻汕优63及非转Bt基因杂交稻汕优63上的种群参数。

Effect of temperature on the experimental population parameter of Aphis medicaginis;

温度对苜蓿蚜试验种群参数的影响

Effect of Spodoptera exigua multicapsid nucleopolyhedrovirus on Trichogramma confusum: Comparison of population parameters and PCR detection;

甜菜夜蛾核型多角体病毒对拟澳洲赤眼蜂的影响:种群参数比较和PCR检测

The population parameters and biological characteristics of high effective cypermethrin resistance and trichlorphon resistance strains of Aedes albopictus;

白纹伊蚊抗高效氯氰菊酯和抗敌百虫品系的生物学特性及种群参数

Based on field experiment,the effects of the seabuckthorn flexible dam on water flow resistance are studied,and the effects of different planting parameters of the seabuckthorn flexible dam on water level and flow velocity in gully channel are discussed.

本文通过野外试验,研究了沙棘柔性坝对水流的阻滞作用,探讨了沙棘柔性坝各种植参数对沟道水流水位及流速分布的影响。

Effects of Plant Nutrition on Behavior, Development and Population Parameters of Bemisia Tabaci (Gennadius);

植物营养对烟粉虱行为、发育和种群参数的影响

Effects of Sublethal Dose of Spirodiclofen on the Population Parameters of Tetranychus cinnabarinus Boisduval

杀虫剂螨危的亚致死剂量对朱砂叶螨种群参数的影响

Influences of Population Density of Plantago Virginical.on Its Morphological Parameters;

北美车前种群密度对形态参数的影响

PID controller parameters optimization based on improved ant colony algorithm

一种用于优化PID参数的改进蚁群算法

Parameters selection of SVM based on extended PSO algorithm

基于一种改进粒子群算法的SVM参数选取

Parent effects and estimation of genetic parameters for three Japanese flounder breeding populations

三个牙鲆育种群体亲本效应及遗传参数估计

Parameter identification for control systems based on chaotic ant swarm algorithm

一种基于混沌蚂蚁群算法的系统参数辨识方法

ACA for Statistical Parameters Estimation in SAR Images

一种用于SAR图像统计模型参数估计的蚁群算法

A STUDY OF THE POPULAION DYNAMIC OF BROWN PLANTHOPPER Ⅱ.SOME BIOLOGICAL PARAMETERS AFFECTING FIELD POPULATION DYNAMICS

褐飞虱种群动态的研究 Ⅱ.影响田间种群数量变动的一些生物学参数

Two-Parameter Quantum Groups of Type E-Series & Restricted Two-Parameter Quantum Groups of Type D;

E型双参数量子群和限制的D型双参数量子群

Parameters of metapopulation dynamics of wild soybean originated from different latitudes and their significance of ecological adaptation

不同纬度来源的野生大豆拟种群动态参数及其生态适应意义

ON SOME BIOLOGICAL PARAMENTERS AND SIMULATION MODELS OF NATURA L POPULATION DYNAMICS OF DIORHABDA RYBAKOWI WEISE

白茨一条萤叶甲自然种群动态的生物学参数及模拟模型

Study on the Estimation of Parameters of the 2-species Predator-prey Model;

两种群食饵—捕食者模型的参数估计及其性质的研究

Catastrophe Analyses Parameter Estimate and System Analyses on a Population Model of Prey Intimidated by Predator;

天敌胁迫下食饵种群动态模型的突变分析、参数估计及系统分析

Studies of Population Quantity Dynamics of an Endangered Plant Based on Cellular Automata;

基于元胞自动机的濒危植物明党参种群数量动态研究

Changes in ecological parameters and population dynamics of Saurida undosquamis in Southern Taiwan Strait

台湾海峡南部花斑蛇鲻生态学参数及其种群动态

Application of Micro-Genetic Algorithm to Parameter Optimization for Electronically Controlled Diesel Engines

微种群遗传算法在电控柴油机控制参数优化中的应用

Life table parameters of imidacloprid resistant and susceptible populations of Nilaparvata lugens Stl(Homoptera:Delphacidae) under sublethal doses of insecticides

不同药剂亚致死剂量对褐飞虱不同种群生命表参数的影响