aphids

The larvae prey upon small aphids .

这种幼虫以小蚜虫为食。

Study on the control method of aphids in alfalfa industrial production

苜蓿产业化生产中蚜虫危害及防治方法研究

The aphid is now laying waste to the wheat and barley fields .

蚜虫正在毁掉一片片的小麦和大麦田地。

There must be aphids somewhere around .

这附近一定有芽虫。

The economic loss of one aphid is about 0.0695 % .

1头蚜虫经济损失率＝0.0695%。

Development of Mechanism of Resistance of Grain Aphids to Various Wheat

不同小麦品种对麦蚜抗性机制研究进展

The Exponent Method of Aphid Damage Investigation end Its practical Application

棉花蚜害指数调查法及在实践中的应用

The analysis can help the rational control of green tobacco aphid .

分析结果对指导烟蚜防治有一定帮助。

Effects of aphid population on the major economic characters of soybean

蚜虫数量对大豆主要经济性状的影响

Study on the optimum spraying time and economic threshold of soybean aphid

大豆蚜防治适期与防治指标研究

Element Composition of Wheat Leaf Surface and Its Relationship with Aphid Resistance

小麦叶片表面化学元素组分及其与抗蚜性关系研究

The result is very important for the control of sugarcane aphids .

这对甘蔗蚜虫的防治和培育抗蚜虫的甘蔗品种具有重要指导意义。

Analysis of Meteorological Factors and Forecast of Population Dynamic Changes of Wheat Aphid

小麦蚜虫种群消长气象影响成因及预测

A decision model for optimal thresholds of biological control in cotton aphid

棉蚜最优生物防治指标决策模型

Study on field population dynamic state of rape aphid and control measurement in late stage

油菜蚜虫田间种群动态和后期防治的研究

The development of gene flow GIS of wheat aphids

麦蚜基因流地理信息系统的研制与开发

Aphid resistant characteristics and the relations with physical characteristics of sorghum

不同基因型高粱植株的物理性状与抗蚜性的关系

Fungal pathogens are important natural biological control agents of aphids .

病原真菌是蚜虫的重要自然控制因子。

Study on the Synthetic Decision System for the Resistance of Crop Varieties to Aphid

作物品种抗蚜性综合决策体系研究

Forecast the Population Dynamics of the Corn Aphid by Fuzzy Regression Model

应用模糊回归模型预测玉米蚜的种群动态

The Natural Enemy of Aphid and Its Population Dynamic State in Maize Field

春玉米田蚜虫种群的数量消长及空间动态

Application of foreign aphids resource on sorghum breeding in jilin province

外国抗蚜资源在吉林省高粱育种中的应用

Effects of Environment Factors on Epidemic Coefficient of Peanut Aphid

环境因子对花生蚜虫流行程度的影响

A Study of the techniques on the control of tobacco virus spread by aphids

烟草蚜传病毒病的综合防治技术研究

A Study on Field Selecting Technique of Wheat Varieties for Resistance to Wheat Aphid

冬小麦抗蚜品种田间筛选技术研究

Mechanism of Formation of Plant Virus Compound Transmitted by Aphid

蚜传植物病毒传播复合体形成机理

Analysis of factors affecting aphid transmission of maize dwarf mosaic virus

影响麦二叉蚜传播玉米矮花叶病毒效率的因素分析

Study on the lower and upper development thermal thresholds of aphids in vegetables

萝卜蚜和桃蚜最大发育速率温度的研究

RAPD analysis of different forms of the green peach aphid

桃蚜不同蚜型DNA多态性的RAPD研究

Study on the population dynamics prediction of broad bean aphids

蚕豆蚜数量动态预测研究