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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。
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The economic loss of one aphid is about 0.0695 % .
1头蚜虫经济损失率=0.0695%。
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The larvae prey upon small aphids .
这种幼虫以小蚜虫为食。
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There must be aphids somewhere around .
这附近一定有芽虫。
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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
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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
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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
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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。
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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
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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
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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
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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。
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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
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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
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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
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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
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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
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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。
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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
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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
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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
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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
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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
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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
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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
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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
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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
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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
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RAPD analysis of different forms of the green peach aphid
桃蚜不同蚜型DNA多态性的RAPD研究
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Study on the population dynamics prediction of broad bean aphids
蚕豆蚜数量动态预测研究