Scientists at Rothamsted Research have been monitoring the flying form of all aphid species for 42 years.
科学家在洛桑的研究一直在监测的飞行形式的所有蚜虫物种42岁。
All these laid down a soild foundation for researches on aphid metabolism, identification of insecticide, the physiological and biochemical resistance mechanism of crops to aphid.
这为进一步深入研究蚜虫生理代谢、测定杀虫剂效果和探讨作物抗蚜生理生化机理等奠定了实验技术基础。
The result suggested that they all had anti-cotton aphid action.
结果表明，三种次生物质均对棉蚜有一定的抗生性。
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