Aphid resistance breeding 抗蚜育种
aphid-resistance 抗蚜虫
aphid resistance evaluation 抗蚜性评价
Aphid-resistance alfalfa line 抗蚜苜蓿新品系
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Applying mixed fertilizer can also improve cotton's aphid resistance.
施混合肥也能提高棉株的抗蚜力。
Through experiment in both small and big area of fields, the author researched the influence on cotton aphid resistance and endurance by different kinds of fertilizer and the applying quantity.
小区试验后，大田试验，观察不同肥类及施肥量对棉株抗蚜和耐蚜力的影响。结果表明：单纯施氮肥会明显降低棉株的抗蚜和耐蚜力，并且随着氮肥量的增加而急骤下降；
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。
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