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；

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