The results sho wed that the POD activity was raised, MDA content was decreased, nutrient of P a nd K was improved, balance between K + and Na + was maintained and salt tolera nce of cotton was significantly strengthened by applying fertilizer of P and K.

• 结果表明 ,合理施用P、K肥能提高棉花体内过氧化物酶 (POD)活性 ,减少丙二醛 (MDA)含量 ,改善P、K营养 ,维持K+ 、Na+ 平衡 ,显著增强棉花耐盐性 ;