棉花雹灾后追肥及中耕对其生长发育，植株Ｎ、Ｐ的吸收及产量均有较大的影响。中耕可促进雹灾棉腋芽的生长，特别在追施Ｎ、Ｐ肥的基础上中耕有助于促进植株对Ｎ、Ｐ的吸收积累，促进雹灾棉早现蕾、早开花，增加铃数提高产量。单施Ｎ肥的增产效果不及Ｎ、Ｐ混施，施Ｎ或Ｎ、Ｐ混施不中耕的又不及施Ｎ肥中耕的增产作用大。因此，棉花雹灾后应在及时中耕松土的基础上及早追施Ｎ、Ｐ肥，以提高产量、减少损失 Cotton topdressing and cultivating have great influence on the growth and development, N, P absorption and yield of cotton after hail disaster. Cultivation can promote the growth of hay-bearing cotton axillary buds, especially on the topdressing N, P fertilizer, it helps to promote the accumulation and absorption of N, P in plants and promote the early budding, early flowering and boll number increase of hail. N fertilizer application alone N, P mixed effect, N or N, P mixed application of not cultivating less than N fertilizer cultivating large-yielding effect. Therefore, after the hail of cotton should promptly cultivate the soil on the basis of N, P fertilizer as soon as possible in order to increase production and reduce losses