河北省黑龙港地区生态特点鲜明,降水不足,客水有限,地下水位深,土壤盐碱,肥力不足,限制了棉花增产;其有利条件是光照充足,热量丰富。在长期的生产实践中,摸索出了亩产皮棉75公斤的增产技术。一、产量构成根据1985～1987年三年系统资料,亩产皮棉75公斤左右的田块,平均亩施底肥2.34 Heilongjiang Province, Hebei Province, a distinctive ecological characteristics, lack of precipitation, passenger water is limited, groundwater level is deep, soil salinity, lack of fertility, limiting the cotton yield; its favorable conditions are adequate light, rich in calories. In the long-term production practice, to explore a yield of 75 kg per mu lint yield. I. Production Composition According to the three-year system data from 1985 to 1987, a total area of ​​about 75 kg of lint per mu was produced, with an average of 2.34 mu