北乡棉区办棉农人均占有耕地多，单位面积棉田需种量大等条件所限，使杂优利用难度较内地兄弟省区要大得多。因此，在杂交棉的推广应用上不能照搬用中棉所及黄河、长江流域棉区的成功经验。只能够在学习、吸取他们经验的基础上，依据我区的自然生态及耕作栽培条件研究出相应的 Beixiang cotton area cotton farmers per capita possession of arable land per unit area of ​​cotton fields and other conditions required to be limited, so that heterogeneous utilization more difficult than the mainland provinces and provinces to be much larger. Therefore, the popularization and application of hybrid cotton can not be copied with the cotton and the Yellow River, the Yangtze River Delta cotton area’s successful experience. Only in learning, drawing on their experience, based on the natural ecology of our region and cultivation and cultivation conditions to study the corresponding