抗虫棉作为一种新型的棉花品种类型 ,只有采取相应的配套栽培技术 ,其内在的优良特征特性才能充分表达。抗虫棉前期生长发育缓慢 ,开花后生长发育较快 ,至开花结铃期个体生长发育和棉田长势都达到或超过常规棉。特别是单株结铃数量多 ,脱落少 ,生殖生长旺盛 ,结铃后期易发生早 Bt cotton as a new type of cotton varieties, only to take the appropriate supporting cultivation techniques, its inherent characteristics of the excellent features can be fully expressed. Bt cotton growth and development is slow, fast growth after flowering, to flowering and boll growth and development of individual cotton fields have reached or exceeded conventional cotton growth. In particular, the number of bolls per plant, less shedding, strong reproductive growth, early post-bell cycle prone to early