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棉花生产上运用“趸棉”(即方块育苗)移栽是棉花栽培技术上的一项改革。近年来我省主要棉区如天门、沔阳等县广泛采用。实践证明,趸棉移栽是以提早并延长棉花生育期为主的增产措施,一般比直播棉早熟15天,增产10%以上。现将我们的调查和1977年的试验结果,初步整理,供参考。一、躉棉移栽的作用1、育早苗,争早发,延长有效开花结铃期。棉花现蕾要求气温20℃,开花结铃适宜的温度在25℃左右。我省棉区5月15日气温可达20℃左右,6月20日可达26℃以上。8月15日前现的蕾,9月8日前的花均可发
Cotton production using “single cotton” (that is, box nursery) Transplanting is a cotton cultivation technology reform. In recent years, major cotton areas in our province such as Tianmen, Shenyang and other counties widely used. Practice has proved that the cotton transplanting is to early and extend the growth period of cotton-based measures to increase production, generally 15 days earlier than direct seeding cotton, an increase of 10%. Now our survey and the results of the 1977 trial, for the initial preparation for reference. First, the role of cotton transplanting 1, nurturing early seedling, strive for early onset, to extend the effective flowering period. Cotton bud requires temperature 20 ℃, flowering bell appropriate temperature at about 25 ℃. Cotton province on May 15 temperatures up to about 20 ℃, June 20 up to 26 ℃ or more. August 15 is the bud, before September 8 flowers can be made