棉花生育期中要求细致管理,有的社队常因作务粗放而致棉花产量低而不稳。我县环城公社四工三队,于去年学习化学整枝的新技术,结合早施肥、早灌水、早摘心等其它管理措施,对一百零一亩棉田全部采用超低量、超高浓度、高位快速冷喷矮壮素的方法,获得可喜成果。百亩棉田平均亩产皮棉一百一十六斤二两,其中四十亩丰产田亩产皮棉一百五十斤。他们采用化学整枝的方法和经验是: 一、主攻早发为化学整枝打好基础。播前整平土地,施足底肥,灌好安根水。谷雨后播 Cotton development period requires careful management, and some communes and brigades often lead to low and unstable cotton production. In the last year, we learned about the new technology of chemical pruning combined with other management measures such as early fertilization, early irrigation and early plucking of the heart, and used 100% of the cotton fields in ultra-low-volume and ultra- High fast cold spray PCC method, get gratifying results. The average yield per mu of cotton fields is 116 kilograms of lint, of which about 40 acres of high-yielding fields yield 150 pounds of lint. Their methods and experience of using chemical pruning are: First, the main attack early lay the foundation for chemical pruning. Flatten the land before sowing, Shi enough base fertilizer, filling a root water. Valley rain broadcast