Abstract:To determine the ways of cotton‘s compensation at the level oi reproductive organs for the simulated damage to the eaily squares, 11 on the site experiments were conducted on 4 varieties of upland cotton, Gossypium hirsutum L. at 3 levels of soil fertility in Raoyang county, Hebei Province during 4 growing seasons (1981-1984). The developmental states were recorded once every two days.The data collected show that the removal of atout 8 early squares per plant produced several impacts: 1) The date of flower ...