In order to clarify the effects of chelate tetrasodium glutamate diacetate (GLDA) on the remediation of cadmium (Cd) contaminated farmland by Pennisetum purpureum Schum, GLDA was applied in different methods within 60 days: total application doses of 585, 1 170, and 2 340 kg•hm-2 were equally divided into 1-4 applications, respectively, and the time intervals of 2-4 applications were 30, 20, and 15 days, respectively. The biomass, Cd content, and amount of Cd extracted from aboveground parts of Pennisetum purpureum Schum, in addition to the pH...