Abstract:

Effects of water-keeping from super absorbent polymer PAM in hilly red soil upland were studied under the condition of dry autumn in order to provide a theoretical basis for high-yield and good-quality of waxy corn. The research took ‘Huyunuo 3’ fresh-eating waxy corn as experimental material with seed dressing, furrowing and holing to study the effects of super absorbent polymer PAM different application amount and methods on the growth. The results indicated that, the soil moisture content in 0-40 cm heightened with the super absorbent polymer PAM increasing in soil layer. Among 5 treatments, the treatment of 60 kg/hm2 super absorbent polymer PAM furrowing application had the best water-retaining and yield-increasing effects; 30 kg/hm2 PAM under different conditions of application, the effects of holing treatment were better than that of furrowing treatment, but the difference was not significant. On the whole, the PAM application could enhance corn fresh corncob yield and aboveground biomass through increasing the moisture content of soil, and improving the yield components of corn.