Effect of Zinc, Phosphate and Organic Fertilizer on Growth and Yield of Maize

Effect Zn、P and organic fertilizer application on the maize in carboante Chernozem was studied by means of pot culture experiment from 1992 to 1996. The results showed that it was invalid to apply Zn fertilizer alone, but biomass production obviously increased while Zn and P fertilizer applying together during maize seedling stage, P and Zn showed positive interaction effects in carbonate Chernozem of seriously lack of P. While applying P and organic fertilizer, the contents of Zn were 19.4～23.3 mg/kg, P/Zn 140 in the maize seedling stage, the maize showed albino plant. The fixed ratio of Zn applied into soil was 65%～88% in the first year, 85%～92.45% in the second year, 88.5%～92.45% in the third year; it suggests that the P and Zn fertilizer application together can not only enhance the utilized ratio of Zn but also the utilized ratio of P.