摘要
1992～ 1996年利用盆栽试验研究了碳酸盐黑钙土种植玉米施用锌、磷、有机肥对玉米生育及产量的影响。结果表明 :在严重缺磷的碳酸盐黑钙土上 ,单独施锌无效 ,锌磷配施玉米苗期生物学产量增产明显 ,磷与锌呈正交互作用 ;施磷和有机肥时 ,玉米苗期锌含量下降到 19.4～ 2 3.3mg/kg,磷 /锌比值大于 140 ,玉米易出现白苗症 ;施入土壤的锌第 1年固定率最高可达 65%～ 88% ,第 2年达 85%～ 95% ,第 3年达 88.5%～92 .4 % ;
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.
出处
《贵州农业科学》
CAS
2001年第3期14-18,共5页
Guizhou Agricultural Sciences
关键词
锌磷
有机肥
固定率
利用率
玉米
肥效
生育
产量
maize
zinc
phosphate
organic matter fertilizer
utilized ratio
fixed ratio
