施用腐殖酸对提高玉米氮肥利用率的研究  

Studies on increasing N utilizing efficiency in maize by applying humic acid

作　　者：陈振德[1] 何金明[1] 李祥云[1] 陈建美[1] 

机构地区：[1]青岛市农业科学研究院,青岛266100

出　　处：《中国生态农业学报》2007年第1期52-54,共3页Chinese Journal of Eco-Agriculture

基　　金：青岛市科技攻关项目(9895G0207)资助

摘　　要：试验研究腐殖酸与尿素配合施用对玉米养分吸收、产量与N肥利用率的影响结果表明,腐殖酸能明显促进玉米植株对N、P、K养分的吸收,滞留在茎叶的N和K2O明显增加。在尿素中添加腐殖酸能明显提高玉米产量和N肥利用率。在尿素中添加10%的腐殖酸玉米产量和N肥利用率综合效果较好。Effects of applying urea mixed with humic acid on nutrient absorption, yield and N utilizing rate in maize were studied. The results indicate that the humic acid can obviously promote the absorption of nitrogen, phosphorus and potassium by maize plants with an obvious increase of the contents of nitrogen and potassium oxide in the stem and leaves of maize plants. Humic acid added in urea can evidently increase grain yield and N utilizing rate of maize. According to the yield and N utilizing rate of maize, 10% humic acid added in urea is better than other treatments in comprehensive effects.

关 键 词：腐殖酸 玉米 N肥利用率 养分吸收 产量 

分 类 号：S143.1[农业科学—肥料学]