移栽玉米的氮素诊断及追肥推荐研究  

Study on the Nitrogen Diagnosis of Transplanting Maize Recommenation of Nitrogen Fertilizer as Top Dressing

作　　者：肖焱波[1] 段宗颜 张福锁[2] 苏凡 金航 陈新平[2] 雷宝坤 

机构地区：[1]云南农科院土肥所,昆明650205 [2]中国农业大学植物营养系,北京100094

出　　处：《土壤肥料》2001年第6期16-20,共5页Soils and Fertilizers

基　　金：云南省省院省校合作专项资助

摘　　要：本文通过对不同施氮量与移栽玉米产量的两种模型比较 ,得出线性加平台能较好的模拟产量与施氮量的关系 ,由此得到了最佳施氮量和最佳产量 ,同时确定了玉米植株硝酸盐 ,土壤0～ 30 cm硝酸盐的推荐施氮临界值指标。By comparing two models simulated relation between nitrogen fertilizer rate and corn yield under transplanted pattern, the results show that the linear plus plateau model can simulate the relation well. The optimal nitrogen fertilizer rate for transplanted corn and the optimal corn yield then can be obtained from the model. Thereafter, the critical values of corn leaf nitrate concentration and nitrate concentration in 0~30cm-soil layer are determined for nitrogen fertilizer dressing.

关 键 词：移栽玉米 施肥模型 氮素诊断 产量 施氮量 追肥 

分 类 号：S513.01[农业科学—作物学]