寒地高肥条件下玉米氮磷钾积累规律研究  

Study on N,P,K Accumulation of Maize Under High-fertility Level in Cold Region

作　　者：李明[1] 裴占江[1] 张明[1] 于琳[1] 

机构地区：[1]东北农业大学农学院,哈尔滨150030

出　　处：《玉米科学》2010年第1期121-125,共5页Journal of Maize Sciences

基　　金：黑龙江省科技攻关项目(GB01B304-02)

摘　　要：对高肥条件下6个玉米品种地上部氮磷钾含量变化的研究发现,随着玉米的生育进程,氮和钾含量总的趋势是逐渐降低,而磷含量围绕一个值上下波动,单株氮磷钾的积累均可以用逻辑斯蒂方程来描述。氮和钾的积累速率呈单峰曲线,由于最大值出现较早,表明钾素积累快于氮素(抽雄前),而磷素的积累速率明显低于前两者(吐丝后),而且品种间存在差异,部分呈单峰曲线,部分近似线性,表明后期积累持续增加。Six maize varieties of four kinds of types were planted under high-fertility level in 2002 to investigate N,P,K accumulation of maize(above-ground parts) in cold region of China.The results indicated that with the growth process of maize,nitrogen and potassium content of the general trend was gradually reduced,while the phosphorus content fluctuated around a value,accumulation of nitrogen,phosphorus and potassium in plant couble be described by the Logistic equation,nitrogen and potassium accumulation rate ...

关 键 词：玉米 氮磷钾积累 寒地 

分 类 号：S51[农业科学—作物学]