摘要
通过温室栽培试验,研究了施肥灌溉时施氮次数及施氮量对青椒养分(N,P,K)吸收行为的影响。综合分析了作物体的总吸氮量,不同部位(叶、茎、果实)的吸氮量,施氮次数及施氮量对 P和 K 总吸收量的影响以及不同处理下的氮肥利用率。结果表明,在施肥灌溉条件下多次、少量施氮对青椒养分吸收最为有利。
A pot experiment has been conducted in the greenhouse on sandy clay loam soil to study the effects of N application rate and frequency under fertigation on N,P,K uptake,N distribution in different parts of plant and N use efficiency for pepper.The data indicates that fertigation with small N rate and many time appli- cations can lead to optimum nutrient uptake.
关键词
施肥
施氮次数
施氮量
氮肥
辣椒
fertilizing
fertigation
N application frequency
N rate
N use efficiency
