摘要
不同用量的尿素磷石膏肥料可比等氮量尿素处理的稻麦显著增产,并相当于提高一个等级尿素用量处理的产量,这种现象称之为尿素磷石膏肥料增量效应。不同土壤肥力和肥料的施用时间对于水稻利用肥料中氮素有很大影响。
The pot experiment of different N rate of U-G fertilizer demonstrated that: the yield of U-G was raised higher significantly than urea on the same rate treatment, and may equal to the yield of urea on the upper one rate treatment. We called this phenomenon 'increment effect' of U-G fertilizer. Different soil fertility and application time of fertilizer may cause important influence to the N utilization of fertilizer by rice plant. When we compare the treatment between U-G controlled release fertilizer and urea alone, the two parameter (Ndff％ and N fertilizer efficiency of rice plant) of the U-G treatment were all higher over the urea treatment.
出处
《上海交通大学学报（农业科学版）》
1991年第3期207-212,共6页
Journal of Shanghai Jiaotong University(Agricultural Science)
