摘要:为了探讨“3414”方案在烤烟施肥中的应用和正宁县烤烟的合理施肥量，通过田间试验研究了正宁县烤烟“3414”方案的施肥效果和推荐用量。结果表明，当三元二次肥效模型不能对“3414”试验结果进行拟合时，采用一元二次肥效模型拟合，可以较好地反映产量与施肥量之间的关系；氮、磷肥效应函数属典型模型，钾肥效应函数属非典型模型；结合经济效益分析，可以看出本试验条件下当地烤烟种植的经济最佳氮、磷和钾施用量分别为56 kg·hm^-2、78 kg·hm^-2和270 kg·hm^-2。

关键词:烤烟  “3414”肥料试验  肥料效应函数  施肥参数

AbstractThe experiment was conducted in Zhengning County, Gansu Province to study the effects of “3414” fertilization program and fertilizer recommendation for fluecured tobacco. The results showed that the onefactor quadratic models could reflect well the relationship between yield and fertilization rate. The effect functions of N and P were typical models, while the effect function of K was a typical model. According to the economic analysis, the optimal application rate of N, P and K for fluecured tobacco was 56 kg·hm^-2, 78 kg·hm^-2 and 270 kg·hm^-2, respectively.

Key wordsflue cured tobacco  “3414” fertilization program  fertilizer effect function  fertilization parameter

文章编号： 0258_7106 (2016) 01_0018_15 中图分类号： P618.41 文献标志码：A

改回日期：2015_07_11

基金项目

**通讯作者耿新霞， 女， 1979年生， 助理研究员， 成矿规律研究方向。 Email： gen gxinxia@cags.ac.cn