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56kg·hm-2、78 kg·hm-2和270
The experiment was conducted in Zhengning County ,Gansu Province to study the effects of“3414”fer-tilization 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 .
出处
《干旱地区农业研究》
CSCD
北大核心
2013年第5期191-195,共5页
Agricultural Research in the Arid Areas
基金
农业部公益性行业(农业)科技专项(200803031)
庆阳市科技局科技专项(GK071-1)
关键词
烤烟
“3414”肥料试验
肥料效应函数
施肥参数
flue-cured tobacco
＂3414＂ fertilization program
fertilizer effect function
fertilization parameter
