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作 者 ：张浩1;3;陈仕江2;王正银1;李会合1;苏胜齐1

期 刊 ：植物营养与肥料学报 2004年 10卷 6期 页码：588-593

关键词：黄连；缓释复合肥；养分释放；生物效应；

Keywords:compound slow release fertilizer, Chinese goldthread, nutrient release, biological effect,

摘 要 ：采用连续恒温培养和大田试验研究了4种缓释复合肥在种植黄连的土壤(森林黄棕壤)中的养分释放特性及其对黄连产量和药用品质的效应。结果表明,20℃恒温模拟条件下缓释复合肥氮、磷、钾养分缓释性能较佳,3种养分释放的动力学过程可用Elovich方程S_t=a+blnt、双常数方程lnS_t=a+blnt和抛物线扩散方程S_t=a+bt^0.5表征,各方程参数b值均可用于描述缓释复合肥氮、磷、钾养分释放速率。在田间试验中4种缓释复合肥极显著提高3～5年生黄连产量,大幅度提高黄连小檗碱和生物碱产量,并以SRF₃、SRF₂和SRF₁3种缓释复合肥的效应大。

Abstract:Continuous constant temperature incubations and field experiments were adopted to study the nutrient release characteristics of four compound slow release fertilizers and the effect on yield and medical qualities of rhizome of Chinese goldthread. The results indicated that the nitrogen, phosphorus and potassium had good slow release capability of four compound slow release fertilizers incubated under the simulation conditions(20℃). The dynamical processes of nutrient release were described correctly by Elovich equation (S_t=a+blnt), double constant equation (lnS_t=a+blnt) and parabola diffuse equation(S_t=a+bt^0.5) and nutrient release rate could be described by parameter b of all equations. Rhizome yields and berberine and alkaloid contents of Chinese goldthread were increased significantly used four compound slow release fertilizers, and the maximum biological response of rhizome of Chinese goldthread, which growing third to fifth years, were SRF₂, SRF₁　and SRF₃, respectively.

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