[关键词]
[摘要]
目的:研究菘蓝的氮、磷、钾需求规律和合理配比。方法采用“3414”二次回归最优设计,以氮、磷、钾为供试因子,菘蓝产量为目标函数,对菘蓝施肥数学模型进行了研究。结果:根据建立的数学模型获得了优化施肥技术方案:即尿素260kg／hm2,过磷酸钙1287．36kg／hm2硫酸钾489．89kg／hm2,应用此配方产量可达7387．45kg／hm2。结论:可以为菘蓝的规范化栽培（GAP）提供科学的理论指导。
[Key word]
[Abstract]
Objective:The article studied the formula fertilizing of Lsatis indigotica Fort. The fertilizer effect was also investigated. Method: By using the "3414" balance application design, we built the mathematical model of the relationship between its yield and application scheme. Result: From the model, we got optimization fertilizing sheme, which is, 260kg/hm2 nitrogen; 1287.36kg/hm2 superphosphate; 489.89kg/hm2 kalium sulfate, and the yield reached 7387.45kg/hm2. Conclusion: The result will provide scientific guidance for good agriculture practice （GAP） of Lsatis indigotica Fort.
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[基金项目]
河北省科技厅创新药物与中药现代化重大专项(03276408D-1):祁沙参等规范化种植技术研究及GAP基地建设
