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中国农学通报

中国农学通报 ›› 2011, Vol. 27 ›› Issue (7): 193-197.

所属专题： 园艺

• 农学 农业基础科学 • 上一篇    下一篇

氮磷钾施用水平与莴苣产量关系的拟合分析

飞兴文   

  • 收稿日期:2010-07-30 修回日期:2010-08-25 出版日期:2011-04-05 发布日期:2011-04-05

The Relationship Between Combined Application Levels of Nitrogen, Phosphorus, Potassium fertilizer and Yield Prediction of Lettuce ( Lettuce sativa L.) by Using Simulation Analysis

  • Received:2010-07-30 Revised:2010-08-25 Online:2011-04-05 Published:2011-04-05

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摘要：

摘要：本研究采用“3414” 试验设计方案，研究了13种（不含空白）不同氮、磷、钾搭配施肥方案下，各处理组合莴苣植株对氮、磷、钾的吸收量，获得莴苣每形成1000 Kg生物产量，需从土壤吸收N 1.21-2.26 Kg，平均 1.88Kg；P2O5 0.57-0.81Kg，平均0.64Kg；K2O 2.97-5.09Kg，平均 3.92Kg，氮、磷、钾的吸收比例为3：1：6；采用拟合法分析了单纯施用一种营养、两种营养元素配合下，施肥与产量的关系，提出了莴苣“控氮磷增钾” 的施肥原则。从提高肥料利用率，减少肥料流失的角度对于减轻农业面源污染具有非常重要的意义。

关键词: AHP法, AHP法, 灰色关联法, 地方品种, 综合评价, 辣椒

Abstract:

Abstract： Thirteen treatments (check not contained ) with different combined application levels of Nitrogen, Phosphorus, Potassium fertilizer were conducted for testing the absorptive effects of Lettuce ( Lettuce sativa L.) by the“3414”designment. The results showed that the plant needs to assimilate pure Nitrogen（N）1.21～2.26 Kg (average 1.88 Kg ), Phosphorus (P2O5 ) 0.57～0.81 Kg (avr. 0.64Kg), Potassium ( K2O )2.97～5.09Kg （avr. 3.92 Kg ）from soil to produce 1000 Kg biomass yield, and the application ratio of Nitrogen, Phosphorus, and Potassium fertilizer was 3:1:6. The relationship between fertilizer application and yield prediction was analyzed in the application with a sole nutritional fertilizer or two nutritional fertilizers. With the result, we referred to this principle: “controlling N and P, increasing K” in lettuce field production. It was of great importance to decrease agricultural pollution in the point to use fertilizer optimally and reduce its loss.