肥效评价的生态平衡施肥指标体系的应用

Application of Index System of Ecological Balanced Fertilization for Fertilizer Efficiency Evaluation

本文以肥效评价的生态平衡施肥理论体系为基础,对生态平衡施肥指标体系进行了研究。(1)以肥料转化率为基础建立了全量养分通用施肥模型和参数体系:在Wj=Wi状态下,模型为Win=Wyield/Kyield,参数为产量和肥料转化率;在Wj>Wi状态下,模型为Win=Wyield/Kyield,参数为产量和肥料转化率;在Wj<Wi状态下,模型为Win=Wyield/Ks-yield+(Wj-W)i,参数为产量、肥料转化率和(Wj-W)i。(2)以肥料离土率为基础建立了肥料离土估算模型和参数体系:在Wj=Wi状态下,全量养分通用离土模型为Wleave=Win×Kleave或Kleave=1-Kyield,参数为产量和肥料转化率;在Wj>Wi状态下,模型为Wleave=Kleave×Win或Kleave=1-Kyield-Kfertilization,参数为产量、肥料转化率和(Wj-W)i或Kfertilization。(3)以肥料培肥率为基础建立了土壤培肥模型和参数体系:在Wj>Wi时,肥料培肥率模型为Kfertilization=(Wj-W)i/Win,参数为产量和肥料培肥率。(4)以中长期定位试验为例说明了以上模型的应用方法和过程。

This paper was based on the theory system of Ecological Balanced Fertilization for fertilizer efficiency evaluation and investigate the index system of Ecological Balanced Fertilization：（1）universal fertilization model and parameter system of total nutrient were established based on Fertilizer Yield：model was Win=Wyield/Kyield when Wj=Wi,parameters were yield and fertilizer yield;model was Win=Wyield/Kyield when WjWi,parameters were yield and fertilizer yield;model wasWin=Wyield/Ks-yield＋（Wj-Wi） when WjWi,parameters were yield,fertilizer yield and（Wj-Wi）;（2）estimation model and parameter system of fertilizer leave were established based on Fertilizer Leave Rate：universal fertilization leave model of total nutrient was Wleave=Win×Kleave or Kleave=1-Kyield when Wj=Wi,parameters were yield and fertilizer yield;model was Wleave= Kleave×Win or Kleave=1-Kyield-Kfertilization when WjWi,parameters were yield,fertilizer yield and（Wj-Wi） or Kfertilization;（3）soil fertilization model and parameter system were established based on Fertilization Rate：soil fertilization rate model was Kfertilization=（Wj-Wi）/Win when WjWi,parameters were yield and fertilization rate;（4）application method and process were illustrated by mid-long term experiments.