基于产量反应和农学效率的玉米高效施肥方法研究

Research on high efficienct fertilization method based on yield response and agronomic efficiency is to carry out under current low nutrient use efficiency caused by over and imbalanced fertilization.In this study, we are to use QUEFTS model analyzing multiple-year-site data to declare the relationship between grain yield and nutrient uptake to obtain the optimal nutrient uptake parameters; field experiment and validation were conducted to declare the crop based soil indigenous nutrient supplies, yield responses to fertilizer applied, and agronomic efficiency parameters; With integration to computer softwares, nutrient decision support tool based on yield response and agronomic efficiency for nutrient management and high efficient fertilization would be developed. The fruits from this study would provide scientific basis for high efficient fertilization for maize.

针对当前农业生产中因肥料过量和不合理施用带来的肥料利用低的问题，开展基于产量反应和农学效率的玉米高效施肥方法研究。本项目以多年多点试验数据为基础，采用田间小区试验和QUEFTS模型分析相结合方法，研究我国玉米种植区玉米养分吸收特征参数，包括土壤基础养分供应、产量反应和农学效率特征，研究建立基于产量反应和农学效率的玉米养分管理和高效施肥方法。研究成果对于指导农田和区域尺度玉米养分管理和高效施肥具有重要科学价值和应用前景。

针对当前农业生产中因过量施肥带来的肥料利用率低的问题，本项目开展了基于产量反应和农学效率的玉米高效施肥方法。本项目以多年多点试验数据为基础，采用田间小区试验和QUEFTS模型相结合方法，研究我国玉米主产区养分吸收特征参数，包括土壤基础养分供应、产量反应和农学效率特征，研究建立了基于产量反应和农学效率的推荐施肥方法。研究成果对于指导我国玉米养分管理和高效施肥具有重要科学价值和应用前景。