小麦栽培氮肥运筹的动态知识模型

 通过分析和提炼小麦氮肥管理方面的最新研究资料 ,以小麦产量和品质为目标 ,根据土壤理化特性、品种遗传特征和水分管理水平等 ,利用养分平衡原理 ,建立了系统化和广适性的小麦栽培氮肥运筹的动态知识模型。该模型可用于精确定量不同环境条件及不同小麦品种生产过程中的总施氮量、有机氮与无机氮的比例以及氮基肥与氮追肥的比例等。利用南京和徐州 2个不同生态点的不同土壤和品种资料、不同产量和品质目标 ,以及不同水分管理水平等对所建氮肥运筹知识模型进行了实例分析 ,表明所建知识模型具有较好的决策性和适用性。

A Dynamic Knowledge Model for Nitrogen Application in Wheat Cultivation

By analyzing and extracting the latest researches on nitrogen application in wheat, a knowledge model for wheat management decision-making on total nitrogen rate, ratios of organic to inorganic and basd to dressing nitrogen under different environments and varieties was developed with principle of nutrient balance and by integrating the facts of grain yield and quality targets, soil characters, variety traits and water management levels. Case studies on the nitrogen application model with the data sets of different eco-sites, varieties, soil fertilities, grain yield and quality targets and water management levels indicate a good performance of the model system in decision-making and wide applicability.