玉米肥料运筹动态知识模型研究

为给玉米田知识模型间施肥提供决策工具,试图建立一种系统化和广适性的玉米肥料运筹动态。该模型通过分析和提炼玉米肥料管理方面的最新研究资料,在综合考虑气候条件、土壤理化性质、品种特性等影响因子基础上,根据养分平衡原理,以产量为目标,结合土壤养分供给量和玉米养分需求量,建立了玉米肥料运筹动态知识模型。模型可用于精确定量不同环境和不同产量目标下的氮磷钾施用量、有机氮无机氮施用比例及不同生育时期的氮肥追施量等。利用不同生态点、不同品种、不同土壤肥力等数据对模型进行了验证,结果表明,该模型具有较好的决策性和适用性。

A dynamic knowledge model for fertilization management in maize

This study was designed to develop a systematic and universal knowledge model for decision-making on fertilization of maize.After careful analysis and examination of the latest research on fertilization management of maize,a dynamic knowledge model was created for decision-making on total rate of Nitrogen,Phosphorus,Potassium and the ratio of organ nitrogen to mineral nitrogen and nitrogen distributions among main growth stages of maize under different environments and yield targets by following the principle of nutrient balance and integrating soil real-time nutrient supply and maize nutrient requirements.Meanwhile,the environment factors,soil physical and chemical characters and variety traits were considered.Case study data on the model collected from different eco-sites,yield targets,varieties traits and soil characters indicated that the model had a desirable performance in decision-making and applicability.