基于WebGIS的设施土壤养分管理系统设计和实现

Design and development of soil nutrition management system for protected culture of vegetables based on WebGIS

针对目前设施栽培蔬菜土肥管理多沿用大田管理方式造成设施内土壤理化性状和营养平衡遭到破坏、蔬菜产量品质下降、设施土壤可持续性利用困难的现状,设计开发了设施蔬菜土壤养分管理决策系统,采用Java Applet模式构建了基于WebGIS的设施土壤养分管理子系统;根据设施环境条件和蔬菜需肥规律,建立设施蔬菜施肥模型和设施土壤施肥决策子系统;根据蔬菜营养障碍的症状表现,采用基于案例的推理机制,建立设施蔬菜营养诊断专家系统,并实现了子系统的集成。系统主要帮助蔬菜种植基地、种植场和种植户实现设施土壤养分有效管理并提供蔬菜营养诊断和测土配方施肥决策。本文对系统结构和功能作了详细介绍。

This paper details a soil nutrition management and decision-making system for protected culture of vegetables. This system is designed in order to solve the problems existing in protected vegetable cultivation such as the decline of vegetable yield and quality, deterioration of soil environment, and unbalance of soil nutrition caused by improper fertilization. It includes four subsystems, i. e., a soil nutrition management subsystem by using Java Applet model and WebGIS technology, a fertilization recommendation subsystem based on a vegetable fertilizing model, a vegetable nutrition diagnosis expert system by CBR （Case-Based Reasoning） and a soil fertilizing technology query subsystem. The system can help vegetable producers to effectively manage soil nutrition and provide soil nutrition diagnosis and recommended rates of fertilizer application so as to increase the producers＇income and realize the sustainable utilization of protected culture soil.