CAJ | 학술논문

以华北平原为研究区域，根据第二次全国土壤普查资料，应用地理信息系统的方法 (ARC/INFO)，得出了以72个典型土壤剖面为代表的华北平原土壤类型分布的概化图。在区域农田土壤水、氮素行为的模拟计算的基础上，以水、氮补充量为决策变量，以作物产量、1 m土体氮素淋洗量、水分利用效率和氮素利用效率为目标，建立多目标混合最优化模型，采用线性加选择法优选水氮处理。通过模型计算，获得了研究区域内六类主要质地、不同降雨年型、冬小麦-夏玉米轮作条件的较优水氮处理。
이화북평원위연구구역，근거제이차전국토양보사자료，응용지리신식계통적방법 (ARC/INFO)，득출료이72개전형토양부면위대표적화북평원토양류형분포적개화도。재구역농전토양수、담소행위적모의계산적기출상，이수、담보충량위결책변량，이작물산량、1 m토체담소림세량、수분이용효솔화담소이용효솔위목표，건립다목표혼합최우화모형，채용선성가선택법우선수담처리。통과모형계산，획득료연구구역내륙류주요질지、불동강우년형、동소맥-하옥미륜작조건적교우수담처리。
The North China Plain was selected as the research region of this paper. Based on data of the Second National General Soil Survey, a simplified distribution map of soil types in the North China Plain was obtained with geographic information system (GIS) method (ARC/INFO). There were 72 soil types with the representative profiles. A multiple goal hybrid programming model was also established in this paper, based on the simulation of regional soil water and nitrogen behaviors under agricultural field. Its programming variables were irrigation and nitrogen application. The programming goals were grain yields, nitrogen leaching at 1 meter depth, water use efficiency (WUE) and nitrogen use efficiency (NUE). A linear weight coefficient selection method was employed to resolve the programming model. Suitable quantities of water and nitrogen of winter wheat-summer maize rotation system were determined for 6 soils with different texture in different hydrologic year types.