河南省冬小麦种植频率时空变化及影响因素分析
李方杰,任建强(),吴尚蓉,陈仲新,张宁丹
Spatio-Temporal Variations of Winter Wheat Planting Frequency and Their Analysis of Influencing Factors in Henan Province
FangJie LI,JianQiang REN(),ShangRong WU,ZhongXin CHEN,NingDan ZHANG

图11. 河南省不同时期各县冬小麦种植频率与有效灌溉面积比例空间分布2.3.2 冬小麦种植频率与土壤质量间关系分析

Fig. 11. Spatial distribution of WWPF and ratio of effective irrigation area in different periods of Henan province