京津地区近50年来水稻播种面积变化及其对降水变化的响应研究
苏桂武, 方修琦
Changes of the Rice-Seeded Area in Beijing and Tianjin Region during the Past 50 Years and Its Responses to the Changes of Precipitation
SU Gui-wu, FANG Xiu-qi
地理科学 . 2000, (3): 212 -217 .  DOI: 10.13249/j.cnki.sgs.2000.03.212