试论华北半湿润半干旱地区降水资源的农业气候评价——以海河平原为例

A COMMENT ON THE PRECIPITATION RESOURCES IN THE SEMI-WET AND SEMI-ARID REGIONS IN NORTH CHINA——TAKE THE HAI RIVER PLAIN FOR AN EXAMPLE

摘要: 本文从农田水分平衡观点出发,用农业气候-水文-水文地质方法计算了有效降水量,并且分析了它的时问分布结构。在此基础上,我们进行了农作物需水盈亏分析,并指出:在海河平原地区,冬小麦(400斤/亩)亏水290毫米左右,夏玉米(500斤/亩)亏水100毫米左右。

Abstract: Tn this paper, from the view point of water balance, we calculated the effective precipitation and analyzed its time distribution. Based on that, we analyzed the profits or losses for the water need of the plants. It is found that in the Hai River plain, the winter wheat (in the case of 400 Jin/Mu) and the summer corn (in the case of 500 Jin/Mu) are short of water for 290 mm and 100 mm respectively.