黄土高原农业水资源有效管理技术研究  

Research on rational management technique of agriculture water resources for the loess plateau

作　　者：尚虎君[1] 

机构地区：[1]西北农林科技大学农业水土工程研究所,陕西杨凌712100

出　　处：《西北水资源与水工程》2002年第4期32-37,共6页Northwest Water Resources & Water Engineering

摘　　要：通过对黄土高原农业水资源状况及干旱发生规律的分析 ,认为黄土高原主要作物生长需水关键期恰好处于土壤水分的低值槽期 ,降水的高峰值又和土壤水分蒸发期同步 ,加之土壤水分变化幅度较大 ,贮水效率低 ,表现出土壤水分稳定性亏缺的常住性。黄土高原农田水分供需状况因作物种类和地区分布不同而异。通过大量的调查 。Through analysis of agriculture water resources and regularity of aridity on the loess Plateau, the authors thinks: the key period of water requirement of the main crops is just the period of lower soil moisture; the peak period of rainfall synchronize with evaporvation; the soil evaporation changes greatly; the soil efficiency is lower in storing water; deficiency of soil moisture is frequent; and the water requirement is different for different crop and different region. By a great deal of investigation this paper gives the strategy of efficient utilization of water resources in the region.

关 键 词：黄土高原 农业 水资源 干旱规律 

分 类 号：F323.213[经济管理—产业经济] TV2[水利工程]