陇东黄土高原旱地农田水分盈亏与开发对策  

Water profit and deficit of rainfed farmland in east Gansu Province

作　　者：段金省[1] 

机构地区：[1]中国气象局兰州干旱气象研究所甘肃省干旱气候变化与减灾重点实验室

出　　处：《干旱地区农业研究》2007年第3期77-81,共5页Agricultural Research in the Arid Areas

基　　金：科技部社会公益项目(2004DIB5J192)

摘　　要：农田水分平衡计算结果表明:陇东黄土高原的旱地农作物生长发育及产量形成与作物生长期间的农田水分盈亏关系密切。不同年景、不同作物和不同气候条件下,相关性水平有所不同,喜水作物玉米、高粱相关效果最明显,而耐旱作物冬小麦、马铃薯略差,其它作物居中;不同作物在不同的发育期,受水分影响的程度不同,同时也受其它因子的干扰和影响。结合本区的经济发展状况和物价水平提出了相应的旱地农业开发对策。Soil water balance of farmland in east tJansu was calculated were closely related with soil water profit, but the relation degrees between crops were varied with climate change from year to year, the degree of crop＇ needed mor water, such as maize and soghum, was higher than that needed less water, such as winter wheat and potato. The water affecting degree also varies with crop growth stages, meanwhile disturbed by other affecting factors.

关 键 词：旱地作物 农田水分盈亏 开发对策 

分 类 号：S152.7[农业科学—土壤学]