摘要
以辽西半干旱区2004～2008年的玉米生长参数及农业气象资料为依据,应用CROPWAT模型模拟分析了该区玉米的需水及灌水量.结果表明,玉米生育期需水趋势总体为正态分布,年需水量在572～645mm之间,苗期、拔节期、抽雄期、灌浆期需水量分别占总需水量的11.1%、30.2%、19.8%和38.9%;玉米灌溉需水量曲线因降雨差异在不同的年份呈现不同的变化型,基本分为抛物线型、中期平台型和双峰型3种;玉米的补充灌溉主要集中于7、8、9这3个月.
The corn water requirement and irrigation forecast in semi-arid area in western Liaoning were studied by using CROPWAT model,based on corn growth parameters and agro-meteorological data from 2004 to 2008.The results indicate that the trend of corn water requirement was in a normal distribution in the growth period and the annual water demand was between 572 and 645mm.The water requirements in the seedling,jointing,tasselling,and filling stages were 11.1%,30.2%,19.8% and 38.9% of the total water requirement,...
出处
《中国科学院研究生院学报》
CAS
CSCD
北大核心
2010年第5期614-620,共7页
Journal of the Graduate School of the Chinese Academy of Sciences
基金
辽宁省博士启动基金(20071014)
辽宁省重大项目(2008212003)
辽宁省基金(20092079)资助
关键词
玉米
需水规律
灌溉预报
CROPWAT
corn
water requirement regulation
irrigation forecast
CROPWAT
