朝阳干旱类型与粮食产量及抗旱对策  

Drought Types and Food Yield and Drought Resistant Countermeasures in Chaoyang

作　　者：周广学[1] 李普庆[1] 周晓东[1] 

机构地区：[1]辽宁省朝阳市气象局,辽宁朝阳122000

出　　处：《安徽农业科学》2010年第23期12873-12875,共3页Journal of Anhui Agricultural Sciences

摘　　要：对朝阳地区的自然降水状况从区域分布、季节和年季变化等几个方面进行了详细的阐述,并根据朝阳地区的几个代表站近50年降水和蒸发的气候资料,对朝阳地区干旱状况进行科学系统的分析,首次将朝阳地区不同季节的干旱划分为不同类型,并利用产量分解的原理和科学模拟的方法,对朝阳地区5个县近50年的主要农作物产量与4～9月份的降水距平进行科学的相关分析,找出了在气象产量部分起主要作用的气象限制因子。同时,根据农田水分平衡的基本原理,利用多学科的理论知识,对于如何提高朝阳地区自然降水利用率、充分挖掘水分资源、争取农业生产的全面丰收,提出改善生态环境、培育抗旱品种、调整作物布局等科学对策。The natural precipitation status in Chaoyang District was discussed from aspects of regional distribution,seasonal and annual variation. According to rainfall and evaporation data in recent 50 years from several typical stations in Chaoyang,the drought status was analyzed. The drought in each season of Chaoyang was divided into different types,and by using decomposition principle and the scientific simulation method,the main crops＇ yield in recent 50 years in 5 counties of Chaoyang and precipitation anomaly during Apr.-Sep. was analyzed to find out the main weather restricting factors. Meanwhile,according to the basic principles of farmland water balance and multi-disciplinary theoretical knowledge,some countermeasures were put forward,such as improving eco-environment,culturing drought resistant varieties and adjusting crop layout,so as to improve the utilization of natural precipitation in Chaoyang District,fully tap the water resources,fight for the full harvest of agricultural production.

关 键 词：干旱类型 粮食产量 抗旱对策 

分 类 号：S423[农业科学—植物保护]