摘要
将安徽省冬小麦种植区划分为淮北、沿淮、江淮3个区域,采用根据大面积多种农作物平均单产求算小面积作物趋势产量的方法,计算了各区域冬小麦的减产率。分析了各区渍涝对冬小麦产量影响的最大时段,确定了主要危害因子和指标,探讨用主要因子法和Q值法构造减产率和危害因子间的相关函数,建立了安徽省各区域冬小麦渍涝灾害损失模型和综合评估模型。
In this paper, planting area of winter wheat in Anhui Province were divided into three zones, namely Huaibei, Yanhuai and Jianghuai. Based on the method calculating trend yields of crop at smaller area with the average yield of various crops in larger area,the loss ratios of wheat yield in each zone were calculated. The great effect periods of waterlogging on wheat yield were analyzed. Major effect factors and its damage indices were found. The correlative functions of yield loss ratios with effect factors in methods of major factors and Q indices were investigated.The loss model and comprehensive model for waterlogging disaster of winter wheat in three zones of Anhui Province were established.
出处
《自然灾害学报》
CSCD
北大核心
2003年第1期158-162,共5页
Journal of Natural Disasters
基金
国家"十五"科技攻关项目"农林重大病虫害和农业气象灾害的预警及控制技术研究"(2001BA509B14)
关键词
冬小麦
渍涝灾害
损失
评估
winter wheat
waterlogging
loss
evaluation
