Yu Wen-Ying, Ji Rui-Peng, Li Zhuo-Qun, Liu Dong-Ming, Feng Rui, Wu Jin-Wen, Zhang Yu-Shu
Institute of Atmospheric Environment, China Meteorological Administration, Shenyang 110166, China.
Liaoning Province Key Laboratory of Agrometeorological Disasters, Shenyang 110166, China.
Ying Yong Sheng Tai Xue Bao. 2021 Jan;32(1):241-251. doi: 10.13287/j.1001-9332.202101.011.
Multiple agrometeorological disaster (MAD) occurs simultaneously in maize production. In order to ascertain the occurrence regularity and characteristics of MAD of maize in Liaoning Pro-vince, we defined and classified MAD, identified MAD of 50 meteorological stations in the maize growing season of Liaoning Province from 1961 to 2017, and examined the effects of MAD on maize yield in typical years. The results showed that the occurrence range of MAD was higher in most years from 1961 to 2017 than that of single agrometeorological disaster (SAD), and that the occurrence frequency of MAD was higher in most areas than that of SAD. The major MAD in Liaoning Province was drought in multiple periods (M1-D), followed by the combination of drought and delayed cold damage (M2-DC). The occurrence range of M1-D showed an upward trend from 1961 to 2017, whereas other MAD types showed a downward trend. After analyzing the occurrence of MAD in the typical years of maize yield reduction, we found that the occurrence frequency of M1-D and M2-DC was higher.
玉米生产中会同时发生多种农业气象灾害。为了查明辽宁省玉米多种农业气象灾害（MAD）的发生规律和特征，我们对多种农业气象灾害进行了定义和分类，识别了1961年至2017年辽宁省玉米生长季50个气象站的多种农业气象灾害，并考察了典型年份多种农业气象灾害对玉米产量的影响。结果表明，1961年至2017年的多数年份里，多种农业气象灾害的发生范围高于单一农业气象灾害（SAD），且多数地区多种农业气象灾害的发生频率高于单一农业气象灾害。辽宁省主要的多种农业气象灾害是多时段干旱（M1-D），其次是干旱与延迟冷害组合（M2-DC）。1961年至2017年，M1-D的发生范围呈上升趋势，而其他多种农业气象灾害类型呈下降趋势。在分析玉米减产典型年份多种农业气象灾害的发生情况后，我们发现M1-D和M2-DC的发生频率较高。
