东北三省地区生长季旱涝对春玉米产量的影响

王蔚丹, 孙丽, 裴志远, 马尚杰, 陈媛媛, 孙娟英, 董沫

Effect of Growing Season Drought and Flood on Yield of Spring Maize in Three Northeast Provinces of China

Weidan WANG, Li SUN, Zhiyuan PEI, Shangjie MA, Yuanyuan CHEN, Juanying SUN, Mo DONG

表1 SPI和SPEI对应的旱涝等级划分标准［14，21］

Table 1 Classification of moisture categories based on SPI and SPEI［14，21］

指数值 旱涝等级 ≥2.00 极端湿润 1.50~2.00 严重湿润 1.00~1.50 中度湿润 0.50~1.00 轻度湿润 -0.50~0.50 正常年份 -1.0~-0.5 轻度干旱 -1.5~-1.0 中度干旱 -2.0~-1.5 严重干旱 ≤-2.0 极端干旱