Spatiotemporal Characteristics of Winter Wheat Waterlogging in the Middle and Lower Reaches of the Yangtze River, China

Table 2

WPI thresholds for winter wheat in the study area.

	<160	160–200	200–250	250–300	300–400	>400
SPAP thresholds for mild waterlogging	0.46	0.35	0.32	0.28	0.20	0.19
SPAP thresholds for moderate-to-severe waterlogging	0.7	0.58	0.53	0.40	0.32	0.30

Note. represents average total precipitation in spring.