Known as the "granary of China", the south of Henan had been struck by higher-than-normal rainfall in the last week of May days ahead of the harvest of wheat planted in the last winter.
Medium to heavy precipitation can be expected in the south of Henan on Saturday, national weather forecasters reported on Thursday.
China's winter wheat accounts for the majority of the country's annual wheat output.
China, including important grain-growing provinces like Henan, is no stranger to floods and droughts.
But abnormal weather patterns such as excessively heavy rain still risk devastating key crops and squeezing supplies.
Persons:
Ryan Woo, Sonali Paul
Organizations:
Thomson
Locations:
BEIJING, Henan, China, Zhumadian, Nanyang