The major affect on the rice production in Nanzhao county caused by the autumn low temperature is significant reduction of the seed rate and output.
秋季低温对南召县水稻生产的影响主要是显著降低结实率和产量。
The incidence was higher when MP in the summer and autumn high temperature, rainfall, high sunshine hours, the virus in the winter and spring low temperatures, drier, less sunshine.
MP在夏秋季高温、多雨、高日照时，病毒在冬春季低温、少雨、少日照时发病率高。
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