The correlation analyses between the rate of RSV diseased plants in
the current pentad and the meteorological parameters two pentad
prior, which were obtained from Dongtai Meteorological Observatory
Station between 2002 and 2010, included wind speed,mean air temperature,
maximum air temperature, minimum air temperature, relative
humidity, precipitation, and insolation duration. The analysis revealed
the following: (1) the correlation between the rate of RSV diseased
plants and the wind speed was significant and negative; the correlation
coefficient was −0.468 (P=0.01). This finding indicates that a higher
wind speed weakens the chance of occurrence of rice stripe disease.
(2) The correlation between the rate of RSV diseased plants and the
relative humidity was significant and positive; the correlation coefficient
was 0.263(P=0.01). This finding indicates that a higher relative humidity
promotes the development of rice stripe disease. (3) The correlation
between the rate of RSV diseased plants and the insolation duration was
significant and negative; the correlation coefficient was −0.208(P =
0.05). This finding indicates that a longer insolation duration prevents
the occurrence of rice stripe disease. (4) Precipitation,mean air temperature,
maximum air temperature, and minimum air temperature were not
significantly related to the rate of RSV diseased plants. These four meteorological
parameters have less influence on the occurrence and spreading
of RSV.