TITLE:
Could Rice Yield Change Be Caused by Weather?
AUTHORS:
Wen Yu, Yu Wang, Denghua Li, Shiwei Xu, Ahmed Abdul-Gafar
KEYWORDS:
Meteorological Factors, Rice Yield Change, Model, Hainan of China
JOURNAL NAME:
Journal of Agricultural Chemistry and Environment,
Vol.5 No.1B,
April
30,
2016
ABSTRACT: Data from 4 counties of Hainan
Province of China from 1991-2012 was used to determine the weather impact on
rice yields in both early and late rice seasons with multiple regression models.
The results show there is normal weather environment for rice in the heading
stage for early season rice in May and the milking stage for late season rice
in November. For early season rice, more rain in April and June is better for
rice to boot and milk, the average temperature has negative effect for the
season rice yield ; for late season rice, the average temperature have positive
effect for the difference between rice yield and the mean of total years but in
seedling and booting stage; the rice yield difference between double season is
compared and analyzed through the difference of meteorological factors, the
results show that the precipitation gap in tillering stage has positive effect
to rice yield increasing, but against in booting stage. The relative results
should be use to forecast rice yield, and further provide the rice production
guiding.