The Influence of Correlations between Meteorological Elements and the Yield Fluctuation among Years of Hybrid Indica Rice

doi:10.14088/j.cnki.issn0439-8114.2018.02.009

Abstract

Abstract: In order to explore the influence of various meteorological factors on the extent of annual production fluctuations of indica rice,based on the yield data of hybrid midseason indica rice regional area trail in Hubei province from 1990 to 2015 and the data of weather station in Wuhan,Jingzhou and Xiangyang city,the correlation between meteorological elements and the yield fluctuation of hybrid midseason indica rice in different years was analyzed. The results indicated that all meteorological elements had different effects on the yield of hybrid midseason rice in different years. From July to August during 1990-2015,and the meteorological elements from high to low level on the influence of yield fluctuation were accumulative total sunshine time,cumulative evaporation,and mean daily ground temperature, while other meteorological elements had relatively small influence. The direct correlation coefficient between the cumulative sunshine hours and the rice’s yield was 0.597 7 from July to August during 1990-2015,which reached extremely significant level; And the indirect correlation coefficient was 0.687 0, which reached extremely significant level. From July to August during 1990-2015,the cumulative sunshine X₇（X₇→X₇→Y=1.087 9） showed directly effect on the output Y had the largest,which lead to the intercropping yield fluctuation range of indica rice was 27.0%.

Key words: meteorological element, indica rice, yield fluctuation, effect, sunshine time

CLC Number:

S511

HUANG Da-ming, GUO li, DING Hong-da, GU Jian-xun, HU fei, CAO Guo-chang. The Influence of Correlations between Meteorological Elements and the Yield Fluctuation among Years of Hybrid Indica Rice[J]. HUBEI AGRICULTURAL SCIENCES, 2018, 57(2): 35-37.

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