杂交中籼稻年度间产量与气象要素的相关性分析

Correlation Analysis between Meteorological Elements and the Yield of Hybrid Midseason Rice in Different Years

以1990—2004年湖北省中稻区域试验汇总资料及武汉、荆州、襄阳气象站的气象要素测报资料为依据,分析了各气象要素与杂交中籼稻年度间产量的相关性。结果表明,各气象要素均对杂交中籼稻产量产生了不同程度的影响,从气象要素与杂交中籼稻产量的相关性分析结果可以看出,高产年份要求杂交中籼稻在生殖期间日平均日照时间不少于6.4 h,日平均蒸发量不低于5.5 mm,日平均地温在30.0～32.5℃,日平均气温在27.0～28.3℃,日平均昼夜温差大于7.5℃,日平均空气相对湿度在70%～80%,累计降雨量应在100～220 mm范围内。高产年份必须是各种气象要素都处在适宜范围的最佳组合,若一项或多项气象要素指标没有达到上述适宜范围就会导致低产或中产。

Based on the summary information of hybrid midseason Indicia rice regional trial in Hubei province from 1999 to2004 and the data of weather station in Wuhan, Jingzhou, Xiangyang city, the correlation between meteorological elements and the yield of hybrid midseason 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, the correlation analysis results showed that the requirements for the reproduction period of the hybrid midseason rice in the productive yield year were as follows ： Average daily sunshine hours were no less than 6.4 hours, average daily evaporation was no less than 5.5 mm,average daily ground temperature was within 30.0~32.5 ℃, average daily air temperature was within 27.0~28.3 ℃,average diurnal temperature was above 7.5 ℃,average daily air humidity was within 70%~80%,cumulative precipitation was within 100~220 mm. The productive yield year must be the optimal combination of various meteorological elements in appropriate range, if one or more of the meteorological elements suitable indicators did not meet the above range, then the low or middle yield could appear.