Welcome to Journal of Agriculture,

Journal of Agriculture ›› 2019, Vol. 9 ›› Issue (7): 62-67.doi: 10.11923/j.issn.2095-4050.cjas18030032

Special Issue: 小麦 农业气象

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Regional Moisture-dependent Meteorological Factors’Change Affect Wheat Yield in Linfen

  

  • Received:2018-03-30 Revised:2018-05-29 Accepted:2018-06-06 Online:2019-08-13 Published:2019-08-13

Abstract: To provide suitable cultivating techniques of wheat under future climate change, the dynamic change, correlation and effect on wheat yield of seven moisture-dependent meteorological factors from 1987 to 2017 in Linfen were studied, including rainfall, temperature, soil temperature (10 cm), evaporation, wind speed, relative humidity and sunshine hours. The results showed that the factors’dynamic variation characteristics were: in wheat growth stage each year, the rainfall, mean temperature and mean soil temperature (10 cm) increased progressively, however, evaporation, sunshine hours, mean relative humidity and mean wind speed decreased progressively; the evaporation of every season was summer> spring> autumn> winter in wheat production year, the evaporation of every month was 6>7>5>8>4>3>9>10> 2>11>1>12. Mean temperature was significantly and negatively correlated with evaporation; mean wind speed and sunshine hours were positively correlated with evaporation; the coefficient of variation was rainfall> evaporation> mean wind speed> mean relative humidity> mean soil temperature> sunshine hours> mean temperature; the mean temperature of every season and month were positively correlated with evaporation. In wheat growth stage, mean temperature, mean soil temperature (10 cm) and sunshine hours were negatively correlated with wheat yield; but mean relative humidity, evaporation, rainfall and mean wind speed were positively correlated with yield; rainfall was positively correlated with yield, and the correlation coefficient of different periods’rainfall with yield was production year> growth stage> fallow period. The study could provide technological support for wheat production under climate change.

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