Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2014, Vol. 30 ›› Issue (22): 246-250.doi: 10.11924/j.issn.1000-6850.2013-3392

Special Issue: 水稻 农业气象

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Study on Meteorological Grade Prediction of Early Rice Sheath Blight

  

  • Received:2013-12-28 Revised:2014-02-10 Online:2014-08-05 Published:2014-08-05

Abstract: In order to discuss meteorological grade prediction method of early rice sheath blight, to gain 2011-2013 early rice sheath blight incidence data, field investigation had carried out. The establishment of meteorological grade model of early rice sheath blight had made, and carried on the back to generation forecast verification. The results showed that: correlation analysis between daily rate of diseased plant and daily average temperature, precipitation, sunshine hours, relative humidity had made; the rate of diseased plant meteorological factor weight coefficient was 0.3121, 0.2056, 0.3024, 0.1799, respectively. The establishment of meteorological grade model of early rice sheath blight had made, accuracy rate was 100% for prediction. Meteorological grade model of early rice sheath blight had better forecast effect, and a certain guiding role in prevention and treatment of disease, could be used to forecast the daily meteorological grade of sheath blight.