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Chinese Agricultural Science Bulletin ›› 2015, Vol. 31 ›› Issue (21): 244-248.doi: 10.11924/j.issn.1000-6850.casb15010090

Special Issue: 水稻

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Analysis of extreme high-temperature effects to the single cropping rice in Hefei

伍晓玲,周建平,于堃,江春 and 王传辉   

  • Received:2015-01-14 Revised:2015-03-24 Accepted:2015-04-01 Online:2015-07-28 Published:2015-07-28

Abstract: The paper aims to study the response of rice to heat stress and complement meteorological index of high temperature damage to single cropping rice. Based on data of high temperature in Hefei in 2013, the author adopted the method of field experiments and statistical analysis, and analyzed the effects of hightemperature on the heading and flowering process and seed- setting rate of single cropping rice‘No.6 Huiliangyou’in filed trial. The results showed that heading and flowering stage of single cropping rice was the most sensitive to high-temperature. The meteorological index of high temperature established was verified and complemented. The effects of high-temperature were the most serious on the day of heading and flowering and 2- 5 days around it. Further analysis showed that the rice sterile rate and abortive grain rate significantly increased and the rate of seed setting declined with high-temperature.