摘要
为了研究一季稻生长对高温胁迫的响应,更好地补充和完善一季稻高温热害气象指标,本研究利用2013年合肥夏季高温数据和田间试验数据,运用统计分析方法对2013年合肥地区出现的极端高温对田间试验的一季稻‘徽两优6号’抽穗扬花过程以及结实率产生的影响进行分析。结果表明：一季稻抽穗扬花期是对高温最敏感的时期;验证了已建立的高温热害气象指标,并对其补充完善：抽穗扬花当天和前后2~5天的持续高温对一季稻的影响最为严重。进一步分析表明：高温天气直接造成空秕率明显上升,结实率下降。
The paper aims to study the response of rice to heat stress and complement meteorological index ofhigh temperature damage to single cropping rice. Based on data of high temperature in Hefei in 2013, theauthor adopted the method of field experiments and statistical analysis, and analyzed the effects of high-temperature on the heading and flowering process and seed- setting rate of single cropping rice‘No.6Huiliangyou＇in filed trial. The results showed that heading and flowering stage of single cropping rice was themost sensitive to high-temperature. The meteorological index of high temperature established was verified andcomplemented. The effects of high-temperature were the most serious on the day of heading and flowering and2- 5 days around it. Further analysis showed that the rice sterile rate and abortive grain rate significantlyincreased and the rate of seed setting declined with high-temperature.
出处
《中国农学通报》
2015年第21期244-248,共5页
Chinese Agricultural Science Bulletin
基金
公益性行业(气象)科研专项"长江中下游地区高产优质一季稻生长气象指标体系研究"(GYHY201306035)
关键词
一季稻
高温
影响
single cropping rice
high temperature
effect
