信阳粳稻晚播气候适宜度分析

发布时间：2019-01-03 13:05

【摘要】：以信阳市近35年(1980-2014年)晚播粳稻幼苗期、分蘖期、拔节孕穗期、抽穗扬花期和灌浆成熟期等5个生育阶段的平均气温、降水量和日照时数等数据为基础,利用前人研究的气候适宜度公式模型,计算研究信阳粳稻晚播后的气候适宜度。结果表明,苗期气温、降水和日照气候适宜度分别为0.98、0.99和0.63,综合值0.85,适宜度高;分蘖期分别为0.99、0.51和0.54,综合值0.65,适宜度一般;拔节孕穗期分别为0.99、0.87和0.67,综合值0.83,适宜度较高;抽穗扬花期分别为0.70、0.99和0.56,综合值0.73,适宜度较高;灌浆成熟期分别为0.60、0.98和0.57,综合值0.73,适宜度较高。可见,信阳粳稻适当晚播后的气候适宜度总体较为适宜。
[Abstract]:Based on the data of average temperature, precipitation and sunshine hours in five growth stages of late sowing japonica rice in Xinyang City in recent 35 years (1980-2014), such as seedling stage, tillering stage, jointing and booting stage, heading and flowering stage and grain filling maturity stage, etc. The climatic suitability of Xinyang japonica rice after late sowing was calculated by using the model of climate suitability. The results showed that the climatic suitability of temperature, precipitation and sunshine at seedling stage was 0.980.99 and 0.63, respectively, with a comprehensive value of 0.85 and a high suitability, while at tillering stage it was 0.990.51 and 0.54, with a comprehensive value of 0.65. At jointing and booting stage, the comprehensive value was 0.83 and 0.79, respectively, and the suitable degree was higher, and that at heading and flowering stage was 0.70, 0.99 and 0.56, respectively, and the comprehensive value was 0.73, which was higher than that at flowering stage. The maturation period of grain filling was 0.60U 0.98 and 0.57 respectively, the comprehensive value was 0.73, and the suitability was higher. It can be seen that the climate suitability of Xinyang japonica rice after proper late sowing is more suitable.
【作者单位】：河南省信阳市农业科学院;
【基金】：河南省重大科技专项“豫南稻区籼改粳技术研究与产业化”(121100110200) 国家水稻产业技术体系建设项目
【分类号】：S511.22;S162.53

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