湖北省一季中稻籼改粳气象条件利弊分析

发布时间：2018-09-07 13:12

【摘要】：本文在试验基础上,利用统计分析和模型模拟的方法,分析了湖北省一季中稻籼改粳气候资源利用率、高温热害和低温冷害风险变化,分析了湖北省一季中稻籼改粳适宜品种、适宜播期,提出了若干建议。主要结论有:(1)湖北省一季籼改粳能进一步提高气候资源利用率;(2)籼改粳后抽穗开花期遭遇高温热害的风险增加、低温冷害风险降低;(3)在中稻供试品种中,甬优1540(籼粳杂交)是籼改粳最适宜的品种,热粳优35、中稻1号在各生态区适应性均不如甬优系列;(4)北部地区一季粳稻播期应安排在4月下旬,南部地区播期安排在5月上中旬,能保证80%的年份抽穗一开花避开高温热害高风险期。
[Abstract]:On the basis of the experiment, using statistical analysis and model simulation, this paper analyzed the climate resource utilization ratio, the risk of high temperature heat damage and low temperature chilling injury, and analyzed the suitable variety of one season medium indica rice to japonica rice in Hubei province. Some suggestions are put forward for suitable sowing time. The main conclusions are as follows: (1) the utilization rate of climatic resources can be further improved by the transformation of one-season indica to japonica rice in Hubei Province; (2) the risk of high temperature heat damage and low temperature chilling injury in flowering stage after indica rice transformation from japonica rice to japonica rice is increased, and (3) the risk of low temperature chilling injury is decreased in medium rice varieties. Yongyou 1540 (indica japonica hybrid) is the most suitable indica to japonica variety, Rejing you 35 and Zhongdao 1 are not as adaptable as Yongyou series in all ecological regions. (4) the sowing date of japonica rice in the first season in the northern region should be arranged in late April, and the sowing date in the southern region should be arranged in the first half of May. It can guarantee 80% year heading and flowering to avoid high temperature heat damage and high risk period.
【作者单位】：武汉区域气候中心;华中农业大学植物科学技术学院;湖北省气象局;武汉农业气象试验站;
【基金】：湖北省气象局基金项目(2013Z01) 公益性行业(气象)科研专项(GYHY201306035)共同资助
【分类号】：S511;S42

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