中国农业气象 ›› 2014, Vol. 35 ›› Issue (04): 429-433.doi: 10.3969/j.issn.1000-6362.2014.04.011

• 论文 • 上一篇    下一篇

湖北省早稻适宜播期及其气候风险

曹秀霞,万素琴,吴铭   

  1. 湖北省监利县气象局,监利433300;武汉区域气候中心,武汉430074
  • 收稿日期:2013-12-14 出版日期:2014-08-20 发布日期:2015-02-11
  • 作者简介:曹秀霞(1986-),女,河南商丘人,硕士,助理工程师,主要从事农业气象灾害影响评估研究。 Email:caoxxsynx@163.com
  • 基金资助:

    湖北省气象局重点项目“湖北水稻籼改粳农业气候资源分析及利用”;长江中下游高产优质双季稻主要农业气象灾害指标试验研究(GYHY201006025)

Determination of Optimum Sowing Date and Analysis of Climate Risk for EarlyRice in Hubei Province

CAO Xiuxia, WAN Suqin, WU Ming   

  1. Jianli Meteorological Bureau in Hubei Province, Jianli433300, China; Wuhan Regional Climate Center, Wuhan430074
  • Received:2013-12-14 Online:2014-08-20 Published:2015-02-11

摘要: 利用湖北省早稻种植区4个代表气象站1953-2012年逐日气象观测资料,以1983年为时间节点,分析前后30a不同保证率下早稻安全播期的变化,并基于CERESRice作物生长模型模拟不同播种日期下的早稻潜在产量,结合低温阴雨指标统计不同播期下播种-幼苗期早稻遭受低温阴雨的风险,综合确定湖北省早稻适宜播期。结果表明:与1953-1982年相比,1983-2012年不同保证率下早稻安全播期普遍提前2~7d。在近30a气候背景下,各代表站适宜播期在50%~80%保证率下稳定通过10℃的初日之间;具体来说,武汉在3月24日-4月1日,荆门在3月26日-4月4日,荆州在3月25日-4月3日,黄石在3月23日-3月31日播种,不仅能降低早稻播种-幼苗期发生烂种烂秧的风险,还能确保高产稳产。研究结果可为湖北省早稻的播期安排提供科学依据。

关键词: 早稻, 适宜播期, CERESRice模型, 湖北省

Abstract: Based on daily meteorological data from 4 representative stations across the main early rice growing regions in Hubei province, including Wuhan, Jingmen, Jingzhou and Huangshi. The safe sowing date for early rice under different guaranteed rates during the earlier 30 years (1953-1982) and the latest 30 years (1983-2012) were detected and discussed, the optimum sowing date was comprehensively determined by comparing the potential yield simulated by using of CERESRice model with different sowing dates, as well as the corresponding risk of seedling rot indicated by a climate index. The results showed that the safe sowing dates under different guaranteed rates in 1983-2012 advanced 2-7d than that of in 1953-1982. If early rice was sowed during 24th March to 1st April in Wuhan, 26th March to 4th April in Jingmen, 25th March to 3th April in Jingzhou, 23th March to 31th March in Huangshi, which was under their 50%-80% guaranteed rates of the latest 30 years respectively, there would be a relative low risk of seed rot and seedling blight, and high yield.

Key words: Early rice, Optimum sowing date, CERES Rice model, Hubei province