寒露风对永福县晚稻的影响及其防御对策

Analysis on the Influence and Passive Countermeasure of Cold Dew Wind for Late Rice Production in Yongfu County

为防御和减轻寒露风对晚稻生产的危害,对永福县寒露风发生情况、危害及防御措施进行研究。结果表明,永福县寒露风第1次出现的平均日期为10月1日,最早出现日期是9月19日,最晚出现日期为10月25日。9月底以前出现的寒露风对晚稻生产构成一定的影响。通过合理安排早晚稻的品种搭配和播种期,采取科学办法,加强水肥管理,可以减轻寒露风造成的损失。

The occurrence,hazards and preventive measures of cold dew wind in Yongfu County have been studied to enable effective prevention and mitigation the damage of late rice production.The results showed that the average date of cold dew wind in Yongfu County,the first occurrence was on Oct.1,the earliest date is September 19,and the latest date appear Oct.25.The cold dew wind which was appear before the end of September has an impact on early and late rice production.Simultaneously,a reasonable arrangement on the varieties collocation and sowing time of early rice,meanwhile,adopt a scientific approach,to strengthen water and fertilizer management,could reduce the crop losses from the cold dew wind influence.