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晚稻产量不高不稳,是我区六十年代中期后一直没有解决的突出问题。据1964—1979年的15年统计,晚稻有6年增产,7年减产,两年平产,晚稻每年平均亩增只有8.2斤。这种低产的状况必须改变。一、晚稻产量不高不稳的主要原因影响我区晚稻生产主要是“两风两害”,即寒露风、台风、冷害、白叶枯病害。雷州半岛及东南沿海稻区,以台风灾害为主,台寒结合;中部丘陵稻区及北部山区则以寒害为主,台寒结合。十多年来,8—10月台风登陆及间接影响的次数较多,平均每年有5.1次,往往是中迟熟品种处于孕穗后期至抽穗扬花期,受
Late rice yield is not high and unstable, is my area since the mid-1960s has been outstanding issues outstanding. According to the 15-year statistics from 1964 to 1979, there was a 6-year increase in late rice, a 7-year reduction in production and a two-year average production. The average annual increase in late rice was only 8.2 kg. This low yield status must change. First, the late rice yield is not high and unstable main reason affecting late rice production in our region is mainly “two winds and two pests”, that is, cold dew, typhoon, cold damage, bacterial leaf blight. Leizhou Peninsula and the southeast coastal rice areas, mainly typhoon disasters, Taiwan combined cold; the central hilly rice and northern mountain areas are mainly cold, cold and cold. For more than a decade, the number of typhoon landings and indirect impacts has been increasing from August to October with an average of 5.1 times per year, often in late booting stages to heading and flowering stages