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我市对玉米“春改夏”已作了多年探索。现根据本市不同年份试种夏玉米结果,结合当地气候资源、农业生态等实际情况,就沿海旱作区推广夏玉米问题,谈几点粗浅看法,供商榷。 一、种植春玉米可充分利用温光资源 我市的温光资源,全年三熟不足两,熟有余。常年0℃以上积温为5742℃,降雨量为1074.1毫米,日照2211.6小时,无霜期224天。小麦—春玉米—夏大豆三熟,所需0℃以上积温为7247.9℃,比常年增加1505.9℃;日照为2665.7小时。比常年增加454.1小
The city of corn “spring to summer” has made years of exploration. Now according to the city in different years to test the summer maize results, combined with the actual local climate resources, agricultural ecology, the promotion of summer maize coastal dry farming issues, to talk about a few superficial views for discussion. First, the cultivation of spring corn can make full use of temperature and light resources The city’s light resources, less than two full-year cooked, cooked more than. Annual temperature above 0 ℃ 5742 ℃, 1074.1 mm rainfall, sunshine 2211.6 hours, 224 days frost-free period. Wheat - spring corn - summer soybean three cooked, the required accumulated temperature above 0 ℃ 7247.9 ℃, 1505.9 ℃ than usual increase; sunshine 2665.7 hours. An increase of 454.1 from the previous year