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播种的最适温度是日平均气温16—18℃,5厘米地温为13—19℃;种子发芽最适温度为15—20℃,分蘖的最适温度为13—18℃,最低为3℃;开花的最适温度为18—20℃,灌浆的最适温度20一22℃。成穗最高的是冬前分孽,一般达85%以上。生育期中最适土壤含水量为18一20%。拔节到抽穗耗水最大,每亩每昼夜为3一4方;
The optimum temperature for sowing was 16-18 ℃ for daily average and 13-19 ℃ for 5 cm. The optimum temperature for seed germination was 15-20 ℃, the optimum temperature for tillering was 13-18 ℃, and the lowest was 3 ℃. The optimum temperature for flowering is 18-20 ℃, the optimum temperature for filling is 20-22 ℃. The highest earliest is the winter before the sin, generally more than 85%. The optimum soil moisture during the growing period is 18 to 20%. Jointing to the earliest water consumption, per acre day and night for 3 to 4 square;