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在供试播期内,早播(4月21日)对百粒重、子粒大小、穗粒重和子粒含水量均有正效应;适播(4月28日)对子粒容重、果穗整齐度有正效应。中晚熟品种4月28日播种、晚熟品种4月21日播种,产量和质量最佳。在早播前提下生育后期追氮肥增产显著,晚播对产量、质量均有负效应。
In the test sowing date, early sowing (April 21) had positive effect on the grain weight, grain size, grain weight per ear and seed water content; suitable sowing (April 28) Positive effect. Medium-late-maturing varieties sown on April 28, late-maturing varieties sown on April 21, the best yield and quality. In the early stage of sowing late yield nitrogen fertilizer yield significantly, late sowing on the yield, quality has a negative effect.