适时播种实质上就是把小麦、小黑麦整个生长发育周期,都安排在该地区的最适生态环境下,从而顺利地完成生育全过程而获得高产。因此,人们历来重视适时播种,把它看成夺取高产的重要一环。我省栽培的小麦、小黑麦品种多属半冬性类型,长期实践已经总结出它们的适期播种范围约在寒露至霜降之间。小麦、小黑麦迟播必然减产,这是人们早已经认识了的,但迟播时期不同减产程度也有较大差异。近年来我省由于熟制改革以及其他多种原因,每年小麦迟播 Timely sowing is in essence the wheat and triticale throughout the growth and development cycle, are arranged in the most appropriate ecological environment in the region, so as to successfully complete the entire reproductive process and obtain high yield. Therefore, people have always attached importance to timely sowing as an important part of winning high yields. The cultivated varieties of wheat and triticale mainly belong to the semi-winter type in our province. Long-term practice has concluded that their suitable sowing range is between the cold and the frost drop. It is already known to people that wheat and tritaster will be delayed as late as late sowing, but there is also a big difference in the rate of different yield cuts in late-sowing times. In recent years, due to the reform in the province as well as many other reasons, the annual delayed broadcast of wheat in our province