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一、晚发麦的主要特点去年秋播,部分三麦播种较晚,有的拖到十一月底才结束播种。加上低温早临,持续干旱,这批晚茬麦出苗晚、分蘖晚、幼穗分化晚,苗少、苗小。冬至苗情考察表明,“早熟三号”大麦平均每亩总苗数为28.29万,比前三年同期少了。68万至12.34万,多数处在一叶一心至二叶一心阶段,大量分蘖和小穗分化将推迟到早春,以致分蘗期、穗分化期和灌浆期缩短,影响争多穗、
First, the main features of late wheat Autumn last autumn, part of the three wheat sowing later, and some until the end of November until the end of sowing. With the early arrival of low temperature, continuous drought, these late crop emergence of late wheat, late tillering, panicle differentiation late, less seedlings, seedlings. Winter solstice Miao study revealed that “precocious three” barley average seedlings per acre to 282,900, less than the same period the previous three years. 680,000 to 123,400, most in the leaf one heart to second leaf bent stage, a large number of tillering and spike differentiation will be postponed to early spring, resulting in tillering stage, ear differentiation and filling period shortening, affecting more spike,