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近年来,小麦—玉米轮作区推广“两晚一节”技术,使上、下两茬均衡增产,成效显著,小麦晚播就是其重要一环,而肥水管理技术成为晚播小麦高产稳产的关键。1、晚麦的生育特点晚麦由于播种晚,冬前积温不足,生长期短,与适时麦相比均属晚弱苗,其特点有:(1)冬前营养体小,春季返青早。由于播种晚,出苗晚、发苗也晚,因而表现根系少、分蘖少,甚至无分蘖,但分蘖节贮藏糖分多,不仅抗寒力高于适时麦,而且春季返青也早。(2)分蘖少,成穗率极
In recent years, wheat - corn rotation area promotion “two nights a section ” technology, so that the upper and lower stalks balanced production increase, the effect is remarkable, evening wheat is an important part of it, and fertilizer and water management technology to become late-sowing wheat high and stable yield key. 1, the characteristics of the late birth of wheat late wheat due to late sowing, lack of accumulated temperature before winter, short growth period, compared with the timely wheat are late weak seedlings, which are characterized by: (1) winter before the body of small, early spring green. Due to late sowing, late emergence, seedling also late, which showed less root, less tiller, or even tillering, but the tillering node storage of sugar and more than the cold hardiness is higher than the timely wheat, but also turn green early spring. (2) less tiller, spike rate extremely