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春小麦是耐低温作物,在摄氏一至二度时就可以萌动发芽。出苗前后可以忍受零下六度乃至八度的低温。因此在清明前,当土壤化冻一寸半至二寸时即可顶凌播种。它的好处是:小麦扎根深,根系发育好,防止早衰;出苗后进入分蘖期的温度较低,有利于小麦分蘖,增加分蘖时间,提高有效分蘖率,增加株数和穗数;在小麦抽穗时,气温也比较适宜,能增加小穗的结实率,增
Spring wheat is a low-temperature crop that germinates at 1-2 degrees Celsius. Before and after emergence can tolerate minus six or even eight degrees of low temperature. Therefore, before the Ching Ming, when the soil thawing an inch and a half to two inches when the top Ling sowing. Its benefits are: wheat rooted deep, good root development to prevent premature aging; emergence temperature after entering the tillering stage is lower, is conducive to tillering of wheat, increase tillering time, increase the effective tillering rate, increase the number of plants and spikes; wheat heading , The temperature is also more appropriate, can increase the spikelet seed setting rate, increase