前言玉米是喜温作物,过去国内外有不少研究资料证明,温度的高低对玉米的生长发育有着重大的影响。H.A.Wallaco、Н.Н.Кулешов、В.И.Балюра、А.И.Руденко等均证明了玉米播种至出苗时间的长短受温度而变化,P.A.Lehenbauer指出幼苗的生长速度与温度的高低及所处理的时间有关,沃罗达尔斯基根据许多资料确定:玉米播种至出苗所需有效积温(土壤10厘米处温度)为128℃左右,同时也证明:温度条件对 Foreword Corn is a thermophilic crop, in the past there are many research data to prove that the temperature of corn growth and development have a significant impact. HAWallaco, Н.Н.Кулешов, В.И.Балюра, А.И.Руденко and so on all prove that the length of time from sowing to emergence of maize varies with temperature, PALehenbauer points out the growth rate and temperature of seedling and the temperature Of the time, Vododarski is based on a number of sources that determine the effective accumulated temperature (about 10 cm above the soil) for sowing corn to about 128 ° C, and also prove that the temperature conditions