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土温对玉米生长发育影响很],尤其前期最突出,不少学者对此曾进行过研究。但土温从10—40℃对玉米出苗时间、出苗地积温、体温、干鲜比值、四叶期、四叶期干重等影响的规律如何,目前还不十分清楚。我国玉米种植面积辽阔。北方一季玉米栽培区,容易遭低温灾害,尤以东北地区最严重。低温危害的特点是延迟生育。若能定量的说明玉米苗期适宜土温的作用和低土温的
Soil temperature on the growth and development of corn is very], especially the most prominent early, many scholars have conducted research on this. However, the influence of soil temperature from 10-40 ℃ on the emergence time of maize, the temperature of emergence seedling, the body temperature, the ratio of fresh to dry, the four-leaf stage and the dry weight of four-leaf stage is not yet clear. China’s vast corn acreage. A quarter of the northern corn cultivation area, vulnerable to low temperature disasters, especially in the Northeast most serious. Low temperature damage is characterized by delayed birth. If the quantitative description of corn seedling suitable for the role of soil temperature and low temperature