大同市古店公社山底大队科研组,为了促进玉米早熟,避过早霜为害,去年作了玉米打叶与剥皮晒棒试验。8月2日(蜡熟期)从单作玉米田选择生长正常的植株,削掉雄穗,并分别打去雌穗上部1-4片叶。结果测定,打1叶的千粒重337克,打2叶的千粒重271克,打3叶的千粒重243克,打4叶的千粒重213克;雌穗以上全部削掉的, Datong City Gudian commune at the end of mountain brigade scientific research group, in order to promote corn precocious, avoid the early frost damage, last year made corn leaf-stripping and peeling sun-stick test. August 2 (wax maturity) Select from a single field for the growth of normal corn plants, cut off the tassel, and respectively hit the upper part of the ear 1-4 leaves. The results of determination, playing a leaf weight of 337 grams of grain weight, play two leaves of the thousand grain weight 271 grams, hit the three leaves of the thousand grain weight 243 grams, playing four leaves thousand grain weight 213 grams;