提高玉米产量的关键在推广高纯度的良种。杂交组合的优劣以及杂交种纯度极大地影响产量，而假劣种子的危害更大，甚至造成绝收。目前国内外所应用的玉米品种及纯度鉴定方法，如形态学方法、同工酶电泳法、醇溶蛋白等电聚焦法、ＨＰＬＣ法等等，或者周期太长，或者价格太贵，重 The key to increasing corn yields is to promote high-purity seeds. The pros and cons of hybrid combinations and the purity of hybrids greatly affect yields, whereas counterfeit seeds are even more detrimental and even yieldless. At present, the maize varieties and purity identification methods applied at home and abroad such as morphological method, isozyme electrophoresis, proeryrin and other isoelectric focusing methods, HPLC method, etc., or the cycle is too long, or the price is too high, the weight