以平展型玉米品种正大999为试验对象,选择4种不同化控剂为试验处理,研究了玉米化控剂对玉米主要农艺性状、群体生长及产量的影响。试验结果表明,与对照处理(清水)相比,经过化控处理后,正大999的株高和穗位高显著降低,抗倒伏能力明显增强;叶面积指数呈下降趋势,叶片比叶重无明显变化;群体干物质积累量在大喇叭口期与对照差异不显著,成熟期则显著低于对照;玉米矮壮、矮吨、乙烯利、控旺专家等化控处理的玉米产量显著下降,减产幅度在7.1%~16.8%。综合试验结果说明,玉米矮壮、矮吨、乙烯利和控旺专家等4种化控剂有利于增强玉米植株的抗倒伏能力,但在当地生产条件下亦容易造成田间减产,生产上要慎选玉米化控剂。 The experiment was conducted on Zhengma 999, a flat-typed maize variety, and 4 different chemical agents were chosen as experimental treatments to study the effects of maize chemical control agents on the main agronomic characters, population growth and yield of maize. The results showed that compared with CK, the plant height and ear height of Chia Tai 999 decreased markedly and the lodging resistance increased significantly after the chemical treatment. The leaf area index showed a downward trend and the leaf specific weight was not significant The dry matter accumulation of the population was not significantly different from that of the control at the stage of trumpet trumpeter and that at the mature stage was significantly lower than that of the control; the maize yield under chemical control such as short sturdy corn, short stubble, ethephon, The rate of 7.1% ~ 16.8%. The comprehensive test results showed that four kinds of chemical control agents such as short sturdy corn, short stubble, ethephon and ZWO were conducive to enhancing the lodging resistance of maize plants. However, under the local production conditions, it is also easy to reduce the production in the field and be cautiously selected for production Corn chemical control agent.