DC复合生长调节剂对玉米主要农艺性状的影响及抗倒伏作用研究

在玉米植株生长至10~12片可见叶期，用0.3%的PC复合生长调节剂喷施上部叶片1次，可显著降低玉米的株高和穗位、有效提高玉米的抗倒伏能力。通过对掖单13号、郑单13号、豫玉27号和安玉13号玉米的试验，其成熟期株高分别比对照降低了24.2~50.2cm；穗位分别比对照降低了14.8cm~27.3cm。但株高和穗位的降低对供试玉米的百粒重和穗粒重等某些主要农艺性状有不同程度的影响。过氧化物酶同工酶和可溶性蛋白电泳的分析结果表明，PC复合生长调节剂处理可明显引起供试玉米体内生理生化水平上的变化。

Study on effects of PC Compound Plant Growth-regulator on Main Agronomy Characters and Lodging Resistance in Maize

Maize palnts were treated with PC compund plant growth-regulator at 0.3% comcentration during 10~12 leaves show that the growth-regulator can significanty decrease the plant height,ear height and increase the resistance to loding of maize.In the experiments of Yedan 13, Zhengdan 13, Yuyu 27 and Anyu 13, the plant height decrease by 24.2~50.2cm and the ear height decrease by 14.8~27.3cm compared with controls,and had a certain effect on its 100-grain weight,grain weight per ear and yield.In addition, the results of electrophoretic analysis of peroxidase isozyme and souluble protein showed that it could give rise to the change of maize on physiology and biochemistry level after PC plant growth-regulator treatment.