【摘要】 结果表明，小麦生长后期喷洒植物生长调节剂，能增强叶片中ＳＯＤ，ＮＲＡ 活性，减少ＭＤＡ 积累，降低旗叶电解质外渗率，提高光合速率，对促进粒重增加有一定作用－ 不同种类的生长调节剂，由于作用方式不同，增产效果也不同－ 以喷洒“得丰”效果较好更多还原

【Abstract】 The results of experiment indicated that the SOD and NRA activities,the photosynthetic rate and the grain weight were increased while the accumulation of MDA was decreased by spraying plant growth regulators in the last period of the wheat growth.Because of the different action way,the effect of yield increasing was different for different growth regulators.The treatment of spraying “defeng” had the best effect,which increased the yield by 8.84%.更多还原