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选用５种化学诱导剂和４种生物诱导剂分别试验分析了其对杨树苗木体内过氧化物酶活性的影响。试验结果表明： ＳＡ、 ＬＭＳ、 ＰＭＡ化学试剂和 Ａ、 Ｂ、 Ｃ、 Ｄ生物试剂都能有效地提高杨苗体内过氧化物酶活性，ＹＱ、ＹＬ提高过氧化物酶活性的能力较弱。
The effects of five chemical inducers and four kinds of biological inducers on peroxidase activity in poplar seedlings were analyzed. The results showed that SA, LMS, PMA chemical reagents and A, B, C, D biological reagents can effectively improve the peroxidase activity of Yang seedlings, YQ, YL improve the peroxidase activity is weak.