【摘要】 试验测定了草酸钾、K+多因子、硫酸亚铁铵和Fe2+多因子4种诱导物对番茄叶霉病的抗病诱导效应,并测定了重复诱导和交替诱导对诱导效应的强化作用。结果表明,K+多因子诱导物的诱导效应明显高于草酸钾,Fe2+多因子诱导物的诱导效应显著高于硫酸亚铁铵,两组多因子诱导物的交替诱导效应显著高于同一组多因子诱导物重复诱导。用K+多因子诱导物和Fe2+多因子诱导物交替诱导4次,对番茄叶霉病的田间防治效果达到80%以上,高于常规杀菌剂的防治效果。更多还原

【Abstract】 Inductive effects of potassium oxalate,K+ Multi-factor s,ammonium ferrous sulfate and Fe2 + Multi-factors on resistance to tomato leaf mould and strengthening effects of repeated induction and alternative induction on inductive effect were determined in this experiment.The results showed that inductive effect of K+ multi-factors was significantly higher than potassium oxalate,and inductive effect of Fe2+ multi-factors was significantly higher than ammonium ferrous sulfate,effect of alternative induction with two combinations was better than repeated induction with single combination.Alternative induction with K+ Multi-factors and Fe2+ Multi-factors for 4 times caused control rate of leaf mould in field over 80%,which was higher than conventional fungicide.更多还原