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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。
The effects of potassium oxalate, K + multi-factor, ammonium ferrous sulfate and Fe2 + multi-factor inducer on the leaf blight resistance of tomato were tested. The enhancing effects of repeated induction and alternating induction on the inductive effect were determined. The results showed that the induction effect of K + multi-factor inducer was significantly higher than that of potassium oxalate and the inducing effect of Fe2 + multi-factor inducer was significantly higher than that of ferrous ammonium sulfate. The induction effect of multi-factor inductors was significantly higher than that of the same multi-factor Inducer Repeated induction. The K + multi-factor inducer and Fe2 + multi-factor inducer were alternately induced four times, and the control effect on tomato leaf mold was more than 80%, which was higher than that of conventional fungicides.