生物源杀菌剂与化学药剂协调防控番茄病害

Control effect of joint application of biofungicides and synthesized fungicides on tomato diseases

为了阐明化学药剂与生防菌剂及植物源杀菌剂交替使用对番茄病害发展的影响,田间试验检测了交替施药的防病效果及病害发展曲线下面积。结果表明,枯草芽孢杆菌BAB-1水剂及化学药剂交替喷施7次对番茄灰霉病、叶霉病、晚疫病和早疫病的防效分别为86.9%、61.0%、72.3%和77.2%。植物源杀菌剂1-氧-乙酰基大花旋覆花内酯(ABL)乳油与化学药剂及生防菌剂枯草芽孢杆菌BAB-1水剂交替喷施9次对上述病害的防效分别为88.6%、87.4%、85.4%和83.2%,相当于不同作用机制的化学药剂交替喷施9次的防效。此外,化学药剂与BAB-1水剂及ABL乳油交替喷施明显延缓了这4种病害的发展,减少了化学药剂施用次数。

The control efficacy and area under the disease progress curves（AUDPC） of alternate application of biofungicides with synthesized fungicides were detected in the trials conducted in tomato greenhouses to elucidate the effects of alternate application of synthesized fungicides with biocontrol agents and plant-derived fungicides on development of tomato diseases.The results showed that 7 alternate applications of Bacillus subtilis BAB-1 AS with synthesized fungicides had control efficacy of 86.9%,61.0%,72.3% and 77.2% for gray mould,leaf mould,late blight and early blight on tomato,respectively.Nine alternate applications of the plant-derived fungicide 1-O-acetylbritannilactone（ABL） EC with synthesized fungicides and the biocontrol agent B.subtilis BAB-1 AS,showed control efficacy of 88.6%,87.4%,85.4% and 83.2% for the four air-borne fungal diseases as mentioned above,respectively.Moreover,the development of the four diseases were obviously delayed and applications of synthesized fungicides were cut down through alternate applications of synthesized fungicides with BAB-1 AS and ABL EC.