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番茄早疫病是由半知菌茄链格孢侵染引起的一种顽固性真菌性病害。本试验首次利用10亿活孢子/g的皮尔瑞俄类芽孢杆菌对陕西番茄主产区的早疫病进行了防治试验。采用叶面喷雾、灌根、喷雾+灌根共3种处理方法。试验结果表明,采用喷雾+灌根的组合处理方法对该病害防治效果最佳,防效达91.96%。同时可有效抑制病斑的扩展,并提高番茄产量。灌根防治效果也较好,防效可达84.59%。而喷雾法对番茄早疫病的防治效果一般,防效为78.85%。另外,处理后的叶面、果面和根系周围土壤的皮尔瑞俄类芽孢杆菌菌落数明显增加。
Tomato early blight is a stubborn fungal disease caused by Alternaria solani infection. This experiment for the first time using 1 billion live spores / g of Pirinacearum in Shaanxi tomato early blight prevention and control test. Using foliar spray, irrigation root, spray + irrigation root a total of 3 treatments. The results showed that the combination spray + irrigation treatment of the disease best control effect, control effect of 91.96%. At the same time can effectively inhibit the expansion of lesions, and increase tomato yield. Iridium root control effect is also better, control effect of up to 84.59%. The spraying method on tomato early blight prevention and control effect in general, control effect was 78.85%. In addition, the number of P. berghei colonies in the treated foliar, fruit surface and soil around the root increased significantly.