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以5年生翠冠梨为供试品种,以常规化学药剂与清水为对照,开展了HSAF防控梨叶部病害及早期落叶试验。结果表明,HSAF对梨叶部主要病害、早期落叶与返花返青具有一定防控作用,但其效果极显著差于常规化学药剂。8月中旬对梨炭疽病、梨褐斑病、梨黑斑病、梨斑点病的防效分别为28.21%、15.53%、68.32%和0.82%,仅为常规化学药剂的50.81%、20.53%、77.36%和1.89%;控制早期落叶、返花、返青效果分别为43.14%、39.4%和60.65%,仅为常规化学药剂的54.68%、40.29%和62.17%,至10上旬落叶率、返花率与清水对照已无明显差异。
Taking 5-year-old Cuiguan pear as the test variety, the HSAF pear leaf disease and early deciduous leaf test were carried out with conventional chemicals and fresh water as control. The results showed that HSAF had some preventive and control effects on the main diseases of pear leaves, early deciduous leaves and rejuvenation, but its effect was significantly worse than that of conventional chemical agents. In mid-August, the control effects on pear anthracnose, pear spot blotch, pear spot blotch and pear blotch disease were 28.21%, 15.53%, 68.32% and 0.82% respectively, only 50.81% and 20.53% of that of conventional chemicals, 77.36% and 1.89%, respectively. The control effect of early deciduous, returning flower and returning green was 43.14%, 39.4% and 60.65% respectively, only 54.68%, 40.29% and 62.17% of that of conventional chemical, No significant difference with the control of water.