弥烟技术防治苹果病虫害效果试验

Test of Fumigation Method on Prevention and Control of Apple Diseases and Pests

通过田间试验,比较了烟雾机弥烟施药技术和常规喷雾法防治苹果病虫害的效果。结果表明:弥烟区苹果白粉病第7、14 d的防效为92.28%、96.18%,比常规区防效提高6.32、7.78个百分点;弥烟区苹果小卷叶蛾药后5、10、15 d防效均为100%,比常规区防效提高8.3、25.0、29.4个百分点;弥烟区苹果红蜘蛛药后1、3、7、14 d的防效为72.50%、90.23%、96.39%、97.49%,比常规区提高23.20、15.15、6.20、5.98个百分点。烟雾机弥烟施药技术对苹果病虫害的防治效果明显优于常规喷雾法,省工、省力、节约成本。

The control effects on apple diseases and pests of the method of fumigation pesticide formed by the smoke machine were compared to that of the method of conventional spray. The control effect of the fumi- gation method on powdery mildew was 92. 28% and 96. 18% respectively on the 7th and 14th day, which in- creased by 6. 32 and 7. 78 percent points respectively compared to the conventional spray method; the control effect on Olethreutidae was 100% on the 5th, 10th and 15th day, which increased by 8.3, 25.0 and 29.4 percent points respectively; the control effect on red spider was 72. 50%, 90. 23%, 96. 39% and 97.49% respectively on the 1st, 3rd, 7th and 14th days, which increased by 23.20, 15.15,6.20 and 5.98 percent points respectively. The fumigation method had obvious better control effects on apple diseases and pests than that of conventional spray method, and could save labour and cost.