6种无公害农药防治北五味子白粉病农药残留分析

Analysis about Pollution-free Pesticides to Control Powdery Mildew of Schizandra Chinensis pesticide residue

选用6种无公害农药对北五味子白粉病进行防治,对农药残留情况进行测定和分析,结果表明,三唑酮20%乳油在3、6、9、20、40d后,叶片内的农药残留量最高,40d时农药残留量为19.5mg/kg,而其余几种农药残留量相对较低。据此,在防治北五味子白粉病时,应选择除三唑酮20%乳油之外的农特安32.5%可湿性粉剂、天音12.5%乳油、粉锈醇20%可湿性粉剂、良美可湿性粉剂。

Selection of the six kinds of pollution - free pesticides to the prevention and control of North Schisandra powdery mildew, measured and analyzed for pesticide residues. The results show that, triadimefon 20% EC 3, 6, 9, 20, 40 d, the highest pesticide residues within the leaves, 40d pesticide residues in the amount of 19. 5 mg. kg-1, while the remai- ning several pharmaceutical pesticide residues is relatively low. Accordingly, in the prevention and treatment of Schisandra powdery mildew, should be selected in addition to outside triadimefon 20% EC, agricultural Tean 32. 5% WP, Tianyin 12. 5% EC powder rust alcohol 20% WP, Yoshimi can wettable powder.