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通过对5种药剂进行马铃薯晚疫病防治效果的多点试验,结果表明:用52.5%噁酮.霜脲氰水分散粒剂405g/hm2、68.75%氟菌.霜霉威悬浮剂1 125mL/hm2、72%霜脲.锰锌可湿性粉剂1 500g/hm2、25%双炔酰菌胺悬浮剂600mL/hm2、58%甲霜灵锰锌可湿性粉剂1 500g/hm2防控马铃薯晚疫病均有较好的防效,增产效果达极显著水平,特别是前4种药剂的增产幅度达到40%左右,但以52.5%噁酮.霜脲氰的净收益最高,72%霜脲.锰锌次之。因此,湖北省马铃薯晚疫病的药剂防治要做好预测预警、抓住关键时期、选用经济有效药剂、合理轮换用药,以保证马铃薯的稳产、高产。
The results showed that the water-dispersible granule of Azoxystrobin was treated with 52.5% of ketorolac sodium azide and 405g / hm2, 68.75% , 72% cream urea.Mnz and zinc wettable powder 1 500g / hm2, 25% mandrel carboxamide suspension 600mL / hm2, 58% metalaxylMnz wettable powder 1 500g / hm2 control potato late blight have The results showed that the yield of the first four agents reached about 40%, but the net gain of 52.5% of the ketanurin and cymoxanil was the highest, with 72% of the cream urea, manganese and zinc times It Therefore, the prevention and treatment of potato late blight disease in Hubei Province should do a good job of forecasting and early warning, seize the critical period, the selection of cost-effective agents, rational rotation of medication to ensure the potato’s stable yield and high yield.