48%仲丁灵乳油防除向日葵列当效果研究

Study on Control Effect of 48% Butralin EC against Orobanche cernua Loefling

48%仲丁灵乳油土壤处理防除向日葵列当试验结果表明,药后60 d 48%仲丁灵乳油3 000、3 375、3 750 mL/hm2的株防效分别达到70.2%、75.1%、83.2%;鲜重防效分别达到79.8%、82.5%、85.8%,经方差分析防效显著;分别增产620.00、680.00、1 080.00 kg/hm2,效果明显,且对向日葵安全;而4125mL/hm2虽然株防效、鲜重防效显著,分别达到94.4%和93.7%,但对向日葵产生药害。因此,建议生产上使用剂量3750mL/hm2。

Test of 48% Butralin EC dosage selected to deal with the soil against Orobanche cernua Loefling was carried out.The results showed that the 3 000,3 275,3 750 mL/hm^2 expressed significant control effects after 60 d.The anti-efficiency of strain were 70.2% 、75.1%、83.2%;the control effects of fresh weight were significant,which were 79.8%、82.5%、85.8%.The yield increased 620.00,680.00,1080.00 kg/hm^2 respectively and safe for sunflowers.The 4 125 mL/hm^2 also showed significantly control effect,but it was harmed for sunflowers.Therefore,3 750 mL/hm^2 was recommended using for production.