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[目的]验证氟吗啉.锰锌50%WP对黑龙江省马铃薯晚疫病的防治效果。[方法]在黑龙江省马铃薯主产区内随机选择3个试验点,于2008和2009年连续2年进行氟吗啉.锰锌50%WP对马铃薯晚疫病的田间药效研究。[结果]在各供试处理中,氟吗啉.锰锌50%WP(3次,1125 g a.i./hm2)对马铃薯晚疫病具有很好的防治效果(平均防效>80%),氟吗啉.锰锌50%WP(3次,750 g a.i./hm2)和霜脲.锰锌72%WP(3次,1 080 g a.i./hm2)的防效相当(平均防效均>75%),也表现出对抗晚疫病有较好的防治作用;并且各供试药剂处理均能提高马铃薯产量,氟吗啉.锰锌50%WP(3次,1125 g a.i./hm2)的增产率最高,2008年平均增产率为19.51%,2009年平均增产率为21.08%。[结论]氟吗啉.锰锌50%WP不仅对马铃薯晚疫病有较好的防治效果,还可以保证马铃薯稳产、增产。
[Objective] The experiment was to verify the control effect of flumorph, manganese and zinc 50% WP on potato late blight in Heilongjiang Province. [Method] Three test sites were randomly selected in the main potato producing areas of Heilongjiang Province. The field efficacy of flumorph, Mn-Zn 50% WP on potato late blight was studied in 2008 and 2009. [Result] Flumorph, Mn-Zn 50% WP (3 times, 1125 g ai / hm2) had good control effect on potato late blight (average control effect> 80%), Manganese and zinc 50% WP (3 times, 750 g ai / hm2) and cream U. Manganese and zinc 72% WP (3 times, 1080 g ai / hm2) , And also showed a good control effect against late blight. And the yield of potato could be increased by all treatments, and the yield of flumorph, Mn-Zn 50% WP (3 times, 1125 g ai / hm2) In 2008, the average rate of increase was 19.51%. In 2009, the average rate of increase was 21.08%. [Conclusion] Flumorph, Mn-Zn 50% WP not only had a good control effect on late blight of potato, but also ensured the yield and stability of potato.