53%金雷多米尔-锰锌水分散粒剂防治荔枝霜疫霉病试验

Primary report of 53%Ridomil Gold-MZ WG against Peronophythora litchii

53％金雷多米尔-锰锌水分散粒剂是58％雷多米尔-锰锌可湿性粉剂的改进型新产品，是防治卵菌纲真菌病害的高效、环保新型药剂，使用时无粉尘，对人体、环境和作物更安全，是对环境友好型的新一代水分散性颗粒杀菌剂。田间花效试验和使用技术研究结果表明，53％金雷多米尔-锰锌水分散粒剂900倍、700倍、500倍在荔枝花期施药2次，对花期霜疫霉病的防效为63．35％～77．75％；在挂果期施药3～4次，对挂果期果实霜疫霉病的防效为65．40％～79．93％，对贮藏期果实霜疫霉病的防效为62．36％～75．24％，均显著优于对照药剂80％大生可湿性粉剂600倍的防效。其可作为58％雷多米尔-锰锌可湿性粉剂防治荔枝霜疫霉病替代药剂，值得在生产上进一步示范和推广使用。

Ridomil Gold- MZ 53 % WG is a new fungicide which shows specifically high activity against Peronophythora litchii, The result of tests in fields showed that Ridomil Gold - MZ 53% WG using 1 ： 900,1 ： 700,1 ： 500 for twice gave a control effect of 63.35 % - 77.75 % during florescence phase, and for 3 - 4 times gave a control effect of 65.40 % - 79.93 % during fruit beating phase and 62.36% -75.24% during fruit storing phase against Peronophythora litchii. These results demonstrated that 53% Ridomil Gold- MZ WG had a better control effect against than 80% Dasbeng（mancozeb） WP（ 1 ： 600）, and it was worthy to be popularized on the growing practice.