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不同浓度 2 0 %辛·阿乳油防治玫瑰红蜘蛛有较好的效果 ,持效期达 12d以上 ,田间适宜稀释倍数为 15 0 0~ 2 0 0 0倍。
The different concentrations of 20% Xin · Emulsion prevention and treatment rose red spider has a good effect, persistence of more than 12d, the field suitable dilution ratio of 1500 ~ 2000 times.