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目前,植物生长调节剂已广泛应用于农作物生产.植物生长调节剂一般用量很少,所配药液浓度多以ppm(即百万分之一)为单位,配
At present, plant growth regulators have been widely used in crop production.Plant growth regulators are generally used in small quantities, the concentration of the solution with more ppm (ie, one millionth) as a unit, with