如何配制300ppm2,4-D请问 1 克2,4-D 如何配制成300ppm2,4-D?

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如何配制300ppm2,4-D请问1克2,4-D如何配制成300ppm2,4-D?如何配制300ppm2,4-D请问1克2,4-D如何配制成300ppm2,4-D?如何配制300ppm2,4-D请问1

如何配制300ppm2,4-D请问 1 克2,4-D 如何配制成300ppm2,4-D?
如何配制300ppm2,4-D
请问 1 克2,4-D 如何配制成300ppm2,4-D?

如何配制300ppm2,4-D请问 1 克2,4-D 如何配制成300ppm2,4-D?
1PPM=1mg/L
300ppm=300mg/L
称取0.3g2,4-D定容到1L即配置好了300PPM的2,4-D

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