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通过实验说明,当复混肥(含有机-无机及有机复混肥)中w(K2O)<10%时,可用较快速的原子吸收法代替目前标准中规定的四苯硼钾重量法或火焰光度计法测定钾含量;当复混肥中K2O含量较高时,仍宜用四苯硼钾重量法测定钾含量。
Experiments show that when the compound fertilizers (including organic - inorganic and organic compound fertilizer) w (K2O) <10%, can be more rapid atomic absorption method instead of the current standard provisions of tetrabenzene potassium gravimetric method or flame Photometric method for the determination of potassium content; when the compound fertilizer K2O content is higher, potassium tetraphenylborate should still be gravimetric method for the determination of potassium content.