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    Discussion on the Preparation and Application Performance of Special Fertilizer for Soybean

    ZHANG Weiwei;WU Anchang;CHENG Tingting;CHEN Jun;ZHOU Chuansheng;Anhui Huilong Group Wuhe Ecological Fertilizer Co., Ltd.;Water-Soluble Fertilizer Engineering Technology Research Center of Anhui Province;  
    The rhizobium fermentation broth is sprayed on the modified weathered coal, and after air drying, it is mixed with the trace element amino acid chelate and granulated to prepare the rhizobium composition granules; modified sodium humate and medium element amino acid chelate are used respectively to coat urea for modification; rhizobium composition granules, two kinds of coated urea and common urea, ammonium polyphosphate, potassium sulfate, and potassium tripolyphosphate are mixed in proportion to obtain a soybean special fertilizer containing rhizobium. A 2-year field fertilizer efficacy test is carried out and the test results show that compared with applying no fertilizer and applying common compound fertilizers containing the same ammount of NPK nutrients, the applycation of soybean special fertilizer containing rhizobium has significant effect on promotion of quantity, quality of rhizobium and yield of soybean.
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