Fertilizer compsn - contg phosphoric acid treated with urea and methyl cellulose as aggregating agents

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专利权人:

发明人:

申请号：

DE19712101289

公开号：

DE2101289(A1)

申请日:

1971.01.13

申请国别(地区):

德国

年份:

1972

代理人:

摘要：

Process for prepg. fertilizers from salt mixts. or from mixts. of salts and colloids, pref. silica gels contg. metal ions, N cpds. of retarded uptake by plants and phosphoric acid cpds. with an activating effect on the plant, the salt-colloid mixt. being treated with >=1 acids and aggregated by coating with urea and methyl-cellulose.

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