The backbone of the graft copolymer comprises a humic acid salt.
所述接枝共聚物的主链包括腐殖酸 盐。
The invention discloses a humic acid composite slow-release fertilizer and a method for preparing the same.
本发明公开了一种腐植酸复合缓释肥料及其生产方法。
The present invention relates to a humic acid type composite spray fertilizer, a real multielement composite fertilizer.
本发明是腐植酸型复合喷淋肥，它是真正的多元素复合肥。
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