Slow and controlled-release polymeric fertilizer with multiple nutrients, preparing process for the same and the use method of the same
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United States of America Patent
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Jul 13, 2010
Grant Date -
Nov 23, 2006
app pub date -
Apr 7, 2006
filing date -
Apr 7, 2005
priority date (Note) -
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Abstract
This invention relates to a slow and controlled-release polymeric fertilizer with multiple nutrients having the following general formula:wherein n, m and M are defined in the description.The polymeric fertilizer of this invention is an environment-friendly slow and controlled-release fertilizer. Its slow and controlled release action lies in self-degradation and hydrolysis. This invention also relates to the preparing process for the fertilizer and the use method of the fertilizer in agriculture.
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