Selenium-rich slow release coated urea
A slow-release bag and urea technology, which is applied in fertilizer mixtures, fertilization devices, applications, etc., can solve the problems of low utilization rate of urea nitrogen, and achieve the effects of prolonging the use period of fertilizer efficiency, strengthening plants, and enhancing absorption
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specific Embodiment approach 1
[0011] Specific embodiment one: in this embodiment, a kind of selenium-enriched slow-release coated urea is a granule formed by wrapping the fertilizer core with cold-soluble polyvinyl alcohol as a binder and bentonite as a coating material; the bentonite is The weight of the fertilizer core is 2%-5%, and the fertilizer core comprises 15-35 parts of urea, 5-10 parts of antibacterial peptide and 10-20 parts of chelated selenium according to the ratio of parts by weight.
[0012] The total validity period of the fertilizer described in this embodiment reaches 180-260 days. In this embodiment, the fertilizer utilization rate is increased to 30%-40%, and the fertilizer consumption is reduced by 20%-33%. Using the present embodiment under the condition of the same amount of fertilizer can increase grain production by 15-30%, vegetables by 20-50%, and economic crops by more than 20%.
specific Embodiment approach 2
[0013] Embodiment 2: This embodiment differs from Embodiment 1 in that: the bentonite is 3% of the mass of the fertilizer core. Others are the same as in the first embodiment.
specific Embodiment approach 3
[0014] Embodiment 3: This embodiment is different from Embodiment 1 in that: the bentonite is 3.5% of the weight of the fertilizer core. Others are the same as in the first embodiment.
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