| 汪调霞，刘亚青.保湿型高粘附缓释叶面肥的制备及性能研究[J].广东农业科学,2022,49(2):64-72 |
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保湿型高粘附缓释叶面肥的制备及性能研究 |
| Research on Preparation and Properties of MoisturizingHighly-adhesive Slow-release Foliar Fertilizer |
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| DOI：10.16768/j.issn.1004-874X.2022.02.008 |
| 中文关键词: 半互穿聚合物网络结构 高粘附 保湿 养分缓释 叶面肥 |
| 英文关键词: semi-interpenetrating polymer network structure highly-adhesive moisture retention slow release of nutrients foliar fertilizer |
| 基金项目:山西省教育厅“聚合物基功能新材料山西省‘1331 工程’重点创新团队”项目；山西省教育厅“新材料产业创新学科群建设”项目；山西省应用基础研究计划面上青年基金（201901D211273） |
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| 中文摘要: |
| 【目的】研制粘附性能、吸水性能、缓释性能优异，具有半互穿聚合物网络结构的保湿型高粘附
缓释叶面肥。【方法】采用聚乙烯醇（PVA）和丙烯酸（AA）为原料制备吸水树脂，利用半互穿网络技术将尿
素醛穿插到吸水保水网络中，制备得到保湿型高粘附缓释叶面肥，研究聚乙烯醇与丙烯酸质量比（mPVA/mAA）、
交联剂加入量对叶面肥吸水性能的影响，以及吸水树脂加入量对叶面肥粘附性能、缓释性能的影响。【结果】
当聚乙烯醇与丙烯酸的质量比为 1 ︰ 2、交联剂加入量为 0.5% 时，制备的保湿型高粘附缓释叶面肥具有最大吸
水率，在自来水中最大吸水率为 68.5 g/g。m(PVA+AA)/mUrea=2 ︰ 1 时，叶面肥在包菜叶片的氮、磷保留率分别高达
80% 和 40%；叶面肥氮磷养分在 7~10 d 释放达到平衡，缓释性能良好。【结论】研究结果对于解决目前常规叶
面肥粘附性差、无保湿性能、无缓释性能的问题具有十分重要的意义。 |
| 英文摘要: |
| 【Objective】The study aims to develop a moisturizing high-adhesion slow-release foliar fertilizer with
a semi-interpenetrating polymer network structure and excellent adhesion, water absorption and slow release properties.
【Method】Polyvinyl alcohol (PVA) and acrylic acid (AA) were used as raw materials to prepare water-absorbent
resin, and semi-interpenetrating network technology used to interpenetrate urea aldehyde into the water-absorbing and
water-retaining network to prepare moisturizing high-adhesion slow-release foliar fertilizer. The effects of mass ratio of
polyvinyl alcohol to acrylic acid (mPVA/mAA) and addition amount of cross-linking agent on the water absorption property
of foliar fertilizer and the effects of addition amount of water-absorbent resin on the adhesion and slow-release properties
of foliar fertilizer were studied.【Result】When mPVA/mAA is 1 ∶ 2 and the addition amount of cross-linking agent is
0.5%, the prepared foliar fertilizer has the maximum water absorption rate, which is 68.5 g/g in tap water. When m(PVA+AA)/ m(Urea) = 2 ︰ 1, the retention rates of nitrogen and phosphorus of foliar fertilizer on cabbage leaves reach 80% and 40%,
respectively; the release of nitrogen and phosphorus nutrients of leaf fertilizer achieves balance in 7-10 days, with good
slow-release performance.【Conclusion】The research is of great significance to solve the problems of poor adhesion, no
water absorption, and no slow-release properties of conventional foliar fertilizers. |
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