本文提出载体缓控释肥料的概念,研制这种肥料的关键在于寻找或合成适当的功能高分子。以天然多糖A和尿素研究了载体缓控释体系。结果表明,天然多糖A与尿素有极好的相溶性,共混后加入少量交联剂对尿素起到了十分明显的缓控释作用。红外分析和X-衍射分析表明,天然多糖A和尿素之间发生了相互作用,这种作用主要表现为氢键的相互作用力,而这种氢键相互作用使得天然多糖A和尿素形成了á-螺旋或高分子网络结构的载肥体系。

The view of Carrier Fertilizer was put forward in this paper, and the key step to research this fertilizer lies in searching or synthesizing the higher functional molecule material. The controlled release tablet containing a natural polysaccharide and urea was initially studied. The results showed: Mixing of this natural polysaccharide and urea led to significantly control over urea release. Further research of IR analysis and X-diffraction analysis showed: Natural polysaccaride(NP) interacted with urea, which came from the interaction of hydrogen bond or covalent bond, and the these bonds made fertilizer carrier system of á-helix or high molecule network from the interaction of NP and urea came into being.

中国科学院资源环境领域知识创新重要方向项目(KZX2-402)和国家自然科学基金农业倾斜项目(39870431)资助。