基于专利文献计量来看我国土壤调理剂发展趋势

为更好追踪土壤调理剂产品的发展趋势,了解当前土壤调理剂专利的特点,本研究以DII(Derwent Innovations Index)专利数据库为数据源,检索和搜集了从2011年以来国内外发表的土壤调理剂专利,并从土壤调理剂的原材料来源和功能等方面对公开的土壤调理剂专利进行归类和分析。结果表明:2011—2020年国内外申请的土壤调理剂1 997件专利中,我国土壤调理剂申请数量的所占比例为84%,原材料主要是农业废弃物、化学制剂和天然矿物。其功能主要集中在改良土壤结构、培肥土壤、改良盐碱地、钝化土壤重金属方面。2019—2020年我国在钝化重金属方面功能相关的土壤调理剂专利在国内的数量所占比例为17.3%,在历年中比例最高。土壤调理剂新型材料的研发、制备工艺和作用机制的创新以及材料功能的复合是今后发展趋势。

Trend of soil conditioner in China based on bibliometric analysis on patents

In order to track the development trend of soil conditioner and understand the characteristics of current soil conditioner patents, the patents published from 2011 to present obtained from the DII(Derwent Innovations Index)patent database were analyzed from the aspects of the raw materials and functions using the bibliometric method. The results showed that a total of domestic and foreign 1 997 patents were published at home and abroad from 2011 to 2020 and the patents from China accounted for 84%. The raw materials adopted in Chinese patents mainly included the agricultural wastes, chemical agents and natural minerals, and their functions mainly include the improvement of soil structure and crop yield, amendment of the saline soil and heavy metal passivation. Taking the function of heavy metal passivation as an example, this kind of patents accounted the highest proportion of 17. 3% from 2019 to 2020. The research development of new materials of soil conditioner, innovation of preparation technology and immobilization mechanisms, and combination of material functions are recommended in this study as the future development trends.