首页 | 本学科首页   官方微博 | 高级检索  
     检索      

环保型农林保水剂研制、性能与应用
引用本文:刘颖,耿丹丹,韩永胜,魏敏,刘柳.环保型农林保水剂研制、性能与应用[J].中国农学通报,2022,38(7):86-90.
作者姓名:刘颖  耿丹丹  韩永胜  魏敏  刘柳
作者单位:四川省农业科学院生物技术核技术研究所,成都 610066
基金项目:四川省科技计划项目“新型环保保水剂在农林上示范应用”(2017NZZJ013);
摘    要:为促进保水剂在农业中应用的环境安全性与合理化,利用60Coγ射线引发合成纤维素类保水剂,探索其最佳反应条件,研究尿素、不同价态阳离子对保水剂保水性能的影响,并分析保水剂在土壤中的保水性能和生物降解性,并利用红外光谱(FTIR)、扫描电镜(SEM)表征材料结构。结果表明,交联剂用量和CMCNa添加量分别为单体总质量的0.2%和20%,吸收剂量为8.47 kGy,是最佳反应条件,此时保水剂在去离子水中吸水倍率为367 g/g,15天生物降解率为6.41%。尿素浓度对保水剂的保水性能影响较小,而阳离子可显著降低保水剂的吸水倍率,抑制作用从大到小依次为Fe3+>Mg2+>Na+。合成的保水剂能减少土壤中水分流失,提高土壤含水量。因此,合成的保水剂与尿素共混施用或用于包裹尿素比较适宜,并且其具有较好的生物降解性与保水性,在农业领域有一定应用前景。

关 键 词:保水剂  60Coγ射线  生物降解  水分流失  尿素  
收稿时间:2021-03-22

Environment-friendly Superabsorbent: Development,Property and Application
LIU Ying,GENG Dandan,HAN Yongsheng,WEI Min,LIU Liu.Environment-friendly Superabsorbent: Development,Property and Application[J].Chinese Agricultural Science Bulletin,2022,38(7):86-90.
Authors:LIU Ying  GENG Dandan  HAN Yongsheng  WEI Min  LIU Liu
Institution:Biotechnology and Nuclear Technology Research Institute, Sichuan Academy of Agricultural Sciences, Chengdu 610066
Abstract:To promote the environmental safety and reasonable application of superabsorbent in agriculture, cellulosic superabsorbent is prepared by irradiation from a 60Coγ source. The optimal reaction condition in the synthetic process was explored, and the water absorption properties of the superabsorbent under different cations and urea concentrations, and the biodegradation and water retention property of the superabsorbent in soil were further analyzed. Moreover, the chemical structures of the superabsorbent were investigated by FTIR and SEM. The results showed that the optimal reaction condition was: superabsorbent composite containing 20% CMCNa and 0.2% crosslinker at absorbed dose of 8.47 kGy. The water absorption rate of the superabsorbent in deionized water was 367 g/g and the biodegradation rate was 6.41% after 15 days. The concentration of urea had little effect on the water retention property of the superabsorbent and the cations could significantly reduce the water absorption rate, and the inhibitory effect of cations on the absorption efficiency was ranked as: Fe3+> Mg2+> Na+. The superabsorbent could effectively reduce soil water loss and improve soil water content, therefore is suitable to mix with urea or added into the coating material for urea. The superabsorbent has good biodegradation and water retention property, and a certain application prospect in agriculture.
Keywords:superabsorbent  60Co γ-ray irradiation  biodegradation  water loss  urea  
点击此处可从《中国农学通报》浏览原始摘要信息
点击此处可从《中国农学通报》下载免费的PDF全文
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号