文献类型：期刊文献

英文题名：Use of Rice Straw Biochar Simultaneously as the Sustained Release Carrier of Herbicides and Soil Amendment for Their Reduced Leaching

作者：Lu, Jinhong[1];Li, Jianfa[1];Li, Yimin[1];Chen, Baozhu[1];Bao, Zhangfeng[1]

机构：[1]Shaoxing Univ, Dept Chem, Shaoxing 312000, Zhejiang, Peoples R China

年份：2012

卷号：60

期号：26

起止页码：6463

外文期刊名：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY

收录：SCI-EXPANDED(收录号：WOS:000305863800001)、、EI(收录号：20122815226948)、Scopus(收录号：2-s2.0-84863455587)、WOS

基金：Funding was provided by the National Natural Science Foundation of China (20977063, 21047005) and the Research Project for Public Welfare of Zhejiang Province, China (2010C32086).

语种：英文

外文关键词：biochar; pesticide; sustained release; leaching; sorption

外文摘要：The sustained release and reduced leaching of herbicides is expected for enhancing their efficacy and minimizing their pollution. For this purpose, the rice straw biochar made at a relatively low temperature (350 degrees C) (RS350) was used simultaneously as the carrier for incorporating herbicides besides as the soil amendment. In this way, the sustained release of herbicides acetochlor and 2,4-D was obtained in the release experiments, due to the high and reversible sorption by RS350 biochar. Besides, the RS350 biochar significantly reduced the leached amount of herbicides by 25.4%-40.7% for acetochlor, and by 30.2%-45.5% for 2,4-D, depending on the depth (50 or 100 mm) of biochar-amended soil horizon. The high retention of both herbicides in the biochar-amended topsoil makes it possible to extend their efficacy. The results suggest a potential way of using low temperature biochars to reduce the leaching of herbicides without impacting their efficacy.