摘要
采用振荡平衡法研究阿维菌素在黑壤、红壤、水稻土中的吸附、解吸特性,并进一步研究阿维菌素在稻田水土中的迁移释放规律。结果表明:3种土壤对阿维菌素均表现为很强的吸附特性,同时发现,阿维菌素在土壤中的吸附和土壤中粘粒含量相关,粘粒含量越大,土壤对阿维菌素的吸附率就越高。由稻田水向土壤迁移的试验可以看出,从水中迁移到土壤中的阿维菌素的量很低,与吸附试验有较大差别,而稻田土壤向稻田水释放试验与解吸附试验相似。因此,农药阿维菌素直接施用在水面时比施用在土壤上的污染范围大。
The oscillation balance method was used to research the adsorption and desorption characteristics in the black soil,red soil and paddy soil,and the migration and release law of abamectin in paddy water and soil was researched further.The results showed that abamectin showed strong adsorption on the three soils,the adsorption of abamectin in soil was related with the content of clay particles in soil,the more clay particles,the higher rate of adsorption of abamectin.It could be seen by the experiment of the migration of abamectin from paddy water to soil that the migration of abamectin from water to soil was very low,and it was quite different from the adsorption experiment.While the ex-periment of the release of abamectin from soil to water was similar to the desorption test.Therefore,the direct using of the abamectin on sur-face of paddy water will bring about greater scope of pollution than the using in dry paddy soil.
出处
《农业环境科学学报》
CAS
CSCD
北大核心
2012年第12期2402-2406,共5页
Journal of Agro-Environment Science
基金
湖南省研究生科研创新项目(CX2011B308)
关键词
阿维菌素
吸附
迁移
释放
面源污染
abamectin
adsorption
transportation
release
non-point source pollution
