摘要
针对当前农药广泛使用导致土壤环境严重遭受破坏的问题,本文以华北某区域土壤农药残留为研究对象,综合运用统计学、环境生态学及GIS相结合的方法,探讨土壤中农药残留对土壤环境指标的影响机制。结果表明,果园内吡唑醚菌酯、苯醚甲环唑、哒满灵、嘧菌酯等农药残留含量最大值普遍高于菜地;其中苯醚甲环唑与嘧菌酯与土壤环境指标中的pH、有效磷、有效锰、有效锌、Hg以及Cu有较强的相关性,表明这两种农药对土壤环境的影响较大;苯醚甲环唑在研究区内检出率较高(果园80.95%、菜地55.00%),其浓度梯度分析结果说明土壤中苯醚甲环唑残留量对有效磷有非常显著的影响,从ND—0.001 mg·kg^(−1)到0.018—0.206 mg·kg^(−1)残留浓度下,土壤中有效磷含量增加了3倍多。研究结果对于今后农业上农药种类及浓度选择上有一定的指导作用。
To the serious damage of soil environment caused by the widespread use of pesticides,this paper takes the soil pesticide residues in a certain area of North China as the research area,and comprehensively uses the methods of statistics,environmental ecology and GIS to explore the influence mechanism of pesticide residues in soil environmental indicators.The results showed that the maximum pesticide residues of pyraclostrobin,difenoconazole,pyridaben and azoxystrobin in orchards were generally higher than those in vegetable fields;difenoconazole and azoxystrobin had a strong correlation with some soil environmental indicators,the pH,available phosphorus,available manganese,available zinc,Hg and Cu.which indicated that the two pesticides had great impact on soil environment The detection rate was high(80.95%in orchard and 55.00%in vegetable field).The results of concentration gradient analysis showed that difenoconazole residue in soil had a significant effect on available phosphorus,the available phosphorus content in the soil increased more than three times formed ND—0.001 mg·kg^(−1) to 0.018—0.206 mg·kg^(−1) residual concentration.The research results play a certain guiding role in the selection of pesticide types and concentrations in agriculture in the future.
作者
庄红娟
周鹏飞
陈弘扬
宋强
方兵
杨斌
张世文
ZHUANG Hongjuan;ZHOU Pengfei;CHEN Hongyang;SONG Qiang;FANG Bing;YANG Bin;ZHANG Shiwen(School of Earth and Environmental Sciences,Anhui University of Science and Technology,Huainan,232001,China;School of Geodesy and Geomatics,Anhui University of Science and Technology,Huainan,232001,China)
出处
《环境化学》
CAS
CSCD
北大核心
2021年第8期2439-2449,共11页
Environmental Chemistry
基金
国家自然科学基金(41471186)
国家重点研发计划项目(2016YFD0300801)资助.
关键词
农药
土壤环境指标
相关性
苯醚甲环唑
浓度梯度
pesticide
soil environmental factors
pertinence
difenoconazole
concentration gradient
