西南林业大学学报2018，Vol.38Issue(1)：79-84,6.DOI:10.11929/j.issn.2095-1914.2018.01.013
氮素对香根草吸收和去除扑草净的影响
Effects of Nitrogen on Vetiveria zizanioides Absorbing and Removal of Prometryn
摘要
Abstract
With Vetiveria zizanioides as the research object,through greenhouse cultivation,sample testing and laboratory analysis,the absorption and removal effects of V.zizanioides on monocotyledonous nutrition was studied under the conditions of high concentration of nitrogen(0.49 mg/L),medium concentration of nitrogen(0.33 mg/L) and low concentration of nitrogen(0.16 mg/L).Results showed that nitrogen could significantly improve the absorp-tion of V.zizanioides root system on prometryn in monocotyledon nutrient solution. Meanwhile, it promoted transfer of prometryn between the root system and stem leaves. When nitrogen concentration level was medium, the mini-mum residual rate of prometryn in the solution was 1.80%. The maximum removal rate of V.zizanioides on prome-tryn was 18.07%. When the nitrogen concentration level was low at the 40thday of test,the residual rate of prome-tryn in the solution was 1.86%. The removal rate of V.zizanioides on prometryn was 16.51%. V.zizanioides showed better growth trend under medium and low nitrogen levels compared with that at high concentration nitrogen level at the 40thday of test. In addition,it had better absorption and removal effect on prometryn in monocotyledon nutrient solution.关键词
氮素/浓度/香根草/扑草净/吸收Key words
nitrogen/concentration/Vetiveria zizanioides/prometryn/absorb分类
农业科技引用本文复制引用
刘书楷,王铭,郑毅..氮素对香根草吸收和去除扑草净的影响[J].西南林业大学学报,2018,38(1):79-84,6.基金项目
国家自然科学基金项目(41563014,31460551)资助. （41563014,31460551）
