精异丙甲草胺对甜菜田土壤主要微生物种群数量的影响

doi:10.6048/j.issn.1001-4330.2018.10.014

新疆农业科学 ›› 2018, Vol. 55 ›› Issue (10): 1879-1887.DOI: 10.6048/j.issn.1001-4330.2018.10.014

精异丙甲草胺对甜菜田土壤主要微生物种群数量的影响

宋文钰¹,吴彩兰¹,党富民²,杨德松¹

1.石河子大学农学院/ 新疆绿洲农业病虫害治理与植保资源利用自治区普通高校重点实验室,新疆石河子 832003;
2.新疆农垦科学院分析测试中心,新疆石河子 832000

发布日期:2019-01-24
通信作者: 杨德松(1977-),男,副教授,博士,研究方向为农药环境毒理学,(E-mail)yds_agr@shzu.edu.cn
作者简介:宋文钰(1994-),女,江苏泰兴人,硕士研究生,研究方向为农药毒理学,(E-mail)740713702@qq.com
基金资助:
科技部国际合作项目 “绿洲棉田生态环境监测与预警技术研究”(2015DFA11660)

Effects of S-metolachlor on the Population of Main Microorganisms in Soil of Sugar Beet Field

SONG Wen-yu¹, WU Cai-lan¹, DANG Fu-ming², YANG De-song¹

1.College of Agronomy /Key Laboratory for Oasis Agricultural Pest Management and Plant Resource Utilization at Universities of Xinjiang Uyghur Autonomous Region, Shihezi University, Shihezi Xinjiang 832003, China;
2. Analysis and Testing Center of Xinjiang Academy of Agricultural and Reclamation Sciences, Shihezi Xinjiang 832000, China

Published:2019-01-24
Correspondence author: YANG De-song(1977-),male,associate professor,,(E-mail)yds_agr@shzu.edu.cn

摘要/Abstract

摘要： 【目的】 研究不同施用量下,精异丙甲草胺对甜菜田不同土壤深度中各类主要微生物种群的变化,分析其对土壤主要微生物类群的影响作用。为精异丙甲草胺对土壤生态系统的深入研究和田间科学合理的施用奠定基础。【方法】 采用固体平板计数法,研究土壤中的细菌、真菌和放线菌进行变化趋势。【结果】 精异丙甲草胺对土壤中的细菌主要表现为抑制作用,且抑制作用与浓度呈正比,最大抑制率随着土壤深度而降低,在0~5、5~10和10~15 cm的最大抑制率分别是43.25%、32.57%、27.54%。精异丙甲草胺对土壤中真菌数量的影响主要表现为先抑制后促进的作用。最大激活率随土壤深度而降低,在0~5、5~10和10~15 cm最大激活率分别是64.10%、45.07%、27.78%。精异丙甲草胺对土壤中放线菌的影响大致为抑制-激活-恢复,最高抑制率在0~5、5~10和10~15 cm分别是62.85%、55.29%、35.40%。【结论】 低施用量的抑制作用和激活作用都不如高施用量表现的明显,且放线菌总数随着时间的变化呈现递减的趋势。

关键词: 甜菜田; 精异丙甲草胺; 施用量; 土壤微生物种群

Abstract: 【Objective】 This project aims to study the effects of S-metolachlor on the main microbial populations in different soil depths in sugar beet field and clarify its effect on soil main microbial groups.【Method】 【Result】 S-metolachlor mainly inhibited the bacteria in soil, and the inhibition was directly proportional to the concentration, and the maximum inhibition rate decreased with the depth of the soil. The maximum inhibitory rates of 0-5, 5-10 and 10-15 cm soil were 43.25%, 32.57% and 27.54%, respectively. The effect of S-metolachlor on the number of fungi in soil was inhibited first and then promoted. The maximum activation rate decreased with soil depth. The maximum activation rates of 0-5, 5-10 and 10-15 cm soil were 64.10%, 45.07% and 27.78% respectively. The inhibitory and activation effects of low application rate were not as obvious as those of high application rate. The effect of S-metolachlor on actinomycetes in soil was approximately inhibition, activation and recovery. The highest inhibition rates were 62.85%, 55.29% and 35.40% respectively in 0-5, 5-10 and 10-15 cm soil, and the total number of actinomycetes showed a decreasing trend over time.【Conclusion】 The study has established the foundation for further study on soil ecosystem and scientific and rational application of S-metolachlor in fields.

Key words: S-metolachlor; soil microbial population; influence effect

中图分类号:

S566.3

宋文钰,吴彩兰,党富民,杨德松. 精异丙甲草胺对甜菜田土壤主要微生物种群数量的影响[J]. 新疆农业科学, 2018, 55(10): 1879-1887.

SONG Wen-yu, WU Cai-lan, DANG Fu-ming, YANG De-song. Effects of S-metolachlor on the Population of Main Microorganisms in Soil of Sugar Beet Field[J]. Xinjiang Agricultural Sciences, 2018, 55(10): 1879-1887.

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精异丙甲草胺对甜菜田土壤主要微生物种群数量的影响

Effects of S-metolachlor on the Population of Main Microorganisms in Soil of Sugar Beet Field

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