| 5种不同作用机理除草剂对青海高原农田土壤微生物的影响研究 |
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| 引用本文： | 李玮. 5种不同作用机理除草剂对青海高原农田土壤微生物的影响研究[J]. 安徽农学通报, 2014, 0(11): 74-77 |
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| 作者姓名： | 李玮 |
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| 作者单位： | 青海省农林科学院植物保护研究所，青海西宁 810016;青海省农业有害生物综合治理重点实验室，青海西宁 810016;农业部西宁作物有害生物科学观测实验站，青海西宁 810016 |
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| 基金项目： | 公益性行业（农业）科研专项：除草剂安全使用技术研究与示范（201203098）. |
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| 摘 要： | 研究了5种不同作用机理除草剂对青海高原土壤微生物生物量的影响。结果表明：土壤微生物类群对不同除草剂具有各自不同的反应。从影响时间看，影响大小依次为：百草枯〉氟磺胺草醚〉溴苯腈〉氟乐灵〉精喹禾灵；从影响程度看，精喹禾灵对土壤微生物生物量的影响是这5种除草剂中最小的；氟乐灵、百草枯、溴苯腈、精喹禾灵对土壤微生物生物量的影响表现为“抑制-恢复”；氟磺胺草醚对土壤微生物生物量的影响表现为“抑制-激活-恢复”。
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| 关 键 词： | 除草剂 土壤微生物 微生物量碳 微生物量氮 |
Effects of Five Different Mechanism of Herbicides on Soil Microbes in Qinghai Plateau |
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| LI Wei. Effects of Five Different Mechanism of Herbicides on Soil Microbes in Qinghai Plateau[J]. Auhui Agricultural Science Bulletin, 2014, 0(11): 74-77 |
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| Authors: | LI Wei |
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| Affiliation: | LI Wei (IInstitute of Plant Protection,Qinghai Academy of Agriculture and Forestry Sciences,Xining 810016,China; 2Key Laboratory of Agricultural Integrated Pest Management, Xinning 810016, China; 3Scientific Observing and Experimental Station of Crop Pest in Xining,Ministry of Agricuhure,Xining 810016,China) |
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| Abstract: | The effects of five different concentrations of herbicides on soil microbial biomass were investigat-ed in Qinghai plateau.They were found that the effects of different herbicides varied on different microbial biomass in soil.In terms of effective time period to inhibit soil microbial biomass in soil,the order from long to short of these 5 herbicides were paraquat〉 fomesafen〉 bromoxynil〉 trifluralin〉 quizalofop-p-ethyl. In terms of magnitude of the impact,quizalofop-p-ethyl had the lowest impact on soil microbial biomass.Ef-fects of trifluralin,paraquat,bromoxynil,quizalofop-p-ethyl showed inhibition and recovery on soil microbial biomass,effect of fomesafen on soil microbial biomass showed inhibition,activation and recovery. |
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| Keywords: | Herbicide Soil microbial biomass Microbial biomass C Microbial biomass N |
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