除草劑對(duì)土壤微生物生物量碳、氮及呼吸的影響-資料下載頁
2025-08-18 17:13本頁面
【正文】 vities in soil[J]. Appl Microbial, 1970, 19: 479484.[18] 朱魯生, 王軍. 乙草胺和莠去津?qū)ν寥牢⑸锏挠绊懠鞍踩栽u(píng)價(jià)[J]. 土壤與環(huán)境, 2000, 9(1):7172.Zhu Lusheng, Wang Jun. Effects of acetochlor and atrazine on respiration of soil microbe[J]. Soil and Environmental Sciences, 2000, 9(1):7172.Effect of three herbicides on microbial biomass C, N and respiration in paddy soilYao Bin1, Zhang Chaonan21. Institute of Forest Ecology, Environment and Protection, CAF, Key Laboratory of Forest Ecology and Environment, State Forestry Administration, Beijing 100091, China。 2. College of Agriculture, Guanxi University, Nanning 53005, ChinaAbstract: Laboratory incubation experiments were conducted to evaluated the affection of metsulfuronmethyl, butachlor and atrazine to microbial biomass carbon, biomass nitrogen and soil basal respiration in a paddy soil. The biomass C and N were determined by the chloroform fumigation and extraction method. The dissolved organic carbon content in the supernatant was measured on a Shimadzu TOC500 automated Total Organic Carbon Analyzer. The Kjeldahl Nitrogen Determination method was applied to measure the dissolved organic nitrogen content in the supernatant. The direct absorption method was used to measure the soil basal respiration. Result showed that microbial biomass C, microbial biomass N and soil basal respiration rate decreased significantly in soil treated with three herbicides at a level of 10 mgkg1 especially within the initial 20 days incubation, then this effect decreased after 20 days. The sequence of the affection of three herbicides on biological indicators for soil quality was: metsulfuronmethyl＞atrazine, butachlor. Maybe the degradation velocity of herbicides were one main reason conduced these phenomenon.Key words: herbicides。 microbial biomass carbon。 microbial biomass nitrogen。 soil basal respiration
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