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Atrazine Adsorption Behavior on a fluvo-aquic soil as Influenced by Contact Periods

Pedosphere 2007年第6期17卷 786-791页

作者： DENG Jian-Cai JIANG Xin LU Xin YU Gui-Fen Wang Fang ZHANG Bin State Key Laboratory of soil and Sustainable Agriculture Institute of Soil Science Chinese Academy of Sciences Nanjing 210008. （China）. Nanjing Institute of Geography and Limnology Chinese Academy of Sciences Nanjing 210008 （China） Department of Food Science and Bioengineering Bengbu College Bengbu 233000 （China）

A batch experiment was performed to investigate nonequilibrium adsorption behavior of atrazine （2-chloro-4-ethylamino-6-isopropylamlno-1,3,5-triazlne） on a fluvo-aquic soil. The amount of atrazine sorbed increased with increasing adsorption contact periods. For a range of initial atrazlne concentrations, the percentage of atrazine sorbed within 24 h ranged from 24% to 77% of the observed total amount sorbed for the longest contact period; when adsorption contact periods were more than 72 h, the deviations in curves fitted using a nonlinear Freundllch equation gradually became less. The opposite trend was observed for the atrazine concentrations in solution. The effect of adsorption contact periods on atrazine adsorption behavior was evaluated by interpreting the temporal variations in linear and nonlinear Freundlich equation parameters obtained from the phase-distribution relationships. As the adsorption contact period increased, the nonlinear Freundlich capacity coefficient kf showed a significant linear increase （r^2 = 0.9063, P 〈 0.001）. However, a significant negative linear correlation was observed for the nonlinear coefficient n, a dimensionless parameter （r^2 = 0.5666, P 〈 0.05）. Furthermore, the linear distribution coefficient kd ranged from 0.38 to 1.44 and exhibited a significant linear correlation to the adsorption contact period （r^2 = 0.72, P 〈 0.01）. The parameters kf and n obtained from a time-dependent isotherm rather than the distribution coefficient kd estimated using the linear Freundlich equation were more appropriate to predict the herbicide residue in the field and thus more meaningful for environmental assessment.

关键词： adsorption contact periods atrazine fluvo-aquic soil Freundlich equation parameters

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Characteristics of Magnesium Release from fluvo-aquic soil and Relative Availability of Magnesium to Plants

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Pedosphere 2000年第3期10卷 281-288页

作者： WANGHONG CHUTIANDUO KeyLaboratoryofPlantNutritionofMinistryofAgriculture InstituteofSoilandFertilizerChineseAcademyofAgriculturalSciencesBeijing100081China KeyLaboratoryofPlantNutritionofMinist

Experiments including two in laboratory and one in greenhouse were carried out to study non- exchangeable magnesium release from fluvo-aquic soils sampled from Daxing and changping counties located in the suburbs of Beijing and Mg relative availability of the two soils to plants. In a batch experiment in laboratory the soils were incubated under wet conditions and alternation of dry and wet conditions and determined for amount of Mg released at the 4th, 8th and 12th week, respectively, after extraction of exchangeable Mg with 1 mol L-1 NH4Ac. The amount of Mg released from the soil of Daxing was higher than from the soil of Changping, which was in accordance with the fact that the soil of Daxing had higher contents of all forms of Mg than that of Changping. There was little difference in Mg release from soils between wet conditions and alternation of dry and wet conditions. About 1%~2% of the total non-exchangeable Mg might be released within 12 weeks of incubation, restoring about 30%~35% of the original soil exchangeable Mg. Results of the experiment on kinetics of Mg release from the soils through continuous extractions with 0.5 mol L-1 NH4Ac (pH 7.0) on a continuous flow apparatus in laboratory showed that Mg released rapidly in the beginning, decreased sharply with time and kept stable at 60 and 240 min for the soils of Changping and Daxing, respectively. Among the five mathematical models used to describe the kinetics of Mg release, the parabolic diffusion equation best fitted the cumulative Mg release, indicating that diffusion of Mg out of the soils might be the controlling process. The experiment of exhaustive cropping with 1 crop of tomato (Lycopersicon esculentum Mill.) followed by six crops of corn (Zea mays L.) in greenhouse showed that soil exchangeable Mg decreased remarkably with cropping. After three crops, the percentage of the total plant Mg uptake that came from soil non-exchangeable Mg was 29.5% for the soil from Changping and 35% for the soil f

关键词： fluvo-aquic soil kinetics magnesium availabiliy magnesium relea

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Effects of Long-term Located Fertilization on Evolution of Available Phosphorus and Phosphorus Pool in Shandong fluvo-aquic soil

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Agricultural Biotechnology 2018年第2期7卷 74-80页

作者： Yingpeng ZHANG Gang DUAN Cuiping SUN Ziwen ZHONG Ming SUN Yongping JING Jiafa LUO Luji BO Yan LI Institute of Agricultural Resources and Environment Shandong Academy of Agricultural SciencesJinan 250100China Agricultural Bureau of Changqing District Jinan 250300China Key Laboratory of Agro-environment of Huang-Huai-Hai Plain Ministry of AgricultureJinan 250100China Key Laboratory of Wastes Matrix Utilization Ministry of AgricultureJinan 250100China Shandong Provincial Key Laboratory of Agricultural Non-Point Source Pollution Control Jinan 250100China Shandong Provincial Engineering Research Center of Environmental Protection Fertilizers Jinan 250100China Ruakura Research Centre AgResearch LimitedHamilton 3240NewZealan

This study was conducted to investigate the effects of long-term located fertilization on soil phosphorus,the changes of soil available phosphorus(OlsenP),the evolution of soil total phosphorus(TP)and the ratio change of Olsen-P to TP(PAC)by 33-year fertilization experiments in winter wheat-summer maize rotation system in Shandong fluvo-aquic *** treatments were designed as no fertilization(CK),nitrogen fertilizer(N),nitrogen and phosphate fertilizer(NP),nitrogen and potassium fertilizer(NK),phosphate and potassium fertilizer(PK),nitrogen-phosphate-potassium fertilizer(NPK),reduced NPK fertilizer(N(15)PK),and increased NPK fertilizer(N_(25)PK).Meanwhile,eight organic fertilizer-added treatments were designed based on the application of inorganic fertilizer the same as the above *** results showed that TP,Olsen-P and PAC of treatments added with organic fertilizer were higher than those without organic fertilizer,and those of the treatments applied with phosphate fertilizer were higher than those of no phosphate *** the increase of years,soil P pool decreased due to crop absorption,nutrient loss and morphological transformation and other causes under the treatments of without and only phosphate fertilizer,while remained stable under the treatments added with organic *** PAC values were generally lower in fluvo-aquic soil,and it could be improved by the application of organic *** the whole,the application of chemical phosphate fertilizer combined with organic fertilizer could improve the phosphorus content in soil and ensure the supply of phosphorus *** study would provide scientific basis for fertilization management and soil fertility in fluvo-aquic soil.

关键词： Long-term located fertilization fluvo-aquic soil Total phosphorus Available phosphorus Phosphorus pool Activity coefficient

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Effects of Conservation Tillage on the Content of Carbon, Nitrogen in fluvo-aquic soil

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Agricultural Science & Technology 2016年第2期17卷 379-384页

作者：陈文超梁晓辉徐生马宏卫何建桥刘建明南京市耕地质量保护站江苏南京210036 南京宁粮生物肥料有限公司江苏南京211135

In order to verify organic carbon cycle under conservation tillage condition and the promotion mechanism of soil fertility and offer scientific theory support for the popularization and application of conservation tillage technological, the research investigated effects of different tillage treatments on the content of total organic car- bon, total nitrogen and different components of them in fluvo-aquic soil based on a long-term experiment site of conservation tillage. The research revealed effects of conservation tillage on the content of carbon, nitrogen in fluvo-aquic soil by study the distribution of soil total organic carbon, total nitrogen, dissolved organic carbon, dissolved organic nitrogen, microbial biomass carbon, liable carbon in different soil depth under different tillage treatments. The results showed that compared to con- ventional tillage treatment, contents of soil total organic carbon under intermittent tillage （tillage once every 2 or 4 years） and no-tillage treatment improved by 1.81%, 6.43%, 14.04%, respectively and contents of soil total nitrogen went up by 0.80%, 10.04%, 7.93%, respectively. Contents of soil total organic carbon and total nitrogen in 10-20 cm soil layer under no-tillage treatment were significantly lower than the other treatments. Under the condition of straw returned, intermittent tillage and no- tillage could significantly improve the content of soil dissolved organic carbon and ni- trogen in 0-5 cm and 5-10 cm soil. Compared to conventional tillage treatment, content of soil microbial biomass carbon and liable carbon in 0-5 cm soil under in- termittent tillage and no-tillage were improved in varying degrees. Content of soil microbial biomass carbon in 10-20 cm soil layer under no-tillage treatment was sig- nificantly lower than the other treatments. Straw returning had improved the content of soil total organic carbon, total nitrogen, dissolved organic carbon and other com- ponents of active organic carbon in varying degr

关键词： Conservation tillage fluvo-aquic soil Total nitrogen Active carbon

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Nutrient Limiting Factor and Agronomic Efficiency of Wheat in fluvo-aquic soil District in Northwest of Shandong Province

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Agricultural Science & Technology 2013年第8期14卷 1191-1194页

作者：马征魏建林郭洪海张柏松董晓霞徐长英崔荣宗山东省植物营养与肥料重点实验室山东省农业科学院农业资源与环境研究所山东济南250100 山东省农业科学院农业资源与环境研究所山东济南250100

[Objective] This study aimed to provide basis for rational fertilizer application of wheat in fluvo-aquic soil in the northwest of Shandong Province.[Method] In this paper,the treatments of reduced N,P and K were set in order to explore the effects of fertilizer recommendation based on ASI systematic approach on wheat yield,agronomic efficiency and recovery rate of nutrients.[Result] Nitrogen was the main limiting factor for wheat production in that area,followed by phosphorus,and the third was *** with the optimum treatment （OPT）,the reduction of N,P and K reduced the grain yield obviously,which came up to 22.4％,14.4％ and 13.4％ *** were no obvious differences in grain yield among Farmer＇s Fertilization Practice （FP）,60％ OPT-N and OPT treatment.[Conclusion] Agronomic efficiency of N,P and K was 6.3,12.9 and 10 kg/kg *** recovery rates of N,P and K in wheat season were 16.41％,17.27％ and 27.27％ respectively.

关键词： Wheat fluvo-aquic soil Yield Nutrient limiting factor Agronomic efficiency

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Kinetics of Phosphate Release from Three Phosphate-Treated soils

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Pedosphere 2005年第4期15卷 518-525页

作者： LI Shou-Tian ZHOU Jian-Min WANG Huo-Yan DU Chang-Wen CHEN Xiao-Qin Institute of soil Science Chinese Academy of Sciences P. O. Box 821 Nanjing 210008 （China）.

Phosphate release from three selected soils after treatments of 1.6 and 2.4 mmol L-1 P was investigated using sequential extractions and fitted using six kinetic models, including zero order (Z), first order (F), second order (S), parabolic diffusion (PD), two constant rate (TC), and Elovich type (ET) equations. The results showed that the rate of P release was initially rapid and then gradually declined with time. Also, P release increased with added P. Total P release followed the order: paddy soil with 2.4 mmol L-1 P > red soil with 2.4 mmol L-1 P > paddy soil with 1.6 mmol L-1 P > fluvo-aquic soil with 2.4 mmol L-1 P > fluvo-aquic with 1.6 mmol L-1 P > red soil with 1.6 mmol L-1 P. For the two P treatments P release from the paddy soils in the first extraction was 44.3% and 45.6% of total released P, respectively, which were higher than those from red and fluvo-aquic soils. The ratio of P release at the end of release time was 14.0% and 13.1% in the paddy soil treated with 1.6 and 2.4 mmol L-1 P, respectively, but only 5.1% and 9.2% in the red soil and 7.0% and 5.2% in the fluvo-aquic soil, respectively. Comparison of the coefficients of determination (R2) indicated that ET, TC, and PD equations could describe the P release data better than Z, F, and S equations.

关键词： fluvo-aquic soil paddy soil phosphate red soil release kinetics

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Distribution of antibiotic resistant bacteria in different soil types following manure application

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soil Ecology Letters 2024年第2期6卷 137-148页

作者： Tingting Song Muhammad Fahad Sardar Xuerong Wang Binxu Li Zhuoyi Zhang Dimei Wu Changxiong Zhu Hongna Li College of Engineering Jilin Normal UniversitySiping136000China Institute of Environment and Sustainable Development in Agriculture Chinese Academy of Agricultural SciencesBeijing100081China Beijing General Station of Animal Husbandry Beijing100081China College of Environment Science and Engineering Hebei University of Science and TechnologyShijiazhuang050000China

ARB was investigated in different soil types following manure ***-manure induced more resistance of soil indigenous microbes in fluvo-aquic ***,Dyella,Ralstonia,and Bacillus were the key different *** control is an ef... 详细信息

关键词： chlortetracycline-resistant bacteria(CRB) soil types manure application fluvo-aquic soil LEfSe analysis

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Effect of climate change on the trends of evaporation of phreatic water from bare soil in Huaibei Plain, China

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Journal of Groundwater Science and Engineering 2017年第3期5卷 213-221页

作者： SHANG Man-ting LIU Pei-gui LEI Chao LIU Ming-chao WU Liang Hefei University of Technology 230009 Heifei Province China

When the soil condition and depth to water table stay constant, climate condition will then be the only determinant of evaporation intensity of phreatic water from bare soil. Based on a series of long-term quality-controlled data collected at the Wudaogou Hydrological Experiment Station in the Huaibei Plain, Anhui, China, the variation trends of the evaporation rate of phreatic water from bare soil were studied through the Mann-Kendall trend test and the linear regression trend test, followed by the study on the responses of evaporation to climate change. Results indicated that in the Huaibei Plain during 1991-2008, evaporation of phreatic water from bare soil tended to increase at a rate of 5% on monthly scale in March, June and July while in other months the increase was minor. On the seasonal basis, the evaporation saw significant increase in spring and summer. In addition, annual evaporation tended to grow evidently over time. When air temperature rises by 1 °C, the annual evaporation rate increases by 7.24–14.21%, while when the vapor pressure deficit rises by 10%, it changes from-0.09 to 5.40%. The study also provides references for further understanding of the trends and responses of regional evapotranspiration to climate change.

关键词： Climate change Evaporation of phreatic water from bare soil fluvo-aquic soil Huaibei Plain Lime concretion black soil

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Effects of Long-term Located Fertilization on the Physico-chemical Property of soil Humus

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Agricultural Sciences in China 2002年第4期1卷 424-431页

作者： SHI Ji-ping, ZHANG Fu-dao and LIN Bao(School of Agriculture, Shanghai Jiao Tong University, Shanghai 201101 , P.R. China soil and Fertilizer Inst. CAAS , Beijing 100081 , P.R. China ) School of Agriculture Shanghai Jiao Tong University Shanghai 201101 P.R. China soil and Fertilizer Inst. CAAS Beijing 100081 P.R. China

A systematic study concerning the effects of a long-term stationary fertilization on content and property of soil humus in fluvo-aquic soil sampled from Malan Farm, Xinji City, Hebei, and arid red soil and paddy red soil sampled from the Institute of Red soil, Jinxian County, Jiangxi was conducted. The results showed that long-term fertilization had effects not only on the content and composition of soil humus, but also on the physico-chemical property of humus. With applying organic manure or combined application of organic manure and chemical fertilizer, E4 and E6 values of humic acid decreased in fluvo-aquic soil and arid red soil, but increased in paddy red soil. In paddy red soil, E4 and E6 values of humic acid increased also with a single application of chemical fertilizer, but E4 and E6 values had less change of humic acid in fluvo-aquic soil and arid red soil. The effects on the visible spectroscopic property of f ulvic acid were different from that of humic acid. Long-term application of organic manure or combined application of organic manure and chemical fertilizer could increase E4 and E6 values of f ulvic acid in three types of soil. Single application of chemical fertilizer had less effect on the E4 and E6. Long-term fertilization could also influence the ultraviolet spectroscopic property of humus. With a single application of organic manure or combined application of organic manure and chemical fertilizer, the ultraviolet absorbance of humic acid and f ulvic acid increased in the three types of soil. But this effect was obvious only in short wave length, and the effect could decrease if the wave length increased. With a single application of chemical fertilizer the ultraviolet absorbance of fulvic acid could increase, but it of humic acid increased only in fluvo-aquic soil. Long-term application of organic manure or combined application of organic manure and chemical fertilizer could increase the content of total acidic groups, carboxy groups and phe

关键词： Long-term located fertilization soil humus fluvo-aquic soil Arid red soil Paddy red soil

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Effects of Long-term Located Fertilization on Wheat Yield and soil Nutrients of Three Types of soils in Shandong Province

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Agricultural Science & Technology 2014年第3期15卷 400-406,426页

作者：张英鹏刘兆辉李彦仲子文孙明井永苹山东省农业科学院农业资源与环境研究所山东济南250100 农业部黄淮海平原农业环境重点实验室山东济南250100 山东省农业面源污染防控重点实验室山东济南250100 山东省农业科学院山东济南250100

[Objective] This study aimed to investigate the effects of long-term differ- ent fertilization in three types of soils on wheat yield and soil nutrient variation in Shandong Province. [Method] A 30-year located experiment in Jinan of Shandong Province was selected and the results of soil nutrient and crop yield in 1984, 1987, 1988, 1989, 1990, 2001, 2005, 2006, 2007 and 2010 were measured and collected. In this study, five treatments： CK, NP, NK, PK and NPK of the located experiment were selected. [Result] The three types of soils in wheat yields decreased signifi- cantly in the first several years and in 2006. Wheat yields of the treatments with P fertilizers were obviously higher than those without P fertilizers; it was shown that phosphorus is the primary nutritional factor for high-yielding of wheat. The highest yield is from cinnamon soil, followed by that from brown soil, and the lowest pro- duction is from fluvo-aquic soil. Under the same fertilization, the influence of other factors on wheat yield of brown soil is the smallest, while cinnamon soil is vulnera- ble to the influence of external conditions, resulting in larger fluctuation of annual wheat yield. The alkali-hydro nitrogen contents of three kinds of soils first de- creased, then raised, and at last reduced apparently. Since 2007, the change of al- kali-hydro nitrogen content appeared rebounded. The available P contents of no- phosphorus treatments decreased over time while those of the treatments with P fertilizers increased at first, then decreased, and after that kept relatively stable. The available K contents of no K treatments decreased slowly. The treatments of PK and NK had higher available K content than NPK treatment. [Conclusion] Thus, it is an effective fertilization measure to improve the wheat yield by supplying reasonable phosphate fertilizer and nitrogen fertilizer and making up potassium fertilizer.

关键词： Long-term located fertilization Brown soil fluvo-aquic soil Cinnamon soil Wheat yield soil nutrient

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