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Effect of Different Soil Regulation Measures on Yield and Soil Fertility of Eucalyptus Plantation in Southern Guangxi
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作者 Fei GUO Caili HUANG +2 位作者 Xiajie QIN Weijian LIAO Jiang TANG 《Meteorological and Environmental Research》 CAS 2023年第1期29-34,40,共7页
In view of the problems of decreased unit yield,soil acidification,decreased soil organic matter and soil fertility caused by high generation single pure Eucalyptus plantation in southern Guangxi,a field experiment wa... In view of the problems of decreased unit yield,soil acidification,decreased soil organic matter and soil fertility caused by high generation single pure Eucalyptus plantation in southern Guangxi,a field experiment was conducted to study the yield,soil organic matter and soil fertility under six soil conditioning measures[interplanting Tephrosia candida under the forest,interplanting Sesbania cannabina under the forest,organic fertilizer application,residue to woodland,soil testing and formulated fertilization,and applying pure chemical fertilizer(CK)],and the enhancing effects of each treatment on the yield and soil improvement of Eucalyptus plantations were further comprehensively evaluated.The results showed that compared with the control,the five treatments could increase the average stock of Eucalyptus,among which the average stock under the treatment of interplanting T.candida under the forest was the highest,followed by soil testing and formulated fertilization.The soil organic matter content and soil fertility of the forest were significantly improved by interplanting green manure,organic fertilizer application and soil testing and formulated fertilization models,while the short-term(1 a)effect of the residue treatment on the improvement of soil organic matter and soil fertility was insignificant.During the actual production process,interplanting green manure and residue treatment were not effective due to the inoperability,and the applicability were not wide,which still needed further study.Therefore,organic manure application and soil testing and formulated fertilization were suitable choices to promote the improvement of productivity and soil quality of Eucalyptus plantation in Guangxi. 展开更多
关键词 Eucalyptus plantation Soil regulation measures Stand volume Soil fertility
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Pre-evaluation on stability of proposed expressway embankment with existing geothermal regulation measures in permafrost regions 被引量:2
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作者 LUO Xiao-xiao MA Qin-guo JIANG Hai-qiang 《Journal of Central South University》 SCIE EI CAS CSCD 2021年第1期264-283,共20页
Embankment stability is the primary problem for the expressway construction in permafrost regions.The proposed Qinghai-Tibet Expressway(QTE)is planned to construct along the Qinghai-Tibet Project Corridor.Confronted w... Embankment stability is the primary problem for the expressway construction in permafrost regions.The proposed Qinghai-Tibet Expressway(QTE)is planned to construct along the Qinghai-Tibet Project Corridor.Confronted with harsh environmental condition and intense heat exchange between earth and atmosphere,it is necessary to predict and evaluate the stability of the proposed QTE.In this study,the factors affecting the embankment stability are analyzed firstly.And then,a scheme for the stability evaluation of the embankment is established.Finally,the evaluation scheme is used for the pre-evaluation of the stability for the proposed QTE with different geothermal regulation measures(GRMs).The results indicate that the influencing factors include climatic environment,permafrost property,engineering condition and geological condition,and among them,engineering condition and permafrost property are the main influence factors for embankment stability.The stability of the proposed QTE varies greatly in the different geomorphological regions.The application effect and contribution to embankment stability of the existing GRMs are different,and using GRMs cannot completely overcome the influence of various factors on expressway stability.In the construction process,different GRMs should be adopted depending on the geomorphological environment where the embankment is located to ensure the embankment stability. 展开更多
关键词 PERMAFROST expressway embankment influencing factor stability evaluation geothermal regulation measures
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National Verification Regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2009
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《China Standardization》 2009年第4期69-69,共1页
关键词 JJG National Verification regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2009
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National Verification Regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2010(2010 No.131)
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《China Standardization》 2011年第1期80-80,共1页
General Administration of Quality Supervision,Inspection and Quarantine of P.R.China has approved the following 8 national measuring verification regulations in 2010 and publicize now.
关键词 National Verification regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2010 No.131
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Regulation of Ti(C,N)deposition on hot surface of refractory in blast furnace hearth
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作者 Jian Cao Cui Wang +2 位作者 Jjan-liang Zhang Ke-xin Jiao Guo-hua Zhang 《Journal of Iron and Steel Research International》 SCIE EI CAS CSCD 2024年第6期1423-1435,共13页
Ti(C,N)concentration was found to be lower on the hearth sidewall of a blast furnace and increased gradually toward the bottom of the blast furnace.The Ti(C,N)protective layer in a blast furnace is thin.Therefore,the ... Ti(C,N)concentration was found to be lower on the hearth sidewall of a blast furnace and increased gradually toward the bottom of the blast furnace.The Ti(C,N)protective layer in a blast furnace is thin.Therefore,the formation of a Ti(C,N)protective layer was promoted by studying the heterogeneous nucleation principle of titanium compounds on different substances and regulation measures for the deposition process of titanium compounds on refractories or impurities.The lattice disregistry between the titanium compounds and the main components in the refractory or the main impurities in the protective layer was calculated using a two-dimensional disregistry equation to study the heterogeneous nucleation principle of titanium compounds.The results revealed that in refractory materials,the heterogeneous nucleation of carbonitride is weak when C,SiO_(2),and Al_(2)O_(3) are used as heterogeneous nucleation substrates,and the heterogeneous nucleation of carbonitride is strong when TiO_(2) and SiC are used as heterogeneous nucleation substrates.As nucleation phases,TiC,TiN,Ti(C_(0.3),N_(0.7)),and Ti(C_(0.5),N_(0.5))have similar heterogeneous nucleation ability in single component refractory,and the type of carbonitride has little effect on the lattice disregistry.The impurities in the protective layer as the substrate phases are not conducive to the heterogeneous nucleation of carbonitride.When CaS was used as the substrate phase,the heterogeneous nucleation ability of carbonitride was the worst.Both carbon and alumina were not conducive to the heterogeneous nucleation of carbonitride,but carbon was more unfavourable than alumina. 展开更多
关键词 TI(C N) Lattice disregistry Lattice constant Heterogeneous nucleation regulation measure
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National Verification Regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2008 2008 NO.35
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《China Standardization》 2008年第6期63-63,共1页
General Administration of Quality Supervision,Inspection and Quarantine of P.R.China has approved the following 11 national measuring verification regulations in 2008 and publicize now.
关键词 National Verification regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2008 2008 NO.35 JJG NO
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National Verification Regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2008
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《China Standardization》 2008年第4期53-54,共2页
General Administration of Quality Supervision,Inspection and Quarantine of P.R.China hasapproved the following 24 national measuring verification regulations in 2008 and publicize now.
关键词 JJG National Verification regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2008
全文增补中
National Verification Regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2008 2008 No.22
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《China Standardization》 2008年第3期54-54,共1页
General Administration of Quality Supervision,Inspection and Quarantine of P.R.China has approved the following 10 national measuring verification regulations in 2008 and publicize now.
关键词 JJG National Verification regulations and Calibration Specifications of Measuring Instruments of P.R.China in 2008 2008 No.22
全文增补中
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