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1.
BOOK REVIEWS     
《Soil Use and Management》1996,12(2):106-106
Book Review in this Articles
Soil Conservation (Third Edition) By N. Hudson.
Conserving soil resources: European perspectives. Selected papers from the First International Congress of the European Society for Soil Conservation Edited by R.J. Rickson.
Soil and water management systems, 4th edition By G.O. Schwab, D.D. Fangmeier & W.J. Elliot.  相似文献   

2.
BOOK REVIEWS     
《Soil Use and Management》1995,11(3):155-155
Book Reviewed in this article:
Flame Spectrometry in Environmental Chemical Analysis: a practical guide By Malcolm S. Cresser.
Soil compaction i n crop production Edited by B.D. Soane and C. van Ouerkerk.  相似文献   

3.
BOOK REVIEWS     
Book Reviewed in this article:
Soils and the Environment By Alan Wild.
Nitrate. Processes, Patterns and Management Edited by T.P. Hurt, A.L. Heathwaite and S.T. Trudgill.
Urban Soil and Landscape Design By P.J. Craul.
B ullock , P. & G regory , P. J. 1991. Soils in the urban environment.  相似文献   

4.
BOOK REVIEWS     
《Soil Use and Management》1995,11(2):103-104
Book reviews in this article:
Soil science and sustainable land management in the tropics Edited by J.K. Syers & D.L. Rimmer.
Long term experiments in agriculture and ecological sciences Edited by R.A. Leigh & A.E. Johnston.  相似文献   

5.
BOOK REVIEWS     
Book reviews in this article:
Soils and Environment By S. Ellis & A. Mellor.
Soil Erosion Research Methods Edited by R. Lal.
Agriculture and Environment: Bridging Food Production and Environmental Protection in Developing Countries Edited by Anthony S.R. Juo and Russell D. Freed.
Soil Management in Sustainable Agriculture Edited by H.F. Cook and H.C. Lee.
Soil Nutrient Bioavailability—2nd Edition By Stanley A. Barber.
Soil fertility decline under sisal cultivation in Tanzania By Alfred E. Hartemink.  相似文献   

6.
BOOK REVIEWS     
Book Reviewed in this article:
Estimating fertilizer requirements: a quantitative approach By J. D. Colwell.
Soil Science: methods and application By David I. Rowell.  相似文献   

7.
BOOK REVIEWS     
World Map of the Status of Human-Induced Soil Degradation. Global Assessment of Soil Degradation (GLASOD) By L.R. Oldeman, R.T.A. Hakkeling & W.G. Sombroek
Evaluation of Land Resources in Scotland Edited by J.S. Bibby & M.F. Thomas.  相似文献   

8.
BOOK REVIEW     
《Soil Use and Management》2000,16(4):295-295
Book reviewed in this articles:
SOILpak for dryland farmers on the red soil of Central Western NSW 1999 . Edited by A.N. Anderson, D.C. McKenzie & J.J. Friend.  相似文献   

9.
BOOK REVIEWS     
Book reviews in this article:
Soil organic matter dynamics and sustainability of tropical agriculture . Edited by K. Mulongoy & R. Merckx.
World soil erosion and conservation Edited by D. Pimental.
Fundamentals of soil behaviour (2nd edition) By James K. Mitchell.  相似文献   

10.
BOOK REVIEWS     
《Soil Use and Management》2000,16(3):236-236
Book reviewed in this articles:
Agriculture, Fertilizers and the Environment . Edited by M. Lægreid, O. C. Bøckman and O. Kaarstad.
Ramiran 98. Proceedings of the 8th International Conference of the FAO European System of Co-operative Research Networks in Agriculture (ESCORNENA) on Management Strategies for Organic Waste Use in Agriculture . Edited by J. Martinéz & M.-N. Maudet.  相似文献   

11.
Abstract. The production of CO2 in the field and the contribution of carbon from crops to the soil were evaluated for the double crop wheat-soyabean rotation on a typical soil of the Rolling Pampa to assess the effects of two tillage systems, mouldboard ploughing and shallow discing, on the soil carbon balance. Microbial biomass and respiration under controlled conditions were also determined.
No differences in soil microbial biomass contents were detected between tillage systems after two years, but the biological activity of incubated soils and the mineralized fraction of organic carbon were greater ( P = 0.05) at the 0–5 cm depth in disc tillage. This suggested an increase in the labile fraction of organic matter in that layer, though the total carbon content of the soil did not vary significantly.
Soil moisture was not a limiting factor at any time of the year and production of CO2 in the field was regulated by temperature ( r > 0.89, P = 0.01). There were no differences between tillage systems in the emission of CO2 to the atmosphere, which was estimated at 11.6 t C/ha/yr. The contribution in dry matter from the crops ranged from 15.3 to 17.0 t/ha/yr, and the carbon input was approximately 7.0 t/ha/yr. Consequently, the soil lost carbon with the wheat—soyabean rotation but tillage systems did not affect carbon inputs and losses from the agrosystem.  相似文献   

12.
BOOK REVIEW     
Book reviewed in this article:
Gaseous Nitrogen Emissions from Grasslands Edited by S.C. Jarvis & B.F. Pain.  相似文献   

13.
BOOK REVIEWS     
Book reviewed in this article.
Heavy Metals in Soils Editor B.J. Alloway.
F.A.O. Soils Bulletin 61: Radioactive fallout in soils, crops and food By F.P.W. Winteringham.
Dynamics of soil organic matter in tropical ecosystems Edited by D.C. Coleman, J.M. Oades and G. Uehara.
Agroforestry for soil conservation By A. Young.  相似文献   

14.
Abstract. Topsoil (0–15 cm) bulk density, aggregate stability, soil dispersibility, water retention and infiltration were measured between 1989 and 1996 on an Alfisol under rehabilitation in southwestern Nigeria. The planted leguminous species were Pueraria phaseoloides, Senna siamea, Leucaena leucocephala, Acacia leptocarpa and A. auriculiformis. Also, plots with natural fallow and maize/cassava intercropping were included. Level (minimum) and mound tillage with hoes was adopted for the cultivated areas under study after 4 and 6 year fallow periods. Under fallow, the soil bulk density decreased from1.56 to 1.11 t m73.The continuously cropped treatment (level tillage) had significantly higher bulk density than the fallowed subplots after 6 years. Mean soil penetrometer resistance ranged from 75 to 157 kPa for fallowed plots and from 192 to 295 kPa for the continuously cropped (level tillage) subplot. Surface soilwater contentswere similar for all the treatments during the soil strength measurements. Although soil aggregates were generally of low stability and not well formed, they were improved by fallowing.
Soil structural improvement by planted fallows was similar to that by natural fallow, but the trees were more promising for long-term fallow (>6 years) than the herbaceous P. phaseoloides. However, the improvement in soil structure after 4 or 6 year fallow could not be maintained in subsequent cropping. Furthermore, the significant improvement in soil bulk density caused by A. auriculiformis and natural fallow was more rapidly lost on the cultivated subplots compared with other fallow treatments. Thus, soil structure recovery under a fallow does not imply a sustained improvement when stress is applied to this soil. Post-fallow soil management options such as residue incorporation and tillage to ameliorate compaction or soil strength will be necessary to enhance the improvements by fallow species.  相似文献   

15.
BOOK REVIEW     
《Soil Use and Management》1998,14(3):154-154
Book reviewed in this articles:
Biological indicators of soil health . Edited by C.E. Pankhurst, B.M. Doube & V.V.S.R. Gupta.  相似文献   

16.
BOOK REVIEW     
《Soil Use and Management》1997,13(4):224-224
Book Reviewed in this article:
Phosphorus loss from soil to water : Edited by H. Tunney, O. T. Carton, P. C.  相似文献   

17.
Abstract. The effect of various cultivation sequences on the performance of field drainage systems was investigated in a number of case studies carried out on former opencast coal mining land. Comparisons of drain flow patterns before and after cultivation indicated marked deteriorations in performance following preparation of the final seedbed. Neither mouldboard ploughing nor discing alone affected drain flow.
Soil moisture, hydraulic conductivity and drain flow data suggested that drainage performance may have deteriorated as a result, initially, of secondary drainage channels being blocked with fine materials translocated from the seedbed. A subsequent collapse of tilth to form a surface pan reinforced this adverse effect. It was not clear to what extent the failure of secondary drainage channels contributed to this collapse.
Implications for the management of former opencast land and the advantages of various cultivation techniques are discussed.  相似文献   

18.
The relative importance of soil bulk density, water content and potential on the self-diffusion and impedance factors of 36C1 in a sandy loam and loamy clay were studied. The soil bulk densities used represented a range of conditions from freshly tilled seedbeds to compacted soils. The volumetric water contents and pF were the main factors controlling the soil impedance factors, with bulk density making a small but significant contribution.
Soil type affects the impedance factors through differences in anion exclusion volumes, the water contents of poorly connected pores that contribute little to the diffusion process, and tortuosity of the diffusion pathways.  相似文献   

19.
Abstract. Sugarcane yields in the Herbert Valley in North Queensland have been declining over the past 15 years. Better yields are obtained where crops are grown on previously unused land. Soils under cane are more compacted, more acid, contain less organic matter and are lower in cation exchange capacity and exchangeable cations. These differences reflect soil degradation caused by intensive cultivation.
Contributing factors to the degradation of soils include soil compaction and structural breakdown occurring during harvest and cultivation operations, losses of organic matter due to burning of crop residues and acidification of soils due to large applications of nitrogen fertilizers.
Soil management practices should aim to increase soil organic matter levels, provide a more favourable biological environment, reduce physical damage to soils during harvesting and cultivation, reduce soil acidity and improve the effectiveness of fertilizing practices.  相似文献   

20.
Abstract. Results of recent research on moisture regimes of surface water soils and on soil credibility are summarized, and proposals are made for the use of results in soil evaluation for selected crops.
Measurements of water table depth show high variability from year to year and during the same season. Soil moisture regimes seem to affect soil management more than crop yield. A probabilistic calendar is needed for the occurrence of topsoil moisture content near the lower plastic limit in periods corresponding to the most important management practices. This is required in order to assess important soil qualities like workability and trafficability.
Soil erosion is greatest when superficial run-off can create rills. This happens when run-off shear stresses exceed a threshold proportional to soil shear strength. Consequently, soil shear strength can be used as a measure of soil resistance to erosion. Probabilistic calendars are needed on the occurrence of heavy rainstorms able to create rills when the soil is most at risk.
Entries for ratings of workability, trafficability and erosion risk are outlined.  相似文献   

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