环境工程外文资料翻译--耕作方式与氮肥用量对土壤中有机物和氮的百分含量的影响-环境工程(编辑修改稿)

环境工程外文资料翻译--耕作方式与氮肥用量对土壤中有机物和氮的百分含量的影响-环境工程(编辑修改稿)内容摘要：

___ Organic matter content (%) Nitrogen content (%) Depth of soil Depth of soil Treatment 010 cm 1020 cm 2030 cm 010 cm 1020 cm 2030 cm ______________________________________________________________________________ Tillage practices T0 T1 T2 CV (%) Nitrogen rates 济南大学毕业 论文外文资料翻译 4 N0 N1 N2 N3 CV (%) ______________________________________________________________________________ In a column, means having similar letter (s) do not differ significantly at 5% level of probability. T0 = no tillage, T1= tillage unto 10 cm and T2= tillage upto 20 cm depth. N0= no nitrogen, N1= 35 kg N ha1, N2= 70 kg N ha1and N3=105 kg N ha1 Table 2: Interaction effect of tillage practices and nitrogen rates on the organic matter (%) and N (%) content in soil ______________________________________________________________________________ Organic matter content (%) Nitrogen content (%) Depth of soil Depth of soil Treatment binations 010 cm 1020 cm 2030 cm 010 cm 1020 cm 2030 cm ______________________________________________________________________________ T0N0 T0N1 T0N2 T0N3 T1N0 T1N1 T1N2 T1N3 T2N0 T2N1 济南大学毕业 论文外文资料翻译 5 T2N2 T3N3 CV (%) ______________________________________________________________________________ In a column, means having similar letter (s) do not differ significantly at 5% level of probability. REFERENCES Agenbag, . and . Maree, 1989. The effect of tillage on soil carbon, nitrogen and soil strength of simulated surface crusts in two cropping systems for wheat (Triticum aestivum). Soil and Tillage Res., 14: 5365. Bhuiyan, ., 1988. Coordinated project on potassium report. Progress report (198788) BARI, Joydebpur, Gazipur, pp: 145. Black, C. A., 1965. Methods of soil analysis, Part I and II. Amer Soc. Inc. Pub. Madison, Wisconsin, U. S. A. pp: 770. Boyle, M., . Frankenberger and . Stolzy, 1989. The influence of organic matter on soil aggregation and water infiltration. J. Production Agril., 2: 290299. Chowdhury, ., 1992. To study the physical and chemical properties of two AEZ of Bangladesh under three cropping pattens. . Thesis, BAU, Mymensingh. Bangladesh, pp: 195. Gill, K. S., T. S. Sandhu and N. N. Sekhor, 1978. Green manure paddy fields for higher production. India Fmg., 28: 19. Jackson, M. L., 1973. Nitrogen determination for soils and plant tissue. Soil chemical analysis. Prenticc Hall. India Private Limited. Piper, ., 1950. Soil and plant analysis. Ade。