[1] Anthony MW, Graeme JB, et al. 2000. Managing legume leys,residues and fertilizers to enhance the sustainability of wheat yields and nutrient balance 1. The effects on wheat yields and nutrient balances. Soil Till Res, 54:63~75 [2] Anthony MW, Graeme JB, et al. 2000. Managing legume leys,residues and fertilizers to enhance the sustainability of wheat yields and nutrient balance 2. Soil physical fertility and carbon. Soil Till Res, 54:77~89 [3] Benediktas J, Genovaite J. 2002. Erosion-preventive crop rotations for landscape ecological stability in upland regions of Lithuania. Agric Ecosyst Environ, 95:1~14 [4] Bruulsema TW, Christie BR. 1987. Nitrogen contribution to succeeding corn from alfalfa and red clover. Agron J, 79:96~100 [5] Dang T-H(党廷辉).1998.Influence of crop rotation on soil fertility in arid-highland of Loess Plateau.J Soil Erosion Soil Water Cons(土壤侵蚀与水土保持学报),4(3):44~47(in Chinese) [6] Galantini JA, Landriscini MR, Iglesias JO, et al. 2000. The effects of crop rotation and fertilization on wheat productivity in the Pampean semiarid region of Argentina 2. Nutrient balance, yield and grain quality. Soil Till Res, 53:137~144 [7] Hesterman OB, Sheaffer CC, Barnes DK, et al. 1986. Alfalfa dry matter and nitrogen production, and fertilizer nitrogen response in legume-corn rotations. Agron J, 78:19~23 [8] Hobbs JA. 1987. Yields and protein contents of crop in various rotations. Agron J, 79:832~836 [9] Holford ICR, Crocker GJ. 1997. A comparison of chickpeas and pasture legumes for sustaining yiels and nitrogen status of subsequent wheat. Aust J Agric Res, 48:305~315 [10] Holford ICR, Schweitzer BE, Crocker GJ. 1998. Comparative effects of subterranean clover, medic, lucerne, and chickpea in wheat rotations, on nitrogen, organic carbon, and moisture in two contrasting soils. Aust J Soil Res, 36:57~72 [11] Karunatilake UP, van Es HM. 2002. Rainfall and tillage effects on soil structure after alfalfa conversion to maize on a clay loam soil in New York. Soil Till Res, 67:135~146 [12] Latta RA, Cocks PS, Matthews C. 2002. Lucerne pastures to sustain agricultural production in southwestern Australia. Agric Water Man, 53:99~109 [13] Li FR, Gao CY, Zhao HL, et al. 2002. Soil conservation effectiveness and energy efficiency of alternative rotations and continuous wheat cropping in the Loess Plateau of northwest China. Agric Ecosys Environ, 91:101~111 [14] Li F-M(李凤民),Xu J-Z(徐进章),Sun G-J(孙国钧).2003.Restoration of degraded ecosystems and development of water harvesting ecological agriculture in the semiarid Loess Plateau of China.Acta Ecol Sin(生态学报),23(9):1901~1909(in Chinese) [15] Li S-Q(李世清),Li S-X(李生秀).2000.Leaching loss of nitrate from semiarid area agroecosystem.Chin J Appl Ecol(应用生态学报),11(2):240~243(in Chinese) [16] Liu X-H(刘晓宏),Hao M-D(郝明德).2001.Effects of long-term plant Medicago sativa L.on soil nitrogen nutrients.Chin J Eco-Agric(中国生态农业学报),9(2):82~84(in Chinese) [17] MaCallum MH, Peoples MB, Connor DJ. 2000. Contributions of nitrogen by field pea(Pisum sativum L.) in a continuous cropping sequence compared with a Lucerne (Medicago sativa L.)-based pasture ley in the Victorian Wimmera. Aust J Agric Res, 51:13~22 [18] Miglierina AM, Iglesias JO, Landriscini MR, et al. 2000. The effects of crop rotation and fertilization on wheat productivity in the Pampean semiarid region of Argentina 1. Soil physical and chemical properties. Soil Till Res, 53:129~135 [19] Shun L(山仑). 1988. Discussion on establishment of a good Agroecological model in the loess upland. Bull Soil Water Cons(水土保持通报)(1):1~7(in Chinese) [20] Shan L(山仑),Liu Z-M(刘忠民),Xin Y-Q(辛业权),et al.1992. A study on the grass and field crops rotation in Mountain region of Southern Ningxia 1. The production and benefit of different rotation system.J Soil Water Cons(水土保持学报),6(4):60~68(in Chinese) [21] Stevenson FJ. 1982. Nitrogen in Agriculture Soils. Madison:Am Soc Agron, Inc.; Crop Sci Soc Am, Inc.; Soil Sci Soc Am Inc. [22] Sun J-H(孙建华),Wang Y-R(王彦荣).2004.Yield characteristics and genetic diversity of main alfalfa varieties in China.Chin J Appll Ecol(应用生态学报),15(5):803~808(in Chinese) [23] Wang Q-S(王庆锁),Su J-K(苏加楷),Zhang Y-F(张永亭),et al.1999.Reviews on alfalfa-crop rotations.Eco-Agric Res(生态农业研究),7(3):35~38(in Chinese) [24] Wu D-L(吴敦亮)、1989.Study of grassland development infarmland.Pratacul Sci(草业科学),6(4):41~44(in Chinese) [25] Xie L-H(谢林花),Lu J-L(吕家珑),Zhang Y-P(张一平),et al.2004. Influence of long term fertilization on phosphorus fertility of calcareous soil I. Organic matter, total phosphorus and available phosphorus.Chin J Appl Ecol(应用生态学报),15(5):787~789(in CHinese) [26] Yang J-C(杨景成),Han X-G(韩兴国),Huang J-H(黄建辉),et al. 2003. Effects of land use change on carbon storage in terrestrial ecosystem.Chin J Appl Ecol(应用生态学报),14(8):1385~1390(in Chinese) [27] Yang XM, Kay BD. 2001. Rotation and tillage effects on soil organic carbon sequestration in a typic Hapludalf in Southern Ontario.Soil Till Res, 59:107~114 [28] Zhang S-H (张少华). 1997. Discussion of approach and aspect of grassland use in Loess Plateau of Longdong Region. Pratacul Sci(草业科学),14(5):4~7(in Chinese) [29] Zhu X-M(朱显谟).1989.Soil and Agriculture of Loess Plateau.Beijing:Agricultural Press. (in Chinese) |