王农,陈学文,赵晓霞,时秀焕,张晓平,梁爱珍,贾淑霞

• 1:吉林省国土规划研究室
• 2:中国科学院东北地理与农业生态研究所
• 3:梨树县农业技术推广总站
• 4:农业部规划设计研究院

摘要(Abstract)：

利用最小限制水分范围(LLWR)来评价不同耕作方式(免耕和秋翻)对土壤密度的影响。结果表明,免耕(NT)较秋翻(MP)显著增加了5 cm~20 cm的土壤密度,计算LLWR的上限值和下限值分别由田间持水量和土壤硬度决定,NT和MP处理的LLWR值在0.155 cm3·cm-3~0.174 cm3·cm-3之间且表现出前者小于后者的规律性。LLWR与土壤密度呈极显著负相关,可以用来评价耕作方式对土壤密度的影响。

关键词(KeyWords)： 最小限制水分范围;免耕;秋翻;土壤密度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金项目(41201217,31170483,41101241);; 中国科学院知识创新工程重要方向项目(KZCX2-EW-QN307)资助

作者(Author): 王农,陈学文,赵晓霞,时秀焕,张晓平,梁爱珍,贾淑霞

参考文献(References)：

• [1]Logsdon S D,Karlen D L.Bulk density as a soil quality indicator during conversion to no-tillage[J].Soil and Tillage Research,2004,78(2),143-149.
• [2]杨学明,张晓平,方华军,等.北美保护性耕作及对中国的意义[J].应用生态学报,2004,15(2):335-340.
• [3]Da Silva A P,Kay B D,Perfect E.Characterization of the least limiting water range of soils[J].Soil Science Society of America Journal,1994,58(6):1775-1781.
• [4]Da Silva A P,Kay B D.Linking process capability analysis and least limiting water range for assessing soil physical quality[J].Soil and Tillage Research,2004,79(2),167-174.
• [5]Tormena C A,Da Silva A P,Libardi P L.Soil physical quality of a Brazilian Oxisol under two tillage systems using the least limiting water range approach[J].Soil and Tillage Research,1999,52(3-4):223-232.
• [6]Benjamin J G,Nielsen D C,Vigil M F.Quantifying effects of soil conditions on plant growth and crop production[J].Geoderma,2003,116(1-2),137-148.
• [7]Leao T P,Da Silva A P,Macedo M C M.Least limiting water range:a potential indicator of changes in near-surface soil physical quality after the conversion of Brazilian Savanna into pasture[J].Soil and Tillage Research,2006,88(1-2),279-285.
• [8]Zou C,Sands R,Buchan G,et al.Least limiting water range:a potential indicator of physical quality of forest soils[J].Australian Journal of Soil Research,2000,38(5),947-958.
• [9]Olibone D,Encide-Olibone A P,Rosolem C A.Least limiting water range and crop yields as affected by crop rotations and tillage[J].Soil Use and Management,2010,26(4):485-493.
• [10]Mbagwu J S C.Estimating dry-season crop water requirements from climatological and soil available water capacity data in the sedimentary and basement complex areas of Southern Nigeria[J].Catena,1985,12(2-3),201-209.
• [11]Da Silva A P,Kay B D.Estimating the least limiting water range of soils from properties and management[J].Soil Science Society of America Journal,1997,61(3):877-883.
• [12]中国土壤学会.土壤农业化学分析方法[M].北京:中国农业科技出版社,1999.
• [13]Haise H R,Haas H J,Jensen L R.Soil moisture studies of some great plain soils II.Field capacity as related to 1/3 atmosphere percentage,and“minimum point”as related to15-and 26-atmosphere percentage[J].Soil Science Society of America Journal,1955,19(1),20-25.
• [14]Richards L A,Weaver L R.Fifteen atmosphere percentage as related to the permanent wilting point[J].Soil Science,1943,56(5),331-340.
• [15]Taylor H M,Roberson G M,Jr Parker J J.Soil strength-root penetration relations for medium to coarse-textured soil materials[J].Soil Science,1966,102(1),18-22.
• [16]Grable A R,Siemer E G.Effects of bulk density,aggregate size,and soil water suction on oxygen diffusion,redox potential elongation of corn roots[J].Soil Science Society of America Journal,1968,32(2),180-186.
• [17]Wu L S,Feng G L,Letey J,et al.Soil management effects on the nonlimiting water range[J].Geoderma,2003,114(3-4),401-414.
• [18]Ferreras L A,Costa J L,Garcia F O,et al.Effect of no-tillage on some physical properties of a structural degraded Petrocalcic Paleudoll of the southen“Pampa”of Argentina[J].Soil and Tillage Research,2000,54(1-2),31-39.
• [19]Osunbitan J A,Oyedele D J,Adekalu K O.Tillage effects on bulk density,hydraulic conductivity and strength of a loamy sand soil in southwestern Nigeria[J].Soil and Tillage Research,2005,82(1),57-64.
• [20]Da Silva A P,Nadler A,Kay B D.Factors contributing to temporal stability in spatial patterns of water content in the tillage zone[J].Soil and Tillage Research,2001,58(3-4),207-218.
• [21]Lampurlanés J,Cantero-Martinez C.Soil bulk density and penetration resistance under different tillage and crop management systems and their relationship with barley root growth[J].Agronomy Journal,2003,95(3),526-536.