| 长期施肥对紫色土土壤微形态特征的影响(英文) |
| |
| 引用本文： | 秦鱼生,涂仕华,冯文强,陈琨,樊红柱.长期施肥对紫色土土壤微形态特征的影响(英文)[J].农业科学与技术,2012(5):1050-1054. |
| |
| 作者姓名： | 秦鱼生 涂仕华 冯文强 陈琨 樊红柱 |
| |
| 作者单位： | 四川省农业科学院土壤肥料研究所 |
| |
| 基金项目： | Supported by Special Fund for Agro-scientific Research in the Public Interest(201003016);Special Fund for Excellent Paper of Sichuan Academy of Agricultural Sciences (2010LWJJ-007)~~ |
| |
| 摘 要： | 目的]通过对紫色土长期定位施肥下不同施肥处理 0~20 cm 耕层土壤微形态特征变化的研究,探讨施肥对紫色土微形态的影响。方法]试验采用随机区组设计,共设 8 个不同施肥处理。用单偏光显微镜对不同处理的 0~20 cm 耕层土壤微形态进行观察与分析。结果]长期不施肥料的 CK 处理,土壤耕层结构致密,很少有孔隙发育,土壤微结构为结构较差的碎屑聚积状-沙粒聚积状;长期单施化学肥料,土壤颗粒未形成结构体,少孔隙,土壤微结构主要为斑晶胶凝状-细沙粒聚积状结构,土壤结构比 CK 处理优;长期施用有机肥或有机无机肥料配施的处理,土壤粗颗粒数量显著增加,结构疏松,孔隙量大,动、植物残体丰富,有铁锰结核和腐殖质的形成和微团聚体的发育,土壤微结构类型以 MNPK 处理(有机肥+氮肥+磷肥+钾肥)最好,为胶凝紧实状-多孔状结构。结论]有机无机肥料配施能显著改良紫色土的结构,培肥土壤,实现土壤可持续发展。
|
| 关 键 词： | 长期定位施肥 紫色土 微形态 微结构 |
Effects of Long-term Fertilization on Micro-morphological Features in Purple Soil |
| |
| Yusheng QIN,Shihua TU,Wenqiang FENG,Kun CHEN,Hongzhu FAN.Effects of Long-term Fertilization on Micro-morphological Features in Purple Soil[J].Agricultural Science ＆ Technology,2012(5):1050-1054. |
| |
| Authors: | Yusheng QIN Shihua TU Wenqiang FENG Kun CHEN Hongzhu FAN |
| |
| Institution: | Soil and Fertilizer Institute,Sichuan Academy of Agricultural Sciences,Chengdu 610066,China |
| |
| Abstract: | Objective] The study aimed to better understand the effect of different fertilizer treatments on micro-morphological characteristics of a purple soil at the 0-20 cm topsoil in a long-term fertilizer experiment.Method] Soil micro-morphology was observed and analyzed under a single polarizing microscope.Result] For the CK(no fertilizer) treatment,soil structure was dense with little porosity developed.Its soil microstructure was poor,sandy fabric-granular fabric.After continuously applied chemical fertilizers only for more than two decades,the soil particles did not evolve into soil structures and formed little porosity.The microstructures of soil in N,NP and NPK treatments were porphyroskelic fabric-fine sandy granular fabric,better than that of the soil in CK treatment.Adding manure obviously improved the quantity of groundmass and endowed the soil a loose structure and plenty porosity,enriched animal and plant residues,and well-formed iron-manganese nodules and humus materials,all resulting in better micro-aggregates development.The type of soil microstructures in MNPK treatment was pectized-compacted takyric fabric-intertextic fabric,the best among all the treatments.Conclusion] Combined application of both organic and inorganic fertilizers can significantly improve the structure of the purple soil,enhance soil fertility and achieve soil sustainable development. |
| |
| Keywords: | Long-term fertilization Purple soil Microstructure Micro-morphology |
| 本文献已被 CNKI 等数据库收录！ |
|
