Soil changes following long-term cultivation of pulses
Soil changes following long-term cultivation of pulses
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DOI：
10.1017/s0021859609990104
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发表时间：
2009-12-01
影响因子：
2
通讯作者：
Ganeshamurthy, A. N.
中科院分区：
文献类型：
--
作者：
Ganeshamurthy, A. N.
以新成土为研究对象，通过与连续非脉冲作物和未耕作土壤的比较，了解连续脉冲耕作对土壤化学、物理和生物学性质的影响。一个典型的Ustochrept，从相同的母质，从16岁的脉冲种植领域，非脉冲作物领域和未开垦的休闲领域在一个位置与均匀的地形土壤进行了分析，使用多相结合的方法，传统的土壤物理和化学分析，培养依赖和独立的微生物分析和酶分析。在土壤物理性质中，只有土壤团聚体稳定性和土壤紧实度比非豆类作物有显著改善。与未耕种的休耕相比，豆类作物种植后的土壤pH值约低1个单位，而非豆类作物种植则降低了0.36。对区分脉冲效应和非脉冲效应影响最大的化学和生物学变量是有机碳（C）、微生物量C、氮（N）和生物量茚三酮-N，其次是与氮循环相关的变量：硝酸盐（NO3-N）、有机质和可溶性总氮。豆类作物种植后土壤酶活性显著高于非豆类作物种植或未耕种休闲地。豆类作物种植领域的土壤质量似乎是显着不同的非豆类作物领域和未开垦休耕的所有变量的研究。
Studies were conducted on Entisols to understand the effects of continuous pulse cultivation on soil chemical, physical and biological properties by comparing with continuous non-pulse crops and uncultivated soils. Soils of a Typic Ustochrept, developed from the same parent material, from 16-year-old pulse cultivation fields, non-pulse crop fields and uncultivated fallow fields in a location with uniform topography were analysed using a polyphasic approach combining traditional soil physical and chemical analysis, culture-dependent and independent microbiological analysis and enzymatic analysis. Among the soil physical properties, only soil aggregate stability and soil compaction showed significant improvement in soils tinder pulses than non-pulse crops. Compared to uncultivated fallows, the soil pH after pulse cultivation was about 1 unit lower while non-pulse crop cultivation reduced it by 0.36. The chemical and biological variables that contribute most to the discrimination of the pulses effect and non-pulse crops effect on soil quality are organic carbon (C), microbial biomass C, nitrogen (N) and biomass ninhydrin-N, and secondary variables related to N cycle;nitrate (NO3-N), organic and total soluble N. The enzyme activities were significantly higher in soils after pulse cultivation than after non-pulse crops or uncultivated fallow. The soil quality of pulse cultivation fields seems to be markedly different to that of non-pulse crop fields and uncultivated fallows in terms of all the variables studied.