苏打盐碱地水田的快速改良研究
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S156.2

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国家科技支撑计划(2013BAC09B01);省科技厅重大项目(2013204050SF)


Studies on Rapid Amendment of Soda Saline-Alkaline Paddy Fields
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    摘要:

    为了揭示不同改良措施对盐碱土改良培肥的影响效果,并筛选出较有效、快速的改良措施,本文研究了不同改良措施下土壤剖面速效养分含量、有机质含量、可溶性盐总量的分布特征及微团聚体、机械组成的变化,共设了如下4个处理:施用有机肥改良3年(T1)、施有机肥改良6年(T2)、单施Al2(SO4)3改良3年(T3)和有机肥与Al2(SO4)3混合施用改良3年(T4)。结果表明:不同的改良措施都使速效养分、有机质含量得到了快速提升,含盐量大幅降低,土壤结构明显改善。在0~10 cm土层中有机质含量互相之间存在显著性差异,T4处理最优,速效养分含量与其变化趋势基本一致,除速效磷外。各处理的可溶性盐总量整体的脱盐效果为T4>T3>T2>T1。从结构系数和分散系数来看,在表层土壤中T4处理明显优于其他处理。综合来看有机肥与硫酸铝混合施用的处理最优,达到了快速改良的目的。

    Abstract:

    In order to reveal the effect of different measures on improvement of the saline-alkali soil fertilityand select the effective and fast improving measures. The distribution of organic matter and absorbable nutrition con-tent, total soluble salts, the changes in micro-aggregates and mechanical composition under different amend mea-sures were studied in the paper. Four treatments were adopted, i.e., 3 year organic fertilizer amendment(T1), 6 yearorganic fertilizer amendment(T2), 3 year Al2(SO4)3amendment(T3), 3 year organic fertilizer add Al2(SO43 amendment(T4). Results showed that the organic matter and absorbable nutrition promoted rapidly, the content of salt decreasedand the physical of soil improved significantly in different amendments. The content of organic mater in 0~10 cmlayer was significant different among each treatments, and T4 treatment is the best. It is the same with absorbable nu-trition besides available P. The total desalting effect were T4>T3>T2> T1. From the structure coefficient and disper-sion, the T4 treatment was significantly better than others. Totally, organic fertilizer add Al2(SO43 was the best treat-ment to achieve a rapid amendment objective.

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周薇,王鸿斌,朴海淑,张唤.苏打盐碱地水田的快速改良研究[J].东北农业科学,2015,40(5):53-57.

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  • 收稿日期:2015-03-27
  • 在线发布日期: 2024-12-06
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