期刊论文

中文

生态学报

1000-0933

2002

22

9

1440-1445

10.3321/j.issn:1000-0933.2002.09.011

国家自然科学基金资助项目 （批准号 :4980 1 0 1 3 ）；

本校为其他机构

为了探讨红壤性水稻土锰的迁移和转化行为 ,通过长达 1 6a的定位试验研究了不同稻作制、有机肥以及地下水位对土壤剖面中全锰、活性锰和交换态锰分布的影响。试验结果表明 ,长期淹水种稻引起 0～ 2 0 cm土壤层次全锰、活性锰和交换态锰含量的显著下降 ,而在 2 0～ 40 cm和 40～ 75 cm土层相对累积。不同稻作制比较 ,0～ 2 0 cm土层中全锰、活性锰和交换态锰含量以稻稻泡显著高于稻稻绿和稻稻油处理 ,而 2 0～ 40 cm和 40～ 75 cm土层 3种锰形态的含量各稻作制之间无显著差异 ,表明实行水旱轮作的稻稻绿与稻稻油两种稻作制耕层土壤锰的淋溶损失比持续淹水的稻稻泡制更为严重。相对而言 ,不同有机...

The chemical behavior of manganese (Mn) in paddy soils has been paid increasingly more attention since 1950's due to its nutritional and environmental effects under rotation of rice and upland crops or transition of upland to paddy soil. A long term experiment, conducted at Hunan Agricultural University since 1982, was used to evaluate the effects of rice based cropping system, amount of organic manure and groundwater level on distribution of several chemical fractions of Mn in the profile of paddy soil derived from arable red earth. The experi...