石灰性紫色土渍水氧化还原状况的研究
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国家自然科学基金


STUDY ON REDOXIC PEATURES OF CLACAREOUSPURPLE SOILS AFTER WATERLOGGING
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    摘要:

    本文通过模拟培育试验,研究了石灰性紫色土渍水状态下氧化还原特征。结果表明,石灰性紫色土与普通紫色土、不饱和紫色土相比,不易向强还原状况发育,这与其富含碳酸钙和低量的活性铁有关;不同种类有机物料对其还原程度的影响是不同的;表征土壤氧化还原过程的强度因素Eh和数量因素还原性物质含量有很好的相关性,并与水稻的生长状况相一致。当土壤Eh小于-100mV,还原物总量大于3.63cmol(+)/kg时,土壤极易发育为强还原状况,并危害水稻的生长。

    Abstract:

    The present paper deals with a study on redoxic features of calcareous purple soils after waterlogging through a simulated incubation test. The results show that (1)as compared with haplie purple soils and dystric purple soils, calcareous purple soils were difficult to develop strong reduction status, which was related to the contents of CaCO3 and active iron of soils (2) the different organic substances had different influences on soil reduction intensity and (3) the intensity factor (redox potential) was highly correlated with the amount factor (content of reducing materials) and was consistent with the growth status of rice. When Eh<-100mV and the total amount of reducing substances>3.63cmol/kg, soils were easy to develop strong reduction ststus, which would poison the rice growine.

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徐建忠,唐时嘉.石灰性紫色土渍水氧化还原状况的研究[J].土壤学报,1994,31(2):119-129. Xu Jianzhong, Tang Shijia. STUDY ON REDOXIC PEATURES OF CLACAREOUSPURPLE SOILS AFTER WATERLOGGING[J]. Acta Pedologica Sinica,1994,31(2):119-129.

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  • 在线发布日期: 2013-02-25
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