Chemical and Microbiological Parameters of Paddy Soil Quality as Affected by Different Nutrient and Water Regimes

YANG Chang-Ming; YANG Lin-Zhang; YAN Ting-Mei

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Chemical and Microbiological Parameters of Paddy Soil Quality as Affected by Different Nutrient and Water Regimes

机译：不同养分和水分制度对稻田土壤化学和微生物参数的影响

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A field experiment was conducted from 1999 to 2002 to compare and evaluate the effects of nutrient and water regimes on paddy soil quality by investigating soil chemical and microbiological parameters. Four nutrient regimes, a control, chemical fertilizers only (CF), chemical fertilizers with swine manure (SM), and chemical fertilizers with wheat straw (WS), and two soil moisture regimes, continuous waterlogging (CWL) and alternate wetting and drying (AWD),were investigated. With SM and WS total organic carbon and total nitrogen in the paddy soil were significantly higher (P ＜0.05) than those with CF. A similar effect for organic amendments was observed in the soil light fraction organic C (LFOC), water-soluble carbohydrates (WSC), and water-soluble organic C (WSOC). CWL, in particular when swine manure was incorporated into the paddy soil, markedly decreased soil redox potential (Eh) and increased total active reducing substances (ARS). Meanwhile, as compared to CF, SM and WS significantly (P ＜ 0.05) increased soil microbial biomass C (MBC) and mineralizable carbon, with differences in AWD being higher than CWL. In addition, SM and WS treatments significantly (P ＜ 0.05) improved rice above-ground biomass and grain yield, with AWD being greater than CWL. Thus, for ecologically sustainable agricultural management of paddy soils, long-term waterlogging should be avoided when organic manure was incorporated into paddy soil.

机译：通过调查土壤化学和微生物参数，从1999年至2002年进行了田间试验，以比较和评估养分和水分状况对稻田土壤质量的影响。四种养分制度，一种控制措施，仅使用化学肥料（CF），使用猪粪的化学肥料（SM）和使用小麦秸秆的化学肥料（WS），以及两种土壤湿度方案，连续浸水（CWL）和交替的湿润和干燥（ AWD），进行了调查。施用SM和WS的稻田土壤中的总有机碳和总氮均显着高于施用CF的土壤（P ＜0.05）。在土壤中的轻度有机碳（LFOC），水溶性碳水化合物（WSC）和水溶性有机碳（WSOC）中也观察到了类似的有机修饰作用。 CWL，特别是将猪粪掺入稻田土壤中时，土壤氧化还原电位（Eh）明显降低，总活性还原物质（ARS）增加。同时，与CF，SM和WS相比，SM和WS显着增加了土壤微生物生物量C（MBC）和可矿化碳，AWD的差异高于CWL。此外，SM和WS处理显着（P ＜0.05）可改善水稻地上生物量和谷物产量，其中AWD大于CWL。因此，为了在稻田土壤上实现生态可持续的农业管理，在将有机肥料掺入稻田土壤时，应避免长期涝渍。

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来源
《土壤圈（英文版）》 |2005年第3期|369-378|共10页
作者
YANG Chang-Ming; YANG Lin-Zhang; YAN Ting-Mei;
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作者单位

Institute of Soil Science, Chinese Academy of Sciences, P. O. Box 821, Nanjing 210008 China;

State Key Lab. of Pollution Control and Resource Reuse, College of Environmental Science and Engineering, Tongji University, Shanghai 200092 China;

Institute of Soil Science, Chinese Academy of Sciences, P. O. Box 821, Nanjing 210008 China;

Institute of Soil Science, Chinese Academy of Sciences, P. O. Box 821, Nanjing 210008 China;

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收录信息中国科学引文数据库(CSCD);中国科技论文与引文数据库(CSTPCD);
原文格式 PDF
正文语种 chi
中图分类土壤学;
关键词
biological index of fertility; nutrient regimes; paddy soil quality; water regimes;

机译：生育力的生物指标;养分状况;稻田土壤质量;水分状况;

Chemical and Microbiological Parameters of Paddy Soil Quality as Affected by Different Nutrient and Water Regimes

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