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首页> 外文期刊>土壤圈（英文版） >Impact of Some Agronomic Practices on Paddy Field Soil Health Under Varied Ecological Conditions:II.Influence of Soil Temperature
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Impact of Some Agronomic Practices on Paddy Field Soil Health Under Varied Ecological Conditions:II.Influence of Soil Temperature

机译：不同生态条件下几种农艺措施对稻田土壤健康的影响：II。土壤温度的影响

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摘要

A 21-d incubation experiment was conducted under controlled laboratory conditions to study the effects of elevated temperatures (10,25,and 40 ℃) on some microbiological and biochemical properties in flooded paddy soil amended or unamended with urea at 100 μg N g-1 soil and/or insecticide (triazophos) at field rate (FR).Enhancements in temperature led to increase the electron transport system (ETS)/dehydrogenase activity and phospholipid contents of the soil,while soil organic matter phenol and protein contents decreased with increasing temperature with or without the addition of inputs.An increase of temperature from 10 ℃ to 25 or 40 ℃ enhanced the ETS activity 2 folds (on average for all soils),while the inclusion of N and insecticide increased and decreased it,respectively,compared to the control.The soil phenol and protein contents were highly correlated with temperatures (for all soils,r = -0.936 and -0.971,respectively) and the additions of N and insecticide produced slight reductions and enhancements in them,respectively.At a particular temperature,the soil protein contents remained unaffected among all the soil treatments.An overall slight increase in phospholipid contents with N and a small decline with insecticide addition were noticed against the untreated soil.The toxicity of fertilizer and insecticide decreased as the incubation temperature increased,suggesting faster degradation of agrochemicals with raising temperature.
机译：在控制的实验室条件下进行了21天的温育实验，研究了高温（10、25和40℃）对100μgN g-1尿素改性或未改性的淹水稻田土壤某些微生物和生化特性的影响土壤和/或杀虫剂（三唑磷）以场速（FR）升高。温度的升高导致土壤中电子传递系统（ETS）/脱氢酶活性和磷脂含量的增加，而土壤有机质中酚和蛋白质的含量随温度的升高而降低温度从10℃升高到25或40℃可使ETS活性提高2倍（所有土壤平均），而氮和杀虫剂的添加分别使之增加和减少。土壤中的酚和蛋白质含量与温度高度相关（在所有土壤中，r分别为-0.936和-0.971），氮和杀虫剂的添加产生轻微的减少。在特定温度下，土壤蛋白含量在所有土壤处理中均不受影响。未处理的土壤中磷含量总体上随N略有增加，而杀虫剂添加量则略有下降。随着培养温度的升高，肥料和杀虫剂的含量下降，这表明农药的降解随着温度的升高而加快。

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  • 来源
    《土壤圈（英文版）》 |2001年第2期|143-150|共8页
  • 作者

  • 作者单位

    Natural Resources Science Department,College of Environmental and Resources Sciences,Zhejiang University,;

    Natural Resources Science Department,College of Environmental and Resources Sciences,Zhejiang University,;

    Natural Resources Science Department,College of Environmental and Resources Sciences,Zhejiang University,;

    Natural Resources Science Department,College of Environmental and Resources Sciences,Zhejiang University,;

    Natural Resources Science Department,College of Environmental and Resources Sciences,Zhejiang University,;

  • 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

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