四种土壤中二甲甲烷和氟甲萘在受控条件下的降解

中国烟草科学 Pub Date : 2000-01-01 DOI:10.3381/0082-4623-44.1.35

J. Hermann, R. Hayes, T. Mueller

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引用次数: 1

摘要

摘要在控制环境条件下，研究了氟甲萘林和二甲萘林在土壤中的降解情况。研究了四种土壤(代表主要烟草产区)、两种温度(15°C和30°C)和两种土壤水分含量的全因子安排。此外，在存在另一种除草剂的情况下，研究了每种除草剂在0至180天内的持久性。土壤湿度对氟甲萘林和对二甲萘林的降解影响不大，但较高的温度促进了除草剂的降解。土壤类型对二甲甲烷降解的影响最大，土壤pH值和粘粒含量与二甲甲烷降解均呈负相关。这项研究表明，喷二甲基灵和氟甲基灵都有可能在环境中持续一段足以影响随后种植的小型粮食覆盖作物的时间间隔。氟甲萘在30℃下的半衰期均大于180 d。鉴于烟草中戊二甲基灵的使用模式，本研究表明……

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PENDIMETHALIN AND FLUMETRALIN DEGRADATION UNDER CONTROLLED CONDITIONS IN FOUR SOILS

Abstract Degradation of flumetralin and pendimethalin in soil was examined under controlled environmental conditions. A complete factorial arrangement of four soils (representing the major tobacco production regions), two temperatures (15 and 30°C), and two soil moisture contents were examined. Additionally, the persistence of each herbicide was examined alone and in the presence of the other herbicide from 0 to 180 d. Soil moisture had a minor effect on flumetralin and pendimethalin degradation, but higher temperature encouraged herbicide degradation. Soil type had a major influence, as pendimethalin degradation was negatively correlated to both soil pH and clay content. This research indicated that both pendimethalin and flumetralin have the potential to persist in the environment for a time interval sufficient to affect subsequently planted small grain cover crops. Flumetralin half-life at 30°C was >180 d in all four soils. Given the use pattern of pendimethalin in tobacco, this research indicated that...

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来源期刊

中国烟草科学烟草

自引率

0.00%

发文量

3722

期刊介绍： Chinese Tobacco Science is an academic scientific journal (bimonthly) under the supervision of the Ministry of Agriculture and Rural Affairs of the People's Republic of China, and sponsored by the Tobacco Research Institute of the Chinese Academy of Agricultural Sciences and the Qingzhou Tobacco Research Institute of China National Tobacco Corporation. It was founded in 1979 and is publicly distributed nationwide. The journal mainly publishes academic papers on scientific research results, new production technologies, and modern management in my country's tobacco science research and tobacco production technology. In addition, it also publishes forward-looking review articles in the field of tobacco research. There are columns such as tobacco genetics and breeding, cultivation technology, modulation and processing, physiology and biochemistry, plant protection, review or monograph, quality chemistry, etc.