蚯蚓粪对海南甘蔗园砖红壤氮素矿化和硝化的影响

发布时间：2018-06-28 00:34

本文选题：蚯蚓粪 + 砖红壤　；参考：《浙江农业学报》2017年11期

【摘要】：为探讨蚯蚓粪对海南甘蔗园砖红壤氮素矿化和硝化的影响,采用室内培养试验,设置对照(CK)和4个蚯蚓粪添加水平的处理,研究培养过程中砖红壤p H值和总氮(TN)、NH~+_4-N、NO~-_3-N、矿质氮含量的动态变化,以及氮素的矿化和硝化特征。结果表明,经过52 d的培养试验,添加蚯蚓粪的4个处理砖红壤p H值较同期CK升高0.11~0.98个单位,NO~-_3-N和矿质氮含量分别为同期CK的1.67~6.09倍和1.21~2.83倍,NH~+_4-N含量较CK降低,砖红壤净矿化速率和净硝化速率分别是对照的1.47~5.13倍和2.23~8.16倍。表明施用蚯蚓粪可以促进海南甘蔗园砖红壤氮素的矿化和硝化作用。
[Abstract]:In order to study the effect of earthworm manure on nitrogen mineralization and nitrification in latosol in Hainan Sugarcane Orchard, the control (CK) and four earthworm manure supplementation levels were set up in laboratory culture experiment. The dynamic changes of P H value and total nitrogen (TN) NH ~ 4-N ~ 4-N ~ + -N ~ (-3-N), mineral nitrogen content, and the characteristics of mineralization and nitrification of nitrogen in latosol were studied. The results showed that compared with CK, the pH value of the four treatments with earthworm manure increased 0.110.98 units of NO-3-N and the contents of mineral nitrogen were 1.67 ~ 6.09 times and 1.21 ~ (2. 83) times of CK respectively, and the contents of NH ~ 4-N decreased compared with CK after 52 days' culture, and the results showed that the content of NH ~ 4-N in the four treatments was lower than that of CK, which was 1.67 ~ 6.09 times and 1.21 ~ (2. 83) times of CK, respectively. The net mineralization rate and nitrification rate of the latosol were 1.47 ~ 5.13 times and 2.23 ~ 8.16 times of those of the control, respectively. The results showed that the application of earthworm manure could promote the mineralization and nitrification of nitrogen in the latosol of Hainan sugarcane orchard.
【作者单位】：中国热带农业科学院环境与植物保护研究所;农业部儋州农业环境科学观测实验站;佛罗里达大学印第安河研究教育中心食品与农业研究所;埃及农业研究中心有机农业中心实验室;
【基金】：国家公益性行业(农业)科研专项(201503106) 海南省重点研发项目(ZDYF2016149) 国家外国专家局高端外国专家项目(GDW20154600260) 中国热带农业科学院基本科研业务费专项资金(1630042016004)
【分类号】：S153

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