1.新疆师范大学地理科学与旅游学院,新疆 乌鲁木齐 830054
2.新疆维吾尔自治区重点实验室/新疆干旱区湖泊环境与资源实验室,新疆 乌鲁木齐 830054
3.中国科学院地理科学与资源研究所,北京 100101
4.中国科学院大学资源与环境学院,北京 100190
石轩(1996年生),男;研究方向:干旱区资源开发与规划;E-mail:752731121@qq.com
李艳红(1977年生),女;研究方向:干旱区湖泊湿地生态恢复技术;E-mail:lyh0704@126.com
纸质出版日期:2021-11-25,
网络出版日期:2021-01-14,
收稿日期:2020-07-29,
录用日期:2020-08-24
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石轩,李艳红,李发东.玛纳斯河流域不同灌区棉田土壤铵态氮和硝态氮变化特征及影响因素[J].中山大学学报(自然科学版),2021,60(06):80-90.
SHI Xuan,LI Yanhong,LI Fadong.Variation characteristics and influencing factors of soil ammonium nitrogen and nitrate nitrogen in cotton fields in different irrigation districts of Manas river basin[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(06):80-90.
石轩,李艳红,李发东.玛纳斯河流域不同灌区棉田土壤铵态氮和硝态氮变化特征及影响因素[J].中山大学学报(自然科学版),2021,60(06):80-90. DOI: 10.13471/j.cnki.acta.snus.2020.07.29.2020D032.
SHI Xuan,LI Yanhong,LI Fadong.Variation characteristics and influencing factors of soil ammonium nitrogen and nitrate nitrogen in cotton fields in different irrigation districts of Manas river basin[J].Acta Scientiarum Naturalium Universitatis Sunyatseni,2021,60(06):80-90. DOI: 10.13471/j.cnki.acta.snus.2020.07.29.2020D032.
为研究玛纳斯河流域不同灌区棉田土壤铵态氮和硝态氮(
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-N)的季节变化规律及其影响因素,2019年5月、8月、10月以玛纳斯河流域6大灌区为研究对象,对不同月份土壤铵态氮和硝态氮及理化性质,土壤环境以及施氮量,开发年限等因子进行了分析。结果表明:(1)各灌区土壤因子的差异使铵态氮和硝态氮含量有明显的变化,呈现出下野地灌区>莫索湾灌区>安集海灌区>新湖总场灌区>金沟河灌区>石河子灌区。不同灌区土壤铵态氮和硝态氮都具有明显的季节性变化,铵态氮变化为8月>5月>10月,硝态氮变化为8月>10月>5月。不同灌区土壤铵态氮和硝态氮在不同月份均聚集在土壤表层,随着土层深度的增加逐渐减少。(2)各灌区土壤铵态氮和pH值呈显著负相关,和全盐呈正相关,且在5月和8月份时与含水量正相关;硝态氮含量在各月与土壤含水量和全盐呈正相关,和土壤温度呈负相关。(3)各灌区土壤铵态氮和硝态氮受多因素的共同影响,土壤pH、温度、全盐和土壤含水量是影响铵态氮和硝态氮含量的主导因素,而农田开发年限,施氮量对铵态氮和硝态氮产生间接的影响。
In order to study the seasonal variation of soil ammonium nitrogen and nitrate nitrogen (
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-N) and their influencing factors in different irrigation areas of the Manas river basin, six irrigation districts were selected as the research objects in May, August and October, 2019. The factors such as soil ammonium nitrogen and nitrate nitrogen, physical and chemical properties, soil environment, nitrogen application rate and development period were analyzed. The results showed that: (1) the differences of soil factors in various irrigation areas made the contents of ammonium nitrogen and nitrate nitrogen significantly changed in descending degree from Xiayedi irrigation area, Mosuowan irrigation area, Anjihai irrigation area, Xinhu general field irrigation area,and Jingouhe irrigation area to Shihezi irrigation area. The ammonium nitrogen and nitrate nitrogen showed obvious seasonal variations, with the change of nitrate nitrogen in descending order in August,October and May.Ammonium nitrogen and nitrate nitrogen accumulated in the surface layer of soil in different months, and decreased with the increase of soil depth. (2) Ammonium nitrogen was negatively correlated with pH, positively correlated with total salt, and positively correlated with water content in May and August; nitrate nitrogen content was positively correlated with soil water content and total salt, and negatively correlated with soil temperature. (3) Soil pH, temperature, total salt and soil water content are the main factors affecting the content of ammonium nitrogen and nitrate nitrogen, while the duration of farmland development and nitrogen application rate have indirect impact on ammonium nitrogen and nitrate nitrogen content.
玛纳斯河流域棉田土壤铵态氮硝态氮
Manas river basincotton field soilammonium nitrogennitrate nitrogen
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