Behavior of Coastal Greenhouse Soil Nitrogen as Influenced by Subsurface Drainage and Organic Fertilizer

被引：0
|
作者：
Hou M. [1 ,2 ]
Chen J. [3 ]
Yang Q. [3 ]
Lin Z. [1 ]
Jin Q. [4 ]
Zhong F. [1 ]
机构：
[1] College of Horticulture, Fujian Agriculture and Forestry University, Fuzhou
[2] Engineering Research Center of Fujian University of Modern Facilities Agriculture, Fuqing
[3] College of Horticulture and Forest, Fujian Vocational College of Agriculture, Fuzhou
[4] Institute of Water Conservancy Science of Nanjing, Nanjing
来源：
Nongye Jixie Xuebao/Transactions of the Chinese Society for Agricultural Machinery | 2019年 / 50卷 / 11期
关键词：
Fate; Greenhouse soil; Microbial organic fertilizer; Nitrogen; Subsurface drainage;
D O I：
10.6041/j.issn.1000-1298.2019.11.029
中图分类号：
学科分类号：
摘要：
Aiming to reveal the fate and transformation mechanism of soil nitrogen under coastal facilities cultivation, three treatments, including subsurface drainage combined with microbial organic fertilizer application (S-OF), subsurface drainage combined with inorganic fertilizer application (S-IF) and inorganic fertilizer application without subsurface drainage (CK) were designed. The model system was grape and rape intercropping cultivation. The distribution of soil total nitrogen in vertical profile, the changes of mineral and organic nitrogen in tillage layer and their correlation with soil physical and chemical properties were observed. The results showed that soil bulk density was decreased and soil porosity was increased under the combination of subsurface drainage and microbial organic fertilizer application; subsurface drainage promoted the transfer of total nitrogen from topsoil to deep soil, and the reduction rate of total nitrogen in topsoil of S-OF treatment was smaller than that of S-IF treatment; more than 80% of total nitrogen in topsoil existed in the organic form, and the proportion of mineral nitrogen was very small, S-OF was beneficial to the increase of mineral nitrogen content in the later stage of the experiment; the mineral nitrogen content in plough layer soil was positively correlated with soil organic matter and total organic carbon. Subsurface drainage and application of microbial organic fertilizer were conductive to improving the soil structure in coastal land, increasing the content of organic matter and total organic carbon in tillage soil, and promoting the transformation of soil organic nitrogen to mineral form. The conclusions can provide scientific basis for the improvement of coastal greenhouse soil and the decision-making of irrigation and fertilization. © 2019, Chinese Society of Agricultural Machinery. All right reserved.
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页码：259 / 266
页数：7
相关论文
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