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Evaluation of Nutrient Discharges from Greenhouses with Flooding Soil Surface at Two Different Locations  

Kim, Min-Kyeong (Climate Change & Agroecology Division, Department of Agricultural Environment, National Academy of Agricultural Science, RDA)
Roh, Kee-An (Climate Change & Agroecology Division, Department of Agricultural Environment, National Academy of Agricultural Science, RDA)
Ko, Byong-Gu (Climate Change & Agroecology Division, Department of Agricultural Environment, National Academy of Agricultural Science, RDA)
Park, Seong-Jin (Climate Change & Agroecology Division, Department of Agricultural Environment, National Academy of Agricultural Science, RDA)
Jung, Goo-Bok (Climate Change & Agroecology Division, Department of Agricultural Environment, National Academy of Agricultural Science, RDA)
Lee, Deog-Bae (Climate Change & Agroecology Division, Department of Agricultural Environment, National Academy of Agricultural Science, RDA)
Kim, Chul-Soo (Dept. of Civil Engineering, College of Science & Engineering, Kyungpook National University)
Publication Information
Korean Journal of Soil Science and Fertilizer / v.43, no.3, 2010 , pp. 315-321 More about this Journal
Abstract
Greenhouse soil cultivated with excessive compost and chemical fertilizer has been an issue to deteriorate soil and water quality in the environment. The objective of this study was to evaluate the nutrient outflow by desalting method, flooding soil surface, after vegetable cropping in greenhouse soils. Field experiment from July to September 2008, was conducted to quantify greenhouse locations, i.e. alluvial plain and local valley. The changes of desalinization in both locations were higher as the amounts of irrigated and drained water were increased. Particularly, the ratio of desalinization in alluvial plain was much higher (66.7%) than the one in local valley (45.6%). However, $NH_4$-N contents of local valley soil during the flooding were higher than in those of alluvial plain. This was caused by high total nitrogen and organic matter in local valley soil than those in alluvial plain soil. With comparing to the input and output loads of T-N and T-P in greenhouses with local valley and alluvial plain soils, the output loads of nutrients were larger than the input loads of nutrients. This result showed that the flooding soil surface can be a good treatment to desalinize greenhouse soils. However, this conclusion remained that the flooding water containing high N and P concentrations might cause the secondary effect on the quality of streams and groundwater since excessive nutrient concentrations can be the main cause of eutrophication problem in aquatic environment.
Keywords
Greenhouse soil; Desalinization; Flooding soil surface; Nutrient balance; Nitrogen; Phosphorous;
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Times Cited By KSCI : 3  (Citation Analysis)
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