Mechanisms of increase in content of water-soluble P in Hachirogata reclaimed soils after NaCl washing
1992; Taylor & Francis; Volume: 38; Issue: 4 Linguagem: Inglês
10.1080/00380768.1992.10416706
ISSN1747-0765
AutoresTadashi Takahashi, Atsushi Sato,
Tópico(s)Soil and Water Nutrient Dynamics
ResumoAbstract In some of the drainage waters in Hachirogata reclaimed land, a very high concentration of inorganic P (up to 2 mg P L-1) has been recently detected (Sato et al. unpublished). The drainage waters flow into the Lake Hachirogata that surrounds the land. Since the lake is also a reservoir, the water circulates through a closed system. Recently, the eutrophication of the lake has been found to be significant (Akita Prefectural Government 1989) and drainage water has been incriminated as one of the P sources of eutrophication. Therefore, it would be important to analyze the mechanisms responsible for the increase of P release from Hachirogata reclaimed land. Key Words: calcium phosphatedesorption of phosphatehydrolysis of Na-soilsorbed phosphate
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