Chinese Journal OF Rice Science >
Nutrients Removal From Fish Pond by Rice Planting
Received date: 2014-08-14
Revised date: 2014-12-15
Online published: 2015-03-10
An experiment was conducted to elucidate the effects of rice planting on nutrients removal from yellow catfish pond. The results indicated that the concentrations of nitrogen and phosphorus in the water of the pond with rice planting significantly decreased during the whole rice growing season. The concentrations of total nitrogen and total phosphorus in the water without rice planting were 11.98 mg/L and 0.52 mg/L in the harvest time of rice,respectively, higher than the secondary standard of the Requirement for Water Discharge from Freshwater Aquaculture Pond. While the concentrations of total nitrogen and total phosphorus were 0.49 mg/L and 0.08 mg/L with rice planting, meeting the primary standard of the Requirement for Water Discharge from Freshwater Aquaculture Pond. The contents of total nitrogen (TN), ammonium nitrogen (NH4+-N), nitrate nitrogen (NO3--N), total phosphorus (TP), and phosphate (PO43--P) in the water with rice planting reduced by 95.95%, 98.09%, 98.07%, 84.47% and 64.57%. COD contents and pH value in the water with rice culture were lower than those without rice culture. It demonstrated that rice planting help reduce water nutrients and improve water quality.
Key words： rice; aquaculture water; eutrophication; purification; yellow catfish pond
Feng-bo LI, Jin-fei FENG, Xi-yue ZHOU, Dian-xing WU, Fan CHEN, Chun-chun XU, Fu-ping FANG . Nutrients Removal From Fish Pond by Rice Planting[J]. Chinese Journal OF Rice Science, 2015 , 29(2) : 174 -180 . DOI: 10.3969/j.issn.1001-7216.2015.02.009
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