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| Effect of Nutrient Solution Diluted from Swine Effluents on Rape Seedlings in Water Cultivation |
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| KeyWord:swine effluents; nutrient solution; water culture; rape; nitrate |
| Author Name | Affiliation | | ZHANG Yue | College of Agronomy, Northwest A&F University, Yangling 712100, China
Institute of Agro-environmental Protection, MOA, Tianjin 300191, China | | QIU Ling | College of Agronomy, Northwest A&F University, Yangling 712100, China
College of Mechanical and Electronic Engineering, Northwest A&F University, Yangling 712100, China | | ZHAO Jun-yi | Institute of Agro-environmental Protection, MOA, Tianjin 300191, China | | SHI Ya-nan | Institute of Agro-environmental Protection, MOA, Tianjin 300191, China | | ZHANG Long-jiang | Nanjing Institute of Environmental Sciences, MEP, Nanjing 210042, China | | ZHANG Ke-qiang | Institute of Agro-environmental Protection, MOA, Tianjin 300191, China | | WANG Feng | Institute of Agro-environmental Protection, MOA, Tianjin 300191, China |
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| Abstract: |
| In China, swine effluents not only cause agro-environmental pollution, but may also restrict healthy and sustainable development of livestock farming. A water cultivation experiment with rape seedlings was used to explore the feasibility of swine effluents as nutrient solution. The experiment included six different dilutions of swine effluents and one inorganic nutrient solution as a control. In the treatments with 6 times and 8 times diluted swine effluents, the survival rate and free water to bound water ratio of rape seedlings were highest, whereas the fresh weight of the aboveground parts had no significant difference from the control. Compared with the inorganic nutrient solution, the contents of chlorophyll increased by 51.08% and 63.16%, but nitrate content reduced by 89.98% and 90.27% in the treatments of 6 times and 8 times diluted effluents, respectively. It is concluded that 6 times or 8 times dilution of the swine effluents could be used for rape soilless cultivation. |
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