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Study on Effects of Different Bulking Agents on the Pig Manure Composting Maturity

Li Fan

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Abstract

[Objective]The study aimed to research mixture ratio of conditioners and variation of nutrient in the process of pig manure composting maturity. [Method] In the conditions of proportions of pig manure and rice straw were 4:1,6:1,10:1,the change of temperature,pH,TN、TP、TK of three treatments (①:120 kg pig manure+30 kg rice straw; ②:135.0 kg pig manure +22.5 kg rice straw; ③:140 kg pig manure +14 kg rice straw) were studied. [Result]The results showed that the highest temperatures three treatments were 51.0,57.0,60.5 ℃. The time maintaining above 50 ℃ were 4,10,3 d. the contents of main nutrition (N+P2O5+K2O) were 11.33%,12.07 and 13.19% at 25th day. The pH value of three treatments all increased and reached 8.73,9.00 and 8.79 respectively. [Conclusion]Pig manure and rice straw proportion 6:1 was best for composting maturity.

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[Objective]The study aimed to research mixture ratio of conditioners and variation of nutrient in the process of pig manure composting maturity. [Method] In the conditions of proportions of pig manure and rice straw were 4:1,6:1,10:1,the change of temperature,pH,TN、TP、TK of three treatments (①:120 kg pig manure+30 kg rice straw; ②:135.0 kg pig manure +22.5 kg rice straw; ③:140 kg pig manure +14 kg rice straw) were studied. [Result]The results showed that the highest temperatures three treatments were 51.0,57.0,60.5 ℃. The time maintaining above 50 ℃ were 4,10,3 d. the contents of main nutrition (N+P2O5+K2O) were 11.33%,12.07 and 13.19% at 25th day. The pH value of three treatments all increased and reached 8.73,9.00 and 8.79 respectively. [Conclusion]Pig manure and rice straw proportion 6:1 was best for composting maturity.

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Available abstract

[Objective]The study aimed to research mixture ratio of conditioners and variation of nutrient in the process of pig manure composting maturity. [Method] In the conditions of proportions of pig manure and rice straw were 4:1,6:1,10:1,the change of temperature,pH,TN、TP、TK of three treatments (①:120 kg pig manure+30 kg rice straw; ②:135.0 kg pig manure +22.5 kg rice straw; ③:140 kg pig manure +14 kg rice straw) were studied. [Result]The results showed that the highest temperatures three treatments were 51.0,57.0,60.5 ℃. The time maintaining above 50 ℃ were 4,10,3 d. the contents of main nutrition (N+P2O5+K2O) were 11.33%,12.07 and 13.19% at 25th day. The pH value of three treatments all increased and reached 8.73,9.00 and 8.79 respectively. [Conclusion]Pig manure and rice straw proportion 6:1 was best for composting maturity.

Key concepts: Straw, Manure, Animal science, Agronomy, Rice straw, Nutrient, Compost, Chicken manure

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