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- W2388579401 abstract "Chicken manures added with copper(Cu) and zinc(Zn) were used for composting experiment to study the changes of humus complexed zinc(humus-zinc) extracted by H_2O,NaOH and NaOH-Na_4P_2O_7 mixture(expressed as H_2O-Zn, NaOH-Zn and NaOH-Na4P_2O_7-Zn),respectively.The effect of copper in compost on humus-zinc and the relationship between humus-zinc and available Zn were also revealed.H_2O-Zn of raw manure accounted for 0.74%of total Zinc of the compost,and decreased with the manure composting.With the increase of adding zinc(Cu/Zn was 1:1,1:2 and 1:3),H_2O-Zn increased correspondingly,and decreased with the process of decomposition.The average percentages of H_2O-Zn to total Zn of the treatment of 1:1,1:2 and 1:3 were lower than that of the control(raw materials).H_2O-Zn was increased with the increase of copper content.NaOH-Zn accounted for 62.41%of total Zn of the raw manure and decreased dramatically with the compost proceeding.With the increase of adding Zn,NaOH-Zn increased,but decreased with decomposing process.During decomposition,the added copper increased the content of NaOH-Zn.NaOH-Na_4P_2O_7-Zn accounted for 13.59%of total copper of the raw manure,which increased with time of composting.With the added Zn content increasing in compost manure,the percentage of NaOH-Na_4P_2O_7-Zn to total Zn changed slightly.The added copper had no significant effect on NaOH-Na_P_2O_7-Zn.Before composting,of all humus-Zn extracted by H_2O,NaOH and NaOH-Na_4P_2O_7,respectively,50%-85%of extracted humus-Zn was present in NaOH fraction,10%-50%in NaOH-Na_4P_2O_7 fraction,and 0-5%in H_2O fraction.After composting,6%-41%of extracted humus-Zn was present in NaOH fraction,58%-92%in NaOH-Na_4P_2O_7 fraction,and 0-2%in H_2O fraction.With the added zinc contents increasing, the distribution percent of NaOH-Na_4P_2O_7-Zn(extracted Zn) decreased.H_2O-Zn,NaOH-Zn,and DTPA-Zn were positively correlated to each other and all were negatively correlated to NaOH-Na_4P_2O_7-Zn.(P≤0.01)." @default.
- W2388579401 created "2016-06-24" @default.
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- W2388579401 date "2009-01-01" @default.
- W2388579401 modified "2023-09-23" @default.
- W2388579401 title "Dynamic changes of different soluble humus zinc in chicken manure" @default.
- W2388579401 hasPublicationYear "2009" @default.
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