苹果渣添加量对猪粪好氧堆肥锌和铜形态的影响

[目的]研究猪粪好氧堆肥中添加剂对锌和铜形态的影响。[方法]以猪粪和秸秆为原料，以果渣为添加剂，设置添加果渣比例为0％、5％、10％和20％。[结果]研究中的果渣添加处理均能达到堆肥腐熟要求，结束时各处理EC变化范围为1．5～2．7mS／cm，发芽指数均超过0．7。在果渣添加量中，5％处理堆肥总锌和总铜增加为最高，达到35．7％和73．5％。在堆肥前后，Sposito形态分析表明，添加果渣10％处理，锌和铜的交换态和吸附态含量增加最高，分别达到1．8％和2．2％。添加果渣，残渣态锌比例小于对照，残渣态铜比例与对照相近。[结论]添加果渣能够促使锌和铜从有效性低的形态向有效性高的形态转化。

Effects of Apple Pomace Additives on Zn and Cu Forms of Pig Manure Aerobic Composting

[ Objective ] The effect of additive on forms of Zn and Cu was studied with aerobic composting of pig manure. [ Method J Pig ma- nure was mixed with wheat straw as balking agent, additive was apple pomace with dosages of 0% ,5% ,10% ~t% 20%. [ Result] The results showed that all treatments reached the request of compost in the end, EC ranged from 1.5 to 2.7 mS cm - 1 while germination index exceeded 0.7 with all treatments. Total amount of Zn and Cu increased highest with the dosage of 5% apple pomace which reached 35.7% and 73.5% , respectively. Analysis of Sposito forms showed that apple pomace dosage of 10% got the highest increase of exchange and adsorption form of Zn and Cu, which reached 1.8% and 2.2%, respectively. Proportion of residual Zn was less than control with apple pomace additive while simi- lar with control for Cu. [ Conclusion] The form of Zn and Cu can be transformed from low available to high available with apple pomace addi- tive during pig manure composting.