辽宁西安生态养殖模式中碳钾物流研究

养猪产生的粪尿水通过种植水生植物和水稻进行肥水循环净化利用过程中Ｃ、Ｋ物质流进行分析，结果表明：猪身对Ｃ、Ｋ的固定占饲料投入Ｃ、Ｋ总量的２５．２％、７％，猪粪尿Ｃ、Ｋ产出量占２７．２％、９１．２％；水生植物养殖提高了系统光合效率和单位面积有机碳生产量，细绿萍具有极强的富集钾素作用，每生长季固定钾素２７７２ｋｇ／ｈｍ＾２，参加肥水循环的稻田土壤有机碳和全钾含量均高于不参加循环的。从Ｃ、Ｋ物流分析看，

A Study of Carbon and Potassium Flows in Xi an Eco-animal Breeding Model, Liaoning

C and K flows through the process of pig breeding, hydrophyte planting and ricc-planting were shown as follows: 25.2% of C ac 7% of K of foddcrs input were fixcd by pig 27.2% of C and 91.2% of Kwere converted into pig manure and urin e.Organic carbon output rate and plant photo-utilization efficiency of this agroecosystem increased rapidly by breeding hydrophytes. Azolla fliculoid lamk was a kied of potassium-enriched plant and 2772 Kg/hm2 of K2O w ere fixed by it during each growing season. Organiccarbon and potassium levels of Paddy soil were incrcased by participating this cycle of organic manure .Based of those analyses, the Model could be regarded as an ideal ones for setting up ecological breeding and Planting farms in north China.