鸡羽毛氮素释放规律及肥效研究

Study on the Regularity of Mineral N Release and Fertility of Chicken Feather

本文通过室内好气培养试验和盆栽试验,研究了不同细度、不同用量鸡羽毛在不同土壤上的无机氮释放规律及肥效。试验结果表明,好气培养2～3周内,羽毛无机氮释放速率和释放量均较高,羽毛中有15%～70%的氮以无机氮的形式释入出来。2～3周以后,羽毛无机氮的释放速率和释放量则显著下降。羽毛的细度、用量及土壤类型对羽毛无机氮的释放有显著的影响。在施氮量相同的情况下,施用羽毛和施用化肥对盆栽油菜可以起到相同的增产效果。

This study was undertaken of elicit the mineral nitrogen release regularity and fertility of chicken feather in different degrees of fineness and amount by aerobic incubation and soil culture under green house condition.The result shows that both mineral nitrogen release rate and amount were high in 2～3 week incubation and about 15%～17% total nitrogen released from feather in mineral nitrogen,and afterward both decreased significantly.The degrees of fineness,amounts of feather and soil types all af- fected the release of mineral nitrogen from feather obviously.The feather application increased the yield of rapes to the same extent as compared with chemical fertilizer containing the same amounts of nitrogen.