两种不同绿肥作物的腐解及养分释放特征研究  

Study on Decomposing and Nutrient Releasing Characteristics of Two Kinds of Green Manure Crops

作　　者：牟小翎[1] 董浩[1] 夏光利[1] 毕军[1] 朱国梁[1] 李志杰[2] 曹卫东[3] 

机构地区：[1]泰安市农业科学研究院,山东泰安271000 [2]中国农业科学院德州盐碱土改良实验站,山东德州253015 [3]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《山东农业科学》2015年第9期94-97,共4页Shandong Agricultural Sciences

基　　金：公益性行业(农业)科研专项(201103005);泰安市科技发展计划项目(2011008)

摘　　要：利用埋袋法模拟研究了二月兰、毛苕子两种绿肥的腐解及养分释放特征。结果表明,两种绿肥均在翻压后14 d内腐解较快,随后腐解速率变慢,翻压80 d时,二月兰、毛苕子的累积腐解率分别为66.92%和63.12%。两种绿肥不同养分的释放快慢不同,氮和钾在翻压7 d内快速释放,磷在翻压80 d内均稳步释放,养分累积释放率表现为钾>氮>磷。两种绿肥比较,二月兰的磷累积释放率显著高于毛苕子,其他养分的累积释放率也以二月兰较高。The decomposition and nutrient release characteristics of two kinds of green manure crops, Orychophragmus violaceus and Vicia villosa L.,were studied by the nylon mesh bag method.The results showed that both the two green manure crops decomposed fast in the first 14 days after incubation,and then decomposed slowly.After 80 days of incubation,the accumulated decomposition rate of Orychophragmus viola-ceus and Vicia villosa L.were 66.92% and 63.12% respectively.The releasing rates of different nutrients in them were varied.Nitrogen （N）and potassium （K）were released rapidly in the initial 7 days,and phosphor-us （P）was released steadily in 80 days after incubation.The nutrient release rate was K 〉N 〉P.Orycho-phragmus violaceus had higher nutrients release rates compared with Vicia villosa L.,and had significantly higher phosphorus（P）release rate,specifically.

关 键 词：二月兰 毛苕子 腐解特征 养分释放特征 

分 类 号：S142.1[农业科学—肥料学]