Study on Characteristics of Decomposition and Nutrients Release of Two Kinds of Green Manure Crops  

2种不同绿肥作物的腐解及养分释放特征研究（英文）

作　　者：董浩[1] 朱国梁[1] 夏光利[1] 毕军[1] 曹卫东[2] 

机构地区：[1]泰安市农业科学研究院,山东泰安271000 [2]中国农业科学研究院农业资源与农业区划研究所,北京100081

出　　处：《Agricultural Science & Technology》2016年第8期1875-1878,共4页农业科学与技术（英文版）

基　　金：公益性行业(农业)科研专项经费(201103005);泰安市科技发展计划(20113008)~~

摘　　要：With nylon mesh bags, the decomposition and nutrients release characteristics of two kinds of green manure crops, February orchid （Orychophragmus violaceus） and Hair Vetch （Vicia villosa Roth）, were investigated in this study. The results showed that these two kinds of green manure crops were decomposed rapidly in the first 14 days, and then decomposed slowly. After 80 days of incubation, the decomposition rates of February orchid and Hair Vetch were 66.92% and 63.12%, respectively. Different nutrients had different release rates from the green manures. Nitrogen （N） and potassium （K） were released rapidly in the initial 7 days, and phosphorus （P） was released steadily in the 80 days of incubation. In the two kinds of green manures, the release rates all ranked as K＇s〉N＇s〉P＇s. The release rates of nutrients, especially P （P〈0.05）, of February orchid were higher than those of Hair Vetch.利用网袋法模拟研究了二月兰、毛苕子2种绿肥的腐解及养分释放特征。结果表明,2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%。2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K>N>P。2种绿肥比较,二月兰的磷累积腐解率显著高于毛苕子,其他养分的累积腐解率也以二月兰较高。

关 键 词：February orchid Hair Vetch Decomposition characteristics Nutrient release characteristics 

分 类 号：S142[农业科学—肥料学]