天蓝苜蓿绿肥的腐解规律和养分释放  

Decomposition and Nutrient Release of Alfalfa Green Manure

作　　者：张鑫 周菊华 张朝阳 李扬辉 席琳乔[1] Zhang Xin;Zhou Juhua;Zhang Chaoyang;Li Yanghui;Xi linqiao(The College of Animal Science,Tarim University,Alar 843300,China;Agricultural development service center of the fifth group,the first division of Xinjiang production and Construction Corps,Alar 843300,China)

机构地区：[1]塔里木大学动物科学学院,新疆阿拉尔843300 [2]新疆生产建设兵团第一师五团农业发展服务中心,新疆阿拉尔843300

出　　处：《草学》2021年第4期25-28,共4页Journal of Grassland and Forage Science

基　　金：兵团科技攻关项目(2018AB037)资助。

摘　　要：天蓝苜蓿是优质的一二年生豆科绿肥植物之一,本试验以初花期天蓝苜蓿为材料,采用尼龙袋法测定天蓝苜蓿绿肥的腐解和养分释放。结果表明:天蓝苜蓿腐解速度和养分释放可分三个时期:0~14d为腐解快速期,14~56d为腐解减慢期,56d之后为腐解停滞期,腐解率达到75.89%。天蓝苜蓿养分矿化率为K>N>C>P,分别为97.1478%、82.2871%、79.8132%和52.3682%,腐解与养分释放呈强相关。Medicago lupulina is one of the high quality annual and biennial legume green manure plants.In the experiment,the first flowering M.lupulina was used as material,the nylon bag method was used to determine the decomposition law and nutrient release.The results was showed that the decomposition and nutrient release process could be divided into three periods,the rapid period of 0~14 days,the slow-down period of 14~56 days,the stagnation period of after 56 days.The decompose rate was reached 75.89%.The order of nutrient mineralizati rate was K>N>C>P,and the value was 97.1478%,82.2871%,79.8132%,and 52.3682%respectively.It was a strong correlation between the decomposition and nutrient release of M.lupulina.

关 键 词：苜蓿 绿肥 分解 养分释放 

分 类 号：S551.7[农业科学—作物学]