24种热带禾本科植物的绿肥价值分析与评价  

Analysis and Assessment of Green Manure for 24 Kinds of Tropical Gramineae Plants

作　　者：赖杭桂[1] 高玲[2] 张如莲[2] 郇恒福[2] 刘国道[2] 

机构地区：[1]海南大学农学院,海南海口570228 [2]中国热带农业科学院,海南儋州571737

出　　处：《热带作物学报》2011年第8期1411-1417,共7页Chinese Journal of Tropical Crops

基　　金：海南省自然科学基金"海南禾本科牧草资源调查及综合评价"资助项目(No.809027);中国热带农业科学院热带作物品种资源研究所研究生基金项目"热带豆科绿肥对土壤改良效果研究"(No.YJS-2008-S004)

摘　　要：采集热区24种禾本科植物,对其N、P、K、Ca、Mg、S等17种矿质元素进行分析评价。结果表明:这24种禾本科植物的N、P、K含量中等,纤维化程度高,根据分级标准,一级绿肥占4.2%,二级绿肥占50.0%,三级绿肥占45.8%;中量元素Ca、Mg、S和微量元素丰富,重金属含量低,是安全的热带绿肥;其中狼尾草和早熟禾本科植物的P、K、Ca、S、Fe含量明显高于其它参试绿肥。In this paper, 17 kinds of mineral element including N, P, K, Ca, Mg, S of 24 kinds of Gramineae green manure were analyzed. The results showed that the congtent of N, P, K was in the middle with high fiberization. According to the classification criteria （National Agri-tech Extention Center of China, 1999）, 4.2% , 50.0% and 45.8% could be classified as grade 1, grade 2 and grade 3, respectively. Also, Gramineae green manure was rich in mineral nutrient content, but low in heavy metal content, so Gramineae green manure was a safe in use. However, the contents of P, K, Ca, S, Fe of Pennisetum alopecuroides and Poa arjinsanensis were higher.

关 键 词：禾本科绿肥 营养成分 评价 

分 类 号：S142[农业科学—肥料学]