不同绿肥秸秆养分释放规律的研究  

Research on the Releasing Law of Nutrients in Different Green Manure Straws

作　　者：吕鹏超 梁斌[1] 隋方功[1] 李俊良[1] 郭新璞 周美华[1] 刘庆花[1] 

机构地区：[1]青岛农业大学资源与环境学院,山东青岛266109 [2]山东省威海市环翠区农业局,山东威海264200

出　　处：《作物杂志》2015年第4期130-134,共5页Crops

基　　金：野生植物鼠茅草对果园土壤钾素有效性的生物调节机制(31270382);山东省自然科学基金(ZR2013DQ014);公益性行业(农业)科研专项项目(201103005)

摘　　要：采用田间试验,研究了鼠茅草生草覆盖处理、大豆秸秆覆盖处理和花生秸秆覆盖处理的养分释放规律。结果表明,鼠茅草、大豆、花生秸秆的腐解大致可分为两个时期,养分快速释放期和缓慢释放期。腐解前20d为快速释放期,20d后为缓慢释放期。大豆、花生秸秆腐解的养分释放率均表现为K>P>C>N,鼠茅草腐解养分释放率表现为K>P>N>C。Field experiments were carried out to study the nutrient releasing law intreatments covered by Vulpia myuros C. Gmelin, soybean stubble and peanut straw, respectively. The results showed that their decomposing process could be divided into two periods of rapid release and slow release period, and 20 days before decomposing for quick release period, and after that for slow release period. The nutrient releasing law of soybean stubble and peanut straw appeared K 〉 P 〉 C 〉 N, but that of Vulpia myuros C. Gmelin was K 〉 P 〉 N 〉 C.

关 键 词：鼠茅草 大豆秸秆 花生秸秆 腐解 

分 类 号：S141.4[农业科学—肥料学]