结晶有机肥对土壤水稳性团粒组成及微结构的影响  

Effect of Crystal Organic Fertilizer on Water-stable Aggregates and Micro-structure of Soils

作　　者：刘义新[1] 韩移旺[2] 唐绅 安德艳 江玉平[1] 刘武定[5] 

机构地区：[1]中国科学技术大学地球与空间科学学院,合肥230026 [2]中国科学技术大学经济技术学院,合肥230052 [3]湖南省烟草公司永州支公司,永州425000 [4]贵州省烟草公司松桃支公司,松桃554300 [5]华中农业大学资源与环境学院,武汉430070

出　　处：《华中农业大学学报》2003年第5期452-456,共5页Journal of Huazhong Agricultural University

基　　金：国家烟草总局项目(931052);中国科技大学博士基金项目(990193)资助

摘　　要：实验室条件下研究了江西鹰潭红壤、河南焦作褐土、安徽芜湖黄红壤、湖北五峰山地黄棕壤等4种类型土壤在结晶有机肥处理前后它们的水稳性团粒组成及其微结构的变化。结果表明:结晶有机肥处理显著增加土壤0.25～2.0 mm粒径水稳性团粒比重;处理后土粒机械强度增大,土粒中微孔增多,淹水后可见大量气泡冒出。扫描电镜下可见处理后土壤微结构得到明显改善。供试4种类型土壤的处理结果一致。Water-stable aggregates and micro-structure of different type soils such as Jiangxi red soil, Henan brown soil, Anhui yellow-red soil and Hubei yellow-brown soil were researched. After the crystal organic fertilizer was applied to those soils, 0. 25-2. 0 mm water-stable aggregates, physical strength and micro pore of the soil were increased. The micro-structure of these soils observed by electron microscope was improved by the crystal organic fertilizer.

关 键 词：结晶有机肥 土壤 水稳性团粒 机械强度 微结构 肥力 

分 类 号：S158[农业科学—土壤学]