宅基地复垦土壤培肥效果研究
Journal of Soil and Water Conservation(2012)
Abstract
宅基地复垦设施土壤培肥的目的是为了合理有效地利用土地资源,使复垦土壤迅速恢复农业生产。试验采取4因素3水平随机组合设计。结果表明:增施高量有机肥能够提高宅基地复垦土壤有机质和速效养分,与对照相比有机质提高65.22%;水解氮增加2.31倍;速效磷增加3.26倍;速效钾提高66.53%。T1、T5、T7处理能够迅速改善复垦土壤物理结构,与基础土壤相比降低土壤容重16.35%~25.45%;增加土壤总孔隙度14.62%~21.51%;毛管孔隙度增加11.89%~15.66%;非毛管孔隙度增加25.55%~38.32%;与对照相比土壤渗水系数提高了12.0~17.4倍;能够明显提高蔬菜产量,平均增幅44.01%~53.51%。筛选出的"有机肥+无机肥+脱硫石膏改良剂"、"有机肥+无机肥+秸秆"为天津地区宅基地复垦土壤培肥适宜模式。
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Key words
fertility pattern,rape yields,soil physical property,quality,homestead reclamation soil,soil nutrient
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