摘要
在温室条件下采用盆栽试验方法在4类典型土壤上种植小白菜,以自来水灌溉作为对照,研究再生水灌溉对小白菜生长、土壤磷形态转化特征以及不同类型土壤间的差异性。结果表明,全再生水灌溉:①显著增加红壤、潮土、塿土小白菜生物量,分别为9.1%,16.1%,9.9%;黑土小白菜生物量增加不显著;②显著增加4类土壤小白菜地上部磷含量和土壤速效磷含量,红壤、潮土、塿土和黑土的小白菜地上部磷含量分别增加17.6%,20.0%,18.8%和15.8%,土壤速效磷含量分别增加16.7%,32.2%,34.4%,16.8%;③显著增加红壤、潮土、塿土的活性有机磷和无机磷组分中活性较高的Ca2-P,黑土的Ca2-P含量显著增加,但其活性有机磷含量变化不大。再生水灌溉能促进土壤稳性较高的有机、无机磷组分向活性较高的组分转化,但不同类型土壤间存在差异性。
Green house pot culture was adopted to study the effect of reclaimed wastewater irrigation on the dry weight（DW） and P concentration of green vegetables, soil Olsen-P concentration, conversion characteristics of soil phosphorus in different soils（e, g. , red soil, fluvo-aquic soil, loess soil and black soil）. The findings suggested that applied reclaimed wastewater increased significantly, in comparison to control, the DW of green vegetables in red soil, fluvo-aquic soil, loess soil, increased by 9.1%, 16. 1%, 9.9~/0, respectively, but that had not change in black soil. Under reclaimed wastewater treatment, the green vegetables phosphorus concentration in red soil, fluvo-aquic soil, loess soil and black soil increased significantly by 17.6%, 20.0%, 18.8%, 15.8%, respectively, and soil Olsen-P concentration increased by 16.7%, 32.2%, 34.4%, 16.8%, respectively. Reclaimed wastewater irrigation also increased Ca2-P concentration in all the four soils and active organic phosphorus in red soil, fluvo-aquic soil and loess soil, but did not change active organic phosphorus in black soil. Reclaimed wastewater irrigation was definitely improved soil phosphorus utilization efficiency but significant differences were found in different soils under reclaimed municipal wastewater irrigation.
出处
《水土保持学报》
CSCD
北大核心
2014年第3期232-235,258,共5页
Journal of Soil and Water Conservation
基金
国家自然科学基金项目(51209208
51209209)
国家高技术研究发展计划"863"项目(2012AA101404)
农村领域国家科技计划支撑项目(2013BAD07B14)
中央级公益性科研院所基本科研业务费专项(0032012034)
关键词
再生水
不同类型土壤
小白菜
土壤速效磷
有机磷
无机磷
reclaimed wastewater
different soils types
green vegetables
soil Olsen-P
organic phosphorus
inorganic phosphorus
