摘要
在巢湖流域典型区庐江县开展面源污染防治种植试验,分析8种面源污染防治种植模式对芹菜土壤温度、湿度和氮磷流失风险的影响。结果表明:8种模式芹菜地0~10 cm土壤温度总体呈上升趋势;在芹菜定植后70 d内,减量施肥+生物基膜+松土促根剂模式和有机无机混施+生物基膜+松土促根剂模式0~10 cm土壤温度较高;减量施肥+生物基膜、减量施肥+松土促根剂+生物基膜模式、有机无机混施+生物基膜和有机无机混施+松土促根剂+生物基膜模式0~10 cm土壤含水量高于不施肥空白模式,8种模式芹菜地0~10 cm土壤水分在定植后0~35 d内变化较大,35 d后水分变化趋于平缓;8种模式的氮磷潜在流失率均低于习惯施肥对照模式;减量施肥+生物基膜+松土促根剂模式的氮和磷潜在流失率最低,分别为10.23%和80.59%;8种模式中,减量施肥+松土促根剂+生物基膜模式的氮和磷潜在流失率均降低最多,分别降低80.77%和10.34%,降低幅度最少的是有机无机混施模式,分别降低3.80%和1.62%。相对于习惯施肥对照模式,氮的潜在流失率的降低幅度大于磷的降低幅度。
The study examines the effects of eight planting models on risk of nitrogen and phosphate by integrating non-point source pollution control,based on experiments in the typical area of Lujiang County in Chaohu Lake Basin.The preliminary results included that:(i)celery soil temperature in 0~10 cm of eight planting models was generally on the rise;Within 70 days after planting celery,the higher soil temperature in 0~10 cm were that reduced fertilization,bio-based film and rooting agent model and organic and inorganic mixed fertilization,bio-based film,and rooting agent model.(ii)The moisture of 0~10 cm soil in the reduced fertilization,bio-based film model、the reduced fertilization,bio-based film and rooting agent model、organic and inorganic mixed fertilization,bio-based film model and organic and inorganic mixed fertilization,bio-based film and rooting agent model were higher than that in the blank model.In 0~35 days,there was a large change at the celery soil moisture of eight planting models.After 35 days of planting,the moisture changed more slowly.(iii)Eight planting models’potential nitrogen and phosphorus loss rate was lower than the conventional fertilization control model.The combination of reduced fertilization,bio-based film,and rooting agent realized the lowest potential nitrogen and phosphorus loss rate of 10.23%and 80.59%;Among eight planting models,reduced fertilization,bio-based film,and rooting agent’s potential nitrogen and phosphorus loss rate dropped the most,which was 80.77%and 10.34%for nitrogen(N)and phosphate(P).The most significant reduction was in the organic-inorganic mixed application mode,which decreased by 3.80%and 1.62 respectively.Compared with the conventional fertilization control model,the potential loss rate of nitrogen(N)decreased more than that of phosphorus(P).
作者
刘辉
胡梦甜
韩永伟
高馨婷
叶家慧
刘华民
LIU Hui;HU Meng-tian;HAN Yong-wei;GAO Xin-ting;YE Jia-hui;LIU Hua-min(Chinese Research Academy of Environmental Sciences,Beijing 100012,China;Inner Mongolia University,Huhehot 010021,China)
出处
《环境生态学》
2019年第8期28-34,共7页
Environmental Ecology
基金
国家水体污染控制与治理科技重大专项(2015ZX07103-007)资助.
关键词
种植模式
氮磷流失风险
面源污染
planting models
the risk of nitrogen(N)and phosphate(P)losses
non-point source pollution
