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菌根和间作对滇池流域红壤磷素迁移的影响

张 丽 贾广军 夏运生 张乃明 刘大会 宁东卫 陈 瑞

张 丽, 贾广军, 夏运生, 张乃明, 刘大会, 宁东卫, 陈 瑞. 菌根和间作对滇池流域红壤磷素迁移的影响[J]. 环境科学研究, 2015, 28(5): 760-766.
引用本文: 张 丽, 贾广军, 夏运生, 张乃明, 刘大会, 宁东卫, 陈 瑞. 菌根和间作对滇池流域红壤磷素迁移的影响[J]. 环境科学研究, 2015, 28(5): 760-766.
ZHANG Li, JIA Guangjun, XIA Yunsheng, ZHANG Naiming, LIU Dahui, NING Dongwei, CHEN Rui. Effects of Mycorrhiza and Intercropping on Phosphorus Transference on Sloped Red Soil Land in Dianchi Watershed[J]. Research of Environmental Sciences, 2015, 28(5): 760-766.
Citation: ZHANG Li, JIA Guangjun, XIA Yunsheng, ZHANG Naiming, LIU Dahui, NING Dongwei, CHEN Rui. Effects of Mycorrhiza and Intercropping on Phosphorus Transference on Sloped Red Soil Land in Dianchi Watershed[J]. Research of Environmental Sciences, 2015, 28(5): 760-766.

菌根和间作对滇池流域红壤磷素迁移的影响

基金项目: 国家自然科学基金项目(41161041);国家水体污染控制与治理科技重大专项(2012ZX07102-003-03)

Effects of Mycorrhiza and Intercropping on Phosphorus Transference on Sloped Red Soil Land in Dianchi Watershed

  • 摘要: 为了研究菌根和间作对滇池流域红壤磷迁移的减控影响,根据2013年5—10月采集的6次径流水样,通过田间小区试验,选取玉米/大豆间作的红壤径流区,以单作玉米、单作大豆为对照,并设置抑菌处理(施用苯菌灵)和未抑菌处理,模拟分析间作和菌根处理复合作用下的径流磷迁移特征. 结果表明:除7月19日外,整个雨季各处理下径流中ρ(TP)、ρ(可溶性磷)和ρ(颗粒态磷)随采样时间均无明显变化;所有组合处理中,未抑菌-间作处理下径流中ρ(TP)最低,比单作玉米、单作大豆分别降低25.6%、12.2%;无论是否抑菌,玉米/大豆间作处理可使径流中ρ(可溶性磷)较单作玉米处理降低约24.7%;未抑菌处理下,玉米/大豆间作处理径流中ρ(颗粒态磷)比单作玉米、单作大豆分别降低约14.3%、20.2%,并且在玉米/大豆间作条件下,未抑菌处理径流中ρ(颗粒态磷)显著低于抑菌处理. 另外,无论是何种种植模式,抑菌处理下土壤中w(TP)均显著高于未抑菌处理,增幅在9.0%以上;抑菌条件下,间作玉米处理下土壤中w(TP)、w(速效磷)较单作玉米处理显著降低;与抑菌-单作玉米处理相比,未抑菌-间作玉米处理下土壤中w(TP)和w(速效磷)也分别降低了0.25 g/kg和2.56 mg/kg. 研究显示,菌根真菌协同玉米/大豆间作体系可在一定程度上减少坡耕地红壤磷的径流流失,对滇池流域农业非点源污染具有一定削减潜力.

     

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  • 刊出日期:  2015-05-25

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