本文關(guān)鍵詞： 種植方式 溝渠底泥 養(yǎng)分賦存 柴河流域　出處：《生態(tài)與農(nóng)村環(huán)境學(xué)報》2017年06期 　論文類型：期刊論文

【摘要】：于旱季及雨季末期對柴河流域不同農(nóng)田種植模式下溝渠底泥進行原位采集,分析了溝渠底泥中養(yǎng)分含量變化特征及影響?zhàn)B分變化的主要因素。結(jié)果表明:除有效磷外,溝渠底泥有機質(zhì)、全氮、堿解氮及全磷含量均表現(xiàn)為大棚蔬菜地玉米地,說明不同農(nóng)田利用及管理方式是導(dǎo)致溝渠底泥養(yǎng)分產(chǎn)生差異的主要因素,而溝渠水分條件及植被的變化則導(dǎo)致雨季前后溝渠底泥養(yǎng)分呈現(xiàn)不同的時空差異。溝渠養(yǎng)分的長期積累將影響溝渠濕地系統(tǒng)對徑流污染物的去除能力。因此,優(yōu)化農(nóng)田種植方式及管理模式仍是滇池流域面源污染防控中最重要的內(nèi)容之一。
[Abstract]:In the dry season and the end of rainy season, in situ sampling of channel bottom sediment under different farmland planting patterns in Chaihe basin was carried out. The variation characteristics of nutrient content in channel sediment and the main factors affecting nutrient change were analyzed. The results showed that, except for available phosphorus, The contents of organic matter, total nitrogen, alkali-hydrolyzed nitrogen and total phosphorus in ditch bottom mud were all shown as corn fields in greenhouse vegetable field, which indicated that different farmland utilization and management methods were the main factors leading to the difference of nutrient content in ditch bottom mud. However, the variation of water condition and vegetation results in different temporal and spatial differences of sediment nutrients in the channel before and after the rainy season. The long-term accumulation of nutrient in the channel will affect the removal capacity of runoff pollutants in the channel wetland system. It is still one of the most important contents in the prevention and control of non-point source pollution in Dianchi Lake Basin to optimize farmland planting mode and management mode.
【作者單位】： 昆明學(xué)院生命科學(xué)與技術(shù)系;云南大學(xué)生態(tài)學(xué)與環(huán)境學(xué)院;
【基金】：云南省應(yīng)用基礎(chǔ)研究項目(2014FD040) 國家自然科學(xué)基金(31360152) 國家水體污染控制與治理科技重大專項(2012ZX07102-003) 昆明學(xué)院校級科研項目(XJL13012)
【分類號】：X52;X712

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