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土壤水分有效性對(duì)梭梭苗根系導(dǎo)水率的動(dòng)態(tài)影響
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國家重點(diǎn)基礎(chǔ)研究發(fā)展計(jì)劃(973 計(jì)劃)資助項(xiàng)目(2006CB403406),、國家自然科學(xué)基金資助項(xiàng)目(40771034,、50869001),、國家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目(2006AA100203)和水利部公益性行業(yè)科研專項(xiàng)(200801104-2)


Dynamic Influence of Soil Water Effectiveness on Root Hydraulic Conductivity of Haloxylon ammodendron Sapling
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    摘要:

    為探討土壤水分有效性和萌芽后天數(shù)對(duì)梭梭苗根系導(dǎo)水率的影響,，進(jìn)行了盆栽試驗(yàn),。試驗(yàn)結(jié)果表明,，梭梭苗的根系總導(dǎo)水率隨土壤水分有效性和萌芽后天數(shù)的增加均呈線性增加,；梭梭苗的單位面積根系導(dǎo)水率隨土壤水分有效性的增加呈先增后減的拋物線變化,，隨萌芽后天數(shù)的增加呈線性遞減,。獲得的梭梭苗根系導(dǎo)水率的動(dòng)態(tài)變化規(guī)律,，可用于根系吸水動(dòng)力學(xué)模型和植物體水分傳輸規(guī)律的研究。

    Abstract:

    The effects of soil water availability and the days after budbreak on the root hydraulic conductivity in Haloxylon ammodendron sapling with potted plants was quantitatively analyzed. The results showed that the entire root hydraulic conductivity of Haloxylon ammodendron sapling increased linearly with soil water availability and the days after budbreak; the root hydraulic conductivity per unit root surface area of Haloxylon ammodendron sapling increased at first and then decreased according to parabola with soil water availability, and the root hydraulic conductivity per unit root surface area of Haloxylon ammodendron sapling decreased linearly with the days after budbreak. The obtained quantitative relationships between root hydraulic conductivity of Haloxylon ammodendron sapling and soil water availability and the days after budbreak can be applied to the research of root water uptake dynamic models and the research of plant water transfer. 

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姚立民,李伏生,佟玲,謝恒星.土壤水分有效性對(duì)梭梭苗根系導(dǎo)水率的動(dòng)態(tài)影響[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(5):68-72. Yao Limin, Li Fusheng, Tong Ling,Xie Hengxing. Dynamic Influence of Soil Water Effectiveness on Root Hydraulic Conductivity of Haloxylon ammodendron Sapling[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(5):68-72.

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