本文選題：水鹽調(diào)控 + 模式評(píng)估��； 參考：《中國(guó)農(nóng)村水利水電》2017年10期

【摘要】：土壤鹽漬化是影響干旱區(qū)灌區(qū)農(nóng)業(yè)發(fā)展的重要因素之一,且地下水過度開采阻礙土壤的脫鹽作用,嚴(yán)重危害作物生長(zhǎng)甚至導(dǎo)致出現(xiàn)棄耕現(xiàn)象,威脅國(guó)家糧食安全。在分析干旱區(qū)開都河流域典型灌區(qū)水鹽特征的基礎(chǔ)上,采用基于層次分析法的BP神經(jīng)網(wǎng)絡(luò)對(duì)不同水鹽調(diào)控模式進(jìn)行綜合評(píng)價(jià)。結(jié)果表明,增加灌區(qū)作物滴灌比例、限制地下水開采量、實(shí)行冬灌措施既可以減少地表用水量,保證河流下游生態(tài)健康,維持地下水位的年際穩(wěn)定更可以促進(jìn)土壤的脫鹽作用,降低土壤礦化度,減緩?fù)寥利}漬化進(jìn)程。研究結(jié)果探索出了以"地表-地下水資源統(tǒng)籌配置-土壤鹽分控制-灌溉節(jié)水"三元一體的土地資源保護(hù)、灌溉模式改進(jìn)和流域水資源開發(fā)的綜合調(diào)控模式,可為干旱區(qū)灌區(qū)土壤鹽漬化防治提供一定的參考依據(jù)。
[Abstract]:Soil salinization is one of the important factors that affect the development of agricultural development in arid areas, and overexploitation of groundwater hinders the desalination of soil, seriously endangers the growth of crops and even leads to the occurrence of abandoned ploughing, which threatens the national food security. Based on the analysis of the characteristics of water and salt in the typical irrigation area of the open river basin of the arid region, a hierarchical analysis is adopted. The BP neural network of the method is used to synthetically evaluate different water and salt regulation modes. The results show that increasing the proportion of drip irrigation in the irrigation area and limiting the amount of groundwater exploitation can not only reduce the water consumption of the ground surface, ensure the ecological health of the lower reaches of the river, and maintain the interannual stability of the groundwater level, which can promote the desalination of the soil and reduce the soil. The results of the study have explored the protection of land resources, the improvement of the irrigation mode and the development of water resources in the basin, which can provide some reference for the prevention and control of soil salinization in the irrigated area. According to it.

【作者單位】： 中國(guó)水利水電科學(xué)研究院流域水循環(huán)模擬與調(diào)控國(guó)家重點(diǎn)實(shí)驗(yàn)室;河海大學(xué)水文水資源學(xué)院;聯(lián)邦科學(xué)與工業(yè)研究組織水土研究所;
【基金】：“十三五”國(guó)家重點(diǎn)研發(fā)計(jì)劃課題(2016YFC0400903) 江蘇省普通高校研究生科研創(chuàng)新計(jì)劃項(xiàng)目(KYLX16_0739) 中央高�；究蒲袠I(yè)務(wù)費(fèi)專項(xiàng)(2016B40314) 2016年度流域水循環(huán)模擬與調(diào)控國(guó)家重點(diǎn)實(shí)驗(yàn)室代表性成果培育課題(2016CG05)
【分類號(hào)】：S156.4

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