本文選題：微咸水 + 膜孔灌��； 參考：《河北工程大學(xué)》2017年碩士論文

【摘要】：利用微咸水與膜孔灌相結(jié)合的方式進(jìn)行農(nóng)田灌溉,能夠充分發(fā)揮二者的優(yōu)勢,在一定程度上起到節(jié)水的效果。因此研究大田試驗(yàn)條件下微咸水膜孔灌土壤水鹽運(yùn)移規(guī)律是很有必要的。本文在查閱和分析國內(nèi)外微咸水和膜孔灌理論與技術(shù)等相關(guān)文獻(xiàn)資料的基礎(chǔ)上,采用室外試驗(yàn)和理論分析相結(jié)合的技術(shù)路線,主要研究了微咸水膜孔灌田間試驗(yàn)條件下土壤水鹽運(yùn)移規(guī)律及再分布過程中土壤水鹽的運(yùn)移分布規(guī)律,主要研究成果如下:1.研究了灌水技術(shù)要素對(duì)微咸水膜孔灌田間試驗(yàn)土壤水鹽運(yùn)移規(guī)律的影響,其中灌水技術(shù)要素包括灌水量和膜孔直徑,研究結(jié)果表明灌水技術(shù)要素對(duì)土壤水鹽運(yùn)移規(guī)律有較大影響。灌水量增大,土壤垂直濕潤鋒運(yùn)移距離增大,濕潤體內(nèi)相同位置處土壤含水率增大,濕潤體內(nèi)表層土壤電導(dǎo)率值逐漸減小,深層土壤電導(dǎo)率值逐漸增加。膜孔直徑增大,濕潤體內(nèi)表層土壤含水率增大,深層土壤含水率逐漸降低;膜孔直徑增大,膜孔附近土壤電導(dǎo)率逐漸減小,深層土壤電導(dǎo)率逐漸增大。再分布過程并不影響灌水技術(shù)要素對(duì)土壤水鹽運(yùn)移影響。2.研究了微咸水水質(zhì)對(duì)微咸水膜孔灌田間試驗(yàn)土壤水鹽運(yùn)移規(guī)律的影響,微咸水水質(zhì)包含礦化度和鈉吸附比兩個(gè)因素,研究結(jié)果表明微咸水水質(zhì)對(duì)土壤水鹽運(yùn)移規(guī)律有較大影響。灌溉水礦化度為3g/L,土壤的導(dǎo)水能力最大,礦化度增加,土壤的導(dǎo)水能力逐漸降低;灌溉水礦化度小于3g/L,土壤剖面存在脫鹽區(qū),灌溉水礦化度高于3g/L,土壤剖面全部積鹽。鈉吸附比增加,垂直濕潤鋒運(yùn)移距離逐漸減小,濕潤體內(nèi)相同位置處土壤含水率逐漸增大。鈉吸附比增加,對(duì)土壤相同位置土壤電導(dǎo)率值、土壤脫鹽區(qū)、積鹽區(qū)無較大影響。再分布過程并不影響微咸水水質(zhì)對(duì)土壤水鹽運(yùn)移影響。3.研究了分次灌溉對(duì)微咸水膜孔灌土壤水鹽運(yùn)移規(guī)律的影響,分次灌溉包含灌溉次序和淡水續(xù)灌時(shí)間兩個(gè)因素,研究結(jié)果表明分次灌溉對(duì)土壤水鹽運(yùn)移規(guī)律有較大影響。第一次灌溉水水質(zhì)對(duì)土壤濕潤鋒運(yùn)移距離、土壤含水率起主導(dǎo)作用,首次灌水為咸水的土壤濕潤鋒運(yùn)移距離高于土壤首次灌水為淡水的處理,灌水次序咸-淡,中層土壤積鹽效果明顯;灌水次序?yàn)榈?咸,土壤表層和底層積鹽。續(xù)灌時(shí)間由0h延長到12h,濕潤體內(nèi)相同位置處土壤含水率逐漸增大;表層土壤電導(dǎo)率逐漸減小,深層土壤電導(dǎo)率逐漸增大;續(xù)灌時(shí)間由12h延長到72h,土壤含水率與電導(dǎo)率分布規(guī)律與之相反。再分布過程并不影響分次灌溉對(duì)土壤水鹽運(yùn)移影響。綜上所述,本文揭示了微咸水膜孔灌田間試驗(yàn)條件下,灌水量、膜孔直徑、礦化度、鈉吸附比、灌溉次序和淡水續(xù)灌時(shí)間對(duì)土壤水鹽運(yùn)移規(guī)律的影響,以上研究成果可以研究微咸水膜孔灌技術(shù)提供理論指導(dǎo)。
[Abstract]:Irrigation with the combination of brackish water and membrane pore irrigation can give full play to the advantages of the two and save water to a certain extent. Therefore, it is necessary to study the law of water and salt movement of soil water and salt irrigation under the condition of field test. On the basis of related literature and other related literature, the rule of soil water salt migration and the distribution of soil water and salt in the process of redistribution under the condition of field experiment of micro brackish water film hole irrigation were mainly studied with the combination of outdoor test and theoretical analysis. The main research results were as follows: 1. research on the irrigation technology elements to the brackish water film The effects of soil water and salt migration on soil irrigation field test, in which irrigation technology elements include the amount of irrigation and the diameter of the membrane pore, the results of the study show that the irrigation technology elements have a great influence on the soil water and salt migration law. The irrigation amount increases, the migration distance of the soil vertical wetting front increases, the soil moisture content increases at the same location in the wet body, and the moisture content increases. The electrical conductivity of the surface soil gradually decreased, the conductivity of deep soil increased gradually. The diameter of the membrane pore increased, the moisture content of the surface soil increased, the water content in the deep soil decreased gradually, the diameter of the membrane hole increased, the conductivity of soil near the membrane hole gradually decreased, and the conductivity of deep soil soil increased gradually. The redistribution process did not affect irrigation. The influence of technical factors on soil water and salt migration.2. studies the effect of brackish water quality on soil water and salt migration in the field experiment of micro brackish water film hole irrigation. The water quality of brackish water contains two factors: salinity and sodium adsorption ratio. The results show that the water quality of brackish water has a great influence on the movement of soil water and salt. The salinity of irrigation water is 3g/L, soil The water conductivity of the soil is the largest, the salinity is increased, the water conductivity of the soil decreases gradually, the salinity of the irrigation water is less than 3g/L, the soil profile is desalted, the salinity of the irrigation water is higher than that of the 3g/L, the soil profile is all salt, the sodium adsorption ratio increases, the migration distance of the vertical wetting front gradually decreases, and the soil moisture content increases gradually at the same position in the humid body. The increase of sodium adsorption ratio has no significant influence on soil conductivity, soil desalination and salt accumulation in the same soil position. Redistribution process does not affect the effect of salt water quality on soil water and salt migration..3. studies the effect of sub irrigation on the movement of water and salt in saline water membrane pore irrigation, and sub irrigation includes irrigation sequence and fresh water irrigation time. The results of the two factors show that sub irrigation has a great influence on soil water and salt migration. The first irrigation water quality plays a leading role in soil wetting front migration distance and soil moisture content. The migration distance of soil wetting front for the first irrigation is higher than the first irrigation of soil for fresh water, and the order of irrigation is salty and middle soil. The effect of salt accumulation is obvious; the order of irrigation is light salt, soil surface and bottom salt. The time of continuous irrigation is extended from 0h to 12h, the soil moisture content of the soil at the same position in the humid body gradually increases; the conductivity of the soil layer gradually decreases, the conductivity of the deep soil gradually increases; the continuous irrigation time extends from 12h to 72h, and the distribution law of soil water content and electrical conductivity On the contrary, the redistribution process does not affect the effect of sub irrigation on soil water and salt migration. In summary, this paper reveals the effects of irrigation, pore diameter, salinity, sodium adsorption ratio, irrigation order and fresh water on soil water and salt migration under the condition of field irrigation with brackish water membrane irrigation. The above research results can be used to study brackish water. The membrane hole irrigation technique provides theoretical guidance.
【學(xué)位授予單位】：河北工程大學(xué)
【學(xué)位級(jí)別】：碩士
【學(xué)位授予年份】：2017
【分類號(hào)】：S152.7

【相似文獻(xiàn)】

相關(guān)期刊論文 前10條

1 張紅梅;;運(yùn)城盆地土壤中氟運(yùn)移規(guī)律動(dòng)態(tài)試驗(yàn)研究[J];中國地質(zhì);2010年03期

2 宋迪;陳曉飛;張磊;劉暢;張鴻亮;胡宇祥;李彩霞;;凍融期可溶性植物養(yǎng)分的運(yùn)移規(guī)律研究[J];灌溉排水學(xué)報(bào);2009年03期

3 孫志高;劉景雙;;三江平原典型濕地土壤硝態(tài)氮和銨態(tài)氮垂直運(yùn)移規(guī)律[J];水土保持學(xué)報(bào);2007年06期

4 佘國英;徐冰;郭克貞;;污灌條件下農(nóng)田土壤中重金屬的運(yùn)移規(guī)律研究[J];內(nèi)蒙古水利;2006年02期

5 劉全婛;;土—水環(huán)境修復(fù)實(shí)驗(yàn)中Na~+、Cl~-離子運(yùn)移規(guī)律[J];甘肅科技;2010年19期

6 溫以華;不同質(zhì)地和容重對(duì)Cl~-在土壤中運(yùn)移規(guī)律的影響[J];水土保持研究;2002年01期

7 易軍;張晴雯;王明;張惠;王永生;楊正禮;;寧夏黃灌區(qū)灌淤土硝態(tài)氮運(yùn)移規(guī)律研究[J];農(nóng)業(yè)環(huán)境科學(xué)學(xué)報(bào);2011年10期

8 毛萌,任理;室內(nèi)滴灌施藥條件下阿特拉津在土壤中運(yùn)移規(guī)律的研究Ⅰ.物理模擬與參數(shù)確定[J];水利學(xué)報(bào);2005年05期

9 韓霽昌;解建倉;王濤;張宏凱;;蓄水條件下蓄水溝水體與相鄰?fù)寥赖柠}分運(yùn)移規(guī)律研究[J];水利學(xué)報(bào);2009年05期

10 王茜,田軍倉;土壤水-熱-鹽運(yùn)移規(guī)律的研究現(xiàn)狀[J];寧夏工程技術(shù);2005年02期

相關(guān)會(huì)議論文 前3條

1 陳輝;;三峽工程施工期漂污物運(yùn)移規(guī)律及其治理研究[A];“全國水土流失與江河泥沙災(zāi)害及其防治對(duì)策”學(xué)術(shù)研討會(huì)會(huì)議文摘[C];2003年

2 田利軍;呼更新;;忻州窯礦綜放工作面瓦斯運(yùn)移規(guī)律研究[A];瓦斯地質(zhì)與瓦斯防治進(jìn)展[C];2007年

3 楊慧明;唐兵;文光才;;煤巷炮掘過程中圍巖應(yīng)力運(yùn)移規(guī)律研究[A];中國煤炭學(xué)會(huì)煤礦安全專業(yè)委員會(huì)2009年學(xué)術(shù)研討會(huì)交流論文（部分）[C];2009年

相關(guān)博士學(xué)位論文 前3條

1 沈靜;煤礦井下多源一氧化碳運(yùn)移規(guī)律及積聚判別條件研究[D];中國礦業(yè)大學(xué)(北京);2016年

2 吳謀松;凍融土壤水熱鹽運(yùn)移規(guī)律研究及數(shù)值模擬[D];武漢大學(xué);2016年

3 張紅梅;飽和-非飽和土中氟運(yùn)移規(guī)律動(dòng)態(tài)實(shí)驗(yàn)及數(shù)值模擬研究[D];河海大學(xué);2005年

相關(guān)碩士學(xué)位論文 前10條

1 王彪;基于Hydrus-1D的中寧平原包氣帶水分運(yùn)移規(guī)律研究[D];中國地質(zhì)大學(xué)(北京);2015年

2 甯娜;層狀結(jié)構(gòu)包氣帶土中氟運(yùn)移規(guī)律試驗(yàn)研究[D];成都理工大學(xué);2015年

3 秦恒潔;考慮吸附解吸的受載含瓦斯煤滲流規(guī)律與氣固動(dòng)態(tài)耦合模型研究[D];河南理工大學(xué);2014年

4 王凱;基于風(fēng)筒直徑及位置參數(shù)優(yōu)化的綜掘面粉塵運(yùn)移規(guī)律研究[D];太原理工大學(xué);2016年

5 胡魏魏;窄煤柱開米工作面米空區(qū)瓦斯運(yùn)移規(guī)律及其防治技術(shù)研究[D];西安科技大學(xué);2015年

6 李智;爆破掘進(jìn)空間內(nèi)粉塵非穩(wěn)態(tài)運(yùn)移規(guī)律與防塵系統(tǒng)設(shè)計(jì)研究[D];遼寧工程技術(shù)大學(xué);2014年

7 劉思琦;微咸水膜孔灌田間試驗(yàn)土壤水鹽運(yùn)移規(guī)律研究[D];河北工程大學(xué);2017年

8 薛萬來;微潤灌溉條件下土壤水鹽運(yùn)移規(guī)律研究[D];中國科學(xué)院研究生院（教育部水土保持與生態(tài)環(huán)境研究中心）;2014年

9 趙啟峰;緩傾斜多煤層開采圍巖應(yīng)力場及巖層運(yùn)移規(guī)律研究[D];安徽理工大學(xué);2008年

10 康銀紅;黃土塬灌區(qū)包氣帶NO_3～--N運(yùn)移規(guī)律的試驗(yàn)研究[D];西北農(nóng)林科技大學(xué);2006年

，

本文編號(hào)：2028940