瑪河灌區(qū)膜下滴灌棉田表層土壤鹽分空間變異性
發(fā)布時間：2018-11-07 18:07
【摘要】：應(yīng)用區(qū)域采樣點(diǎn)數(shù)據(jù),結(jié)合地統(tǒng)計學(xué)與空間簡單克里金插值等分析方法,分析了瑪納斯河流域中游平原灌區(qū)膜下滴灌棉田表層土壤鹽分的空間變異性。結(jié)果表明:棉花采收后表層土壤含鹽量變異系數(shù)為35.617%,表現(xiàn)為中等強(qiáng)度變異性,服從正態(tài)分布;具有強(qiáng)二階趨勢效應(yīng),灌區(qū)中部趨勢影響力變化劇烈;塊金系數(shù)小于25%,具有很強(qiáng)的空間相關(guān)性,其變異主要受空間結(jié)構(gòu)性因素的影響;沿等高線方向表現(xiàn)為各向異性,垂直等高線方向表現(xiàn)為各向同性;棉花采收后表層土壤含鹽量具有明顯的連續(xù)變化,灌區(qū)內(nèi)不存在鹽土、重度鹽化土和中度鹽化土,輕度鹽化土在整個灌區(qū)占主導(dǎo)地位并廣泛分布于各子灌區(qū),非鹽化土主要分布在南部山前地區(qū)和東北局部地區(qū)。
[Abstract]:The spatial variability of surface soil salinity of drip irrigation cotton field under film in middle reaches of Manas River Basin was analyzed by using regional sampling point data combined with geostatistics and spatial simple Kriging interpolation. The results showed that the coefficient of variation of salt content in surface soil was 35.617, which showed medium intensity variability and normal distribution, and had a strong second order trend effect and a sharp change of trend influence in the middle part of irrigated area. The block gold coefficient is less than 25, which has strong spatial correlation, and its variation is mainly affected by spatial structural factors, anisotropy along the contour direction and isotropy in the vertical contour direction. The salt content of surface soil changed continuously after cotton harvest. There was no salinized soil in irrigation area, severe salinized soil and moderate salinized soil, and mild salinized soil dominated the whole irrigated area and was widely distributed in various irrigation areas. The non-salinized soil mainly distributes in the south mountain front area and the northeast part area.
【作者單位】： 石河子大學(xué)水利建筑工程學(xué)院;現(xiàn)代節(jié)水灌溉兵團(tuán)重點(diǎn)試驗室;
【基金】：NSFC-新疆聯(lián)合基金項目(U1203282) 國家自然科學(xué)基金(51669030) 石河子大學(xué)優(yōu)秀青年項目(2013ZRKXYQ17)
【分類號】：S156.4
本文編號：2317157
[Abstract]:The spatial variability of surface soil salinity of drip irrigation cotton field under film in middle reaches of Manas River Basin was analyzed by using regional sampling point data combined with geostatistics and spatial simple Kriging interpolation. The results showed that the coefficient of variation of salt content in surface soil was 35.617, which showed medium intensity variability and normal distribution, and had a strong second order trend effect and a sharp change of trend influence in the middle part of irrigated area. The block gold coefficient is less than 25, which has strong spatial correlation, and its variation is mainly affected by spatial structural factors, anisotropy along the contour direction and isotropy in the vertical contour direction. The salt content of surface soil changed continuously after cotton harvest. There was no salinized soil in irrigation area, severe salinized soil and moderate salinized soil, and mild salinized soil dominated the whole irrigated area and was widely distributed in various irrigation areas. The non-salinized soil mainly distributes in the south mountain front area and the northeast part area.
【作者單位】： 石河子大學(xué)水利建筑工程學(xué)院;現(xiàn)代節(jié)水灌溉兵團(tuán)重點(diǎn)試驗室;
【基金】：NSFC-新疆聯(lián)合基金項目(U1203282) 國家自然科學(xué)基金(51669030) 石河子大學(xué)優(yōu)秀青年項目(2013ZRKXYQ17)
【分類號】：S156.4
【相似文獻(xiàn)】
相關(guān)期刊論文 前4條
1 王雅琴;劉洪光;朱擁軍;;重鹽堿地膜下滴灌土壤鹽分運(yùn)移規(guī)律研究[J];灌溉排水學(xué)報;2010年03期
2 劉新永,田長彥,呂昭智;膜下滴灌風(fēng)沙土鹽分變化及分布特點(diǎn)[J];干旱區(qū)研究;2005年02期
3 弋鵬飛;虎膽·吐馬爾白;吳爭光;王一民;張金珠;;棉田膜下滴灌年限對土壤鹽分累積的影響研究[J];水土保持研究;2010年05期
4 ;[J];;年期
相關(guān)博士學(xué)位論文 前1條
1 齊廣平;膜下滴灌條件下鹽堿地根—水—鹽耦合機(jī)理研究[D];甘肅農(nóng)業(yè)大學(xué);2008年
相關(guān)碩士學(xué)位論文 前3條
1 朱海清;北疆膜下滴灌棉田土壤水鹽運(yùn)移規(guī)律研究[D];新疆農(nóng)業(yè)大學(xué);2016年
2 鄭余;基于水分調(diào)控的鹽堿旱地生產(chǎn)適宜性研究[D];東北農(nóng)業(yè)大學(xué);2013年
3 高巍;栽培及灌溉措施對黑鈣土性狀及生產(chǎn)力的影響[D];東北農(nóng)業(yè)大學(xué);2014年
，本文編號：2317157
本文鏈接：http://sikaile.net/kejilunwen/nykj/2317157.html
最近更新
教材專著
