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本文以环渤海区域河北省黄骅市中捷农场的盐碱荒地为研究对象,采用台田-浅池土地利用新模式,同时在台田底部设计了4种脱盐工程处理,通过分析2年各底部排盐措施的排盐效果,得出结论:不同底部排盐措施处理下,经过两年种植后的台田土壤表层、耕层以及1m土体的脱盐情况以底部弧形覆膜+埋设排盐暗管排盐措施最为明显,1m土体脱盐率达35.6%;底部苇把+棉花秆覆盖处理也有较好脱盐效果,脱盐率为25.6%;底部弧形覆膜+耕层地秸秆覆盖处理1m土体脱盐率为20.4%;这3种处理具有相同脱盐特征,均为表层>1m土体>耕作层;底部铺设苇板处理和对照处理土壤盐分未降反增,且增加情况为耕层>1m土体>表层。初步证明修建台田时,台田底部采用弧形覆膜+埋设排盐暗管的排盐措施可有效加快台田土壤排盐速度,达到改良盐碱荒地土壤目的。
This paper takes the saline-alkali wasteland of Zhongjie Farm in Huanghua City of Hebei Province as the research object, adopts the new model of land use in Taitian-Shallow pool and treats 4 desalination projects at the bottom of Taita, The results of the salt discharge of the salt discharge measures concluded that under the treatment of different salt discharges at the bottom, after two years of planting, the surface soil of the terrace, the topsoil and the desalination of 1m soil were covered with the bottom arc-shaped coating and the drainage salt The most obvious method is to drain the salt in the underground pipe, the desalination rate of 1m soil reaches 35.6%; the desilting rate of the reed + cotton stalks also has a good desalination effect, the desalination rate is 25.6%; the bottom arc covered film + straw mulching 1m The soil desalination rate was 20.4%. The three treatments had the same desalination characteristics, all of which were surface layer> 1m soil> tillage layer. At the bottom, reed plate treatment and control treatment did not decrease or increase the salinity of soil, 1m soil> surface. Preliminary evidence that the construction of Taita, the bottom of Taita using arc-covered membrane + buried salt drains of salt drainage measures can effectively speed up soil salt draining speed, reaching the goal of improving soil salinity wasteland.