高壟滴灌條件下鹽堿地土壤鹽分再分布研究
發(fā)布時間:2018-05-08 07:58
本文選題:高壟 + 滴灌 ; 參考:《節(jié)水灌溉》2017年09期
【摘要】:針對引黃灌區(qū)水資源短缺和土壤鹽漬化兩大資源環(huán)境問題,以節(jié)水防鹽為目標(biāo),通過田間試驗,將能提高地溫、增加土壤透氣性的高壟與能提高水資源利用率和利用效率、將局部土壤鹽分淡化的滴灌相結(jié)合,探究高壟滴灌條件下鹽漬化土壤的水鹽運動規(guī)律,結(jié)果表明,在中度鹽堿化土地上,滴灌可以有效地減小高壟上的鹽分,使鹽分聚集在壟中央;在重度鹽堿化土地上,滴灌可以有效降低壟的全鹽量并將壟中鹽分淋洗在壟溝中。歸納出適應(yīng)性鹽堿地利用技術(shù)和作物種植模式,為引黃灌區(qū)鹽堿地改良利用提供技術(shù)支持。
[Abstract]:In view of the two problems of water resources shortage and soil salinization in Yellow River Irrigation area, water saving and salt control were taken as the goal, and field experiments were conducted to improve the soil temperature, increase the soil permeability, and improve the utilization ratio and utilization efficiency of water resources. By combining drip irrigation with desalination of local soil salt, the water and salt movement of salinized soil under the condition of high ridge drip irrigation was studied. The results showed that drip irrigation could effectively reduce the salt content on high ridge in moderate salinized soil. In heavy salinized land, drip irrigation can effectively reduce the total salt content of ridges and wash salt from ridges in furrows. The adaptive saline-alkali land utilization technology and crop planting pattern were summarized to provide technical support for the improvement and utilization of saline-alkali land in Yellow River Irrigation area.
【作者單位】: 寧夏大學(xué)土木與水利工程學(xué)院;寧夏農(nóng)林科學(xué)院農(nóng)業(yè)資源與環(huán)境研究所;寧夏節(jié)水灌溉與水資源調(diào)控工程技術(shù)研究中心;旱區(qū)現(xiàn)代農(nóng)業(yè)水資源高效利用教育部工程研究中心;
【基金】:國家科技支撐計劃課題(2013BAC02B05) 國家自然科學(xué)基金項目(51169021,51569022) 寧夏大學(xué)研究生創(chuàng)新項目(GIP201634)
【分類號】:S156.4;S275.6
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