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盐碱地枸杞间作不同作物的土壤水盐变化及盐平衡
张玉龙, 姜同轩, 杨涛, 张凤华
石河子大学 新疆兵团绿洲生态农业重点实验室, 新疆 石河子 832003
摘要:
[目的]研究盐碱地枸杞不同间作模式下土壤水盐的变化,为盐碱地改良和利用提供一定科学依据。[方法]设置枸杞间作苜蓿、枸杞间作油菜、枸杞间作碱蓬、枸杞单作4种处理,分析不同间作模式下土壤水盐变化以及土壤盐平衡。[结果]各处理土壤含水率,在0—60 cm土层呈现出:间作苜蓿 > 间作油菜 > 间作碱蓬 > 对照,依次为13.67%,13.02%,12.22%,11.86%,在60—100 cm土层变化不明显;土壤盐分含量在0—40 cm土层中与对照相比,间作苜蓿、间作油菜、间作碱蓬分别下降6.91,5.82,2.21g/kg,在40—100 cm土层土壤盐分分别下降3.20,2.93,0.95g/kg;0—100 cm土层,枸杞间作苜蓿、间作油菜、间作碱蓬及对照土壤脱盐率依次为40.38%,26.52%,9.00%,-60.66%。除对照外,其他处理的土壤盐分均呈脱盐状态。[结论]盐碱地枸杞不同间作模式均能有效增加土壤含水率,降低土壤盐分,达到改良盐碱地的效果。
关键词:  干旱地区  盐碱地  间作模式  水盐运移  盐平衡
DOI:10.13961/j.cnki.stbctb.2019.03.008
分类号:S157.4+2;S156
基金项目:国家重点研发计划课题“玛纳斯节水农田治理模式及棉花林果产业示范”(2016YFC0501406);兵团科技攻关与成果转化项目“绿洲盐渍化土壤生态修复关键技术与示范”(2016AD022)
Soil Water and Salt Changes and Salt Balance in Different Crops of Lycium Chinense Intercropping in Saline-alkali Soil
Zhang Yulong, Jiang Tongxuan, Yang Tao, Zhang Fenghua
Key Laboratory for Oasis Ecological Agriculture of Xinjiang Construction Crops, Shihezi University, Shihezi, Xinjiang 832003, China
Abstract:
[Objective] The changes of soil water and salt under different intercropping patterns of Lycium chinense in saline-alkali soil were researched in order to provide scientific basis for the improvement and utilization of saline-alkali land.[Methods] Four treatments of L. chinense intercropping with Medicago sativa, Brassica napus, Suaeda glauca and L. chinense monoculture were set up to analyze soil water and salt changes and soil salt balance under different intercropping modes.[Results] The soil moisture content of each treatment in the 0-60 cm soil layer showed that the intercropping M. sativa(13.67%) > intercropping B. napus (13.02%)> intercropping S. glauca(12.22%) > control(11.86%), and it was not obvious in the 60-100 cm soil layer. Compared with the control, the soil salinity of intercropping M. sativa, intercropping B. napus and intercropping S. glauca decreased by 6.91, 5.82 and 2.21 g/kg in the 0-40 cm soil layer, respectively. Soil desalination rates of intercropping M. sativa, intercropping B. napus and intercropping S. glauca and CK were 40.38%, 26.52%, 9.00% and -60.66% in 0-100 cm soil layer, respectively. Except for control, the soil of other treatments was all desalinated.[Conclusion] Different intercropping patterns of saline-alkali mantle can effectively increase soil water content, reduce soil salinity, and improve saline-alkali land.
Key words:  drought area  saline-alkali soil  intercropping pattern  soil water and salt movement  salt balance