脱硫石膏与有机物料配施对河套灌区土壤改良及向日葵生长的影响<sub><sup>①</sup></sub>

高惠敏; 王相平; 屈忠义; 杨劲松; 姚荣江

引用本文:	高惠敏,王相平,屈忠义,等.脱硫石膏与有机物料配施对河套灌区土壤改良及向日葵生长的影响_^①[J].灌溉排水学报,0,():-.
	GAO Hui-min,WANG Xiang-ping,QU Zhong-yi,et al.脱硫石膏与有机物料配施对河套灌区土壤改良及向日葵生长的影响_^①[J].灌溉排水学报,0,():-.

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脱硫石膏与有机物料配施对河套灌区土壤改良及向日葵生长的影响_^①
高惠敏¹, 王相平^1,2, 屈忠义², 杨劲松¹, 姚荣江¹
1.中国科学院南京土壤研究所/土壤与农业可持续发展国家重点实验室;2.内蒙古农业大学土木与水利工程学院

摘要:

【目的】探讨脱硫石膏与有机物料配施对河套灌区盐碱地的改良效果及向日葵生长的影响。【方法】采用田间小区试验的方法,试验设置对照(CK)、脱硫石膏(S)单施与脱硫石膏和腐殖酸(SF)、脱硫石膏和黄腐酸(SH)配施4个处理,分别于种植前和收获后采集0-40 cm土样测定土壤盐分和pH值,作物生育期测定作物生长指标,收获时测定作物产量。【结果】在0-40 cm土层中,三种改良剂呈现出不同程度的降盐效果,其中SF处理降盐效果最好,0-20 cm和20-40 cm土层中分别较CK处理降低52.84%、23.15%；S处理降低pH效果最好,较CK组pH降低0.23个单位,其次是SH处理,较CK组降低0.19个单位；SF处理对向日葵产量增产效果最好,较对照增加51.63%。【结论】施用不同改良剂均对土壤改良及向日葵生长有一定的积极效果,其中施用SF改良剂在降盐和向日葵增产效果方面均较为显著,是河套灌区中重度盐碱区较为适用的盐碱改良剂。

关键词: 腐殖酸;黄腐酸;土壤改良;盐碱地;向日葵产量

DOI：

分类号:S156.4

基金项目:：国家重点研发计划项目课题“河套平原盐碱地形成机理与盐碱障碍生态调控机制”(2016YFC0501301)和“盐碱地治理的材料选择与装备和调理剂研发”(2016YFC0501405)资助

Effect of desulfurization gypsum combined with organic materials on soil improvement and sunflower growth in hetao irrigation area

GAO Hui-min¹, WANG Xiang-ping¹, QU Zhong-yi², YANG Jing-song¹, Yao Rong-jiang¹

1.State Key Laboratory of Soil and Sustainable Agriculture,Institute of Soil Science,Chinese Academy of Science;2.College of civil and water conservancy engineering, Inner Mongolia agricultural university

Abstract:

【Objective】To investigate the effect of desulphurization gypsum and organic material application on soil improvement and sunflower growth in hetao irrigated area.【Method】Control treatment(CK), single application of desulphurized gypsum (S), combined application of desulphurized gypsum and humic acid (SF) and combined application of desulphurized gypsum and fulcrum acid (SH) were tested by field experiment. Soil samples were collected from 0-40 cm soil depth to analyze soil salt content and pH value before plant sowing and after crop harvest. Plant growth indexes were measured during crop growing period and grain yield was measured at harvest time.【Results】The results showed that at 0-40 cm soil depth, the three kinds of soil amendments showed different degrees in salt-reducing effect, among which SF treatment had the best salt-inhibiting effect, which was 52.84% and 23.15% lower than CK treatment at the 0-20 cm and 20-40 cm soil layer, respectively. S treatment had the best pH reduction effect, and the pH was 0.23 units lower than that of CK treatment, followed by SH treatment, which was 0.19 units lower than that of CK treatment. SF treatment significantly improved grain yield, which was 51.63% more than that of control.【Conclusion】The application of different improvers had a certain positive effects on soil improvement and sunflower growth, among which the SF improver significantly decreased soil salt content and improved grain yield., which was the most suitable salt and alkali improver in the middle and heavy saline-alkali areas in hetao irrigation area.

Key words: Humic acid; Fulvic acid ; Soil improvement; Saline-alkali soil; Sunflower yield