利用HYDRUS-2D评价不同土壤管理对玉米种植盐分控制的效果

IF 1.4 Q4 SOIL SCIENCE Soil Science Annual Pub Date : 2023-07-15 DOI:10.37501/soilsa/169659
Mahdiye Latifi, Hadi Ramezani Etedali, Masoud Soltani
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引用次数: 0

摘要

连续灌溉导致土壤盐碱化,降低土壤肥力。本研究的目的是寻找防止土壤盐碱化的方法。利用HYDRUS-2D模拟了玉米种植和带灌条件下15 cm堆高的土柱。为了评估不同情况下,包括胶带位置(堆/沟)、堆高(滴灌和地灌)、覆盖和灌溉水盐度对不同时间框架根区盐分积累的影响。结果表明,1年、5年和10年后,沟渠布施比堆施能使土壤主要盐度(0.65 dS m -1)分别降低8%、8%和10%。此外,在滴灌和地灌中,高度叠加对控制盐度都不是很有效。因为,评估土壤柱在0、10、15和20 cm堆高的情况下,盐度在短期和长期情景之间的差异可以忽略不计(根据方差分析检验)。使用地膜是控制盐分的有效方法,因为它可以减少蒸发。覆盖1年、5年和10年后,土壤含盐量比不覆盖分别提高了34.5%、42.8%和50%。0.7、1.7和2.7 dS m -1不同盐度水灌溉土壤,10年后土壤盐度增加了77.5%、83.5%和84.2%。
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Evaluation of the different soil management effects on salinity control in maize cropping by HYDRUS-2D
Continuous irrigation causes soil salinity and decreases soil fertility. The purpose of this study is to fi nd methods that can prevent soil salinity. Thus, a soil column with 15 cm stack height, under maize cultivation and tape irrigation has been simulated by HYDRUS–2D. In order to assess the effects of different scenarios including tape location (stack/ditch), stack height (in drip and surface irrigation), using mulch and irrigation water salinity on salinity accumulation in root zone in different time frames. The results show placing tapes on ditch will increase soil primarily salinity (0.65 dS m –1 ) 8%, 8% and 10% lower than placing it on the stack after 1, 5 and 10 years. Also, height stack is not very effective for controlling salinity in both drip and surface irrigation. Because, assessing soil columns with 0, 10, 15 and 20 cm stack height showed neglectable difference between salinity both in short term and long–term scenarios (according to variance analysis test). Using mulch is an effective way to control salinity because it can decrease evaporation. After 1, 5 and 10 years of irrigation in mulch presence, salinity increased 34.5%, 42.8% and 50% lower than without mulch scenario. Also, irrigating soil by water of different salinities including 0.7, 1.7 and 2.7 dS m –1 showed 77.5%, 83.5% and 84.2% increase in salinity after 10 years ago.
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来源期刊
Soil Science Annual
Soil Science Annual SOIL SCIENCE-
CiteScore
2.50
自引率
6.70%
发文量
0
审稿时长
29 weeks
期刊介绍: Soil Science Annual journal is a continuation of the “Roczniki Gleboznawcze” – the journal of the Polish Society of Soil Science first published in 1950. Soil Science Annual is a quarterly devoted to a broad spectrum of issues relating to the soil environment. From 2012, the journal is published in the open access system by the Sciendo (De Gruyter).
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