在盐胁迫下，由CaCO3基生物过滤器合成的超吸收性聚合物能否改善土壤和植物的可用水以及作物生长？

IF 2.3 4区农林科学 Q1 AGRONOMY

Archives of Agronomy and Soil Science Pub Date : 2023-07-21 DOI:10.1080/03650340.2023.2237899

José Lucas Martins Melo, J. P. Andrade Feitosa, J. C. A. Mota, Carlos Tadeu dos Santos Dias, C. F. de Lacerda, R. Simmons, M. Costa

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引用次数: 0

摘要

在利用微咸灌溉水的旱地农业地区使用高吸水性聚合物(sap)是增加植物有效水分(AW)的一种策略。然而，在盐度条件下，sap的保水性可能受到不利影响。与常规SAP (C-SAP)相比，含有碳酸钙的SAP (Ca-SAP)被认为具有更强的抗性，并在盐水条件下提供更多的植物AW。本研究通过2个重复试验，对电导率分别为0.0、0.5、1.0、2.0和4.0 dS m−1的灌溉水对3个处理(Ca-SAP、C-SAP和对照)生菜的影响进行了评价。与对照相比，两种SAP处理平均增加了0.16 m3 m−3的AW。与C-SAP (0.13 m3 m - 3)相比，Ca-SAP随盐度的降低(0.07 m3 m - 3)更低。Ca-SAP处理的生菜鲜重(g株−1)为22.9，高于C-SAP处理(16.4)，但与对照(20.6)无显著差异。随着水盐度的增加，生菜新鲜生物量在Ca-SAP中高于C-SAP，最高可达2 dS m−1，与对照无显著差异。Ca-SAP受盐的影响比C-SAP小，尽管它的使用并没有像预期的那样有利于盐条件下的生菜生长。

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Can a superabsorbent polymer synthesised a CaCO3 based biofiller improve soil and plant available water and crop growth under salt stress?

ABSTRACT The use of superabsorbent polymers (SAPs) in dryland agricultural areas utilizing brackish irrigation water is a strategy to increase plant available water (AW). However, water retention by SAPs may be adversely affected under salinity. SAP containing calcium carbonate (Ca-SAP) is considered to be more resistant and provide more plant AW under saline conditions compared to conventional SAP (C-SAP) and to control. This research investigated two replicated lettuce trials to evaluate three treatments (Ca-SAP, C-SAP and control) subjected to irrigation water with electrical conductivities of 0.0, 0.5, 1.0, 2.0 and 4.0 dS m−1. Both SAP treatments increased AW by an average of 0.16 m3 m−3 as compared to the control. Decrease in AW with salinity was lower in Ca-SAP (0.07 m3 m−3) as compared with C-SAP (0.13 m3 m−3). Lettuce fresh weight (g plant−1) was higher for Ca-SAP (22.9) as compared to C-SAP (16.4), however, did not differ from control (20.6). As water salinity increased, lettuce fresh biomass was higher in Ca-SAP as compared to C-SAP up to 2 dS m−1 with no significant differences from control. The Ca-SAP is less affected by salts than the C-SAP, although its use did not benefit lettuce growth under saline conditions as expected.

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来源期刊

Archives of Agronomy and Soil Science AGRONOMY-SOIL SCIENCE

CiteScore

5.50

自引率

4.20%

发文量

107

期刊介绍： rchives of Agronomy and Soil Science is a well-established journal that has been in publication for over fifty years. The Journal publishes papers over the entire range of agronomy and soil science. Manuscripts involved in developing and testing hypotheses to understand casual relationships in the following areas: plant nutrition fertilizers manure soil tillage soil biotechnology and ecophysiology amelioration irrigation and drainage plant production on arable and grass land agroclimatology landscape formation and environmental management in rural regions management of natural and created wetland ecosystems bio-geochemical processes soil-plant-microbe interactions and rhizosphere processes soil morphology, classification, monitoring, heterogeneity and scales reuse of waste waters and biosolids of agri-industrial origin in soil are especially encouraged. As well as original contributions, the Journal also publishes current reviews.