Comprehensive study on saline-alkali soil amelioration with sediment of irrigation area in northeast China

Zhao, Yuyan; Zhang, Zeyu; Li, Zhenghe; Yang, Binghan; Li, Bing; Tang, Xiaodan; Lai, Yawen

doi:10.1016/j.arabjc.2023.104608

Cited by 12 publications

(5 citation statements)

References 30 publications

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“…At the same time, varieties that are highly adapted to pH environment changes can allocate more dry matter to the root system, promote root development, and achieve a higher root/shoot ratio ( Fig 1 ), laying a solid foundation for the growth of later crops. Because China’s soil shows the distribution characteristics of ’southern acid and northern alkali’ [ 53 , 54 ], the effect of rhizosphere pH on crops varies among different cultivars, so the response of southern varieties to rhizosphere pH should also be considered in future experiments. The test materials are all northern varieties, which is also the deficiency of this test.…”

Section: Discussionmentioning

confidence: 99%

Responses of root characteristics and nitrogen absorption and assimilation to different pH gradients of winter wheat at seedling stage

Shi,

Wang,

Wang

et al. 2023

PLoS ONE

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Nitrogen (N) and rhizosphere pH are the two main factors restricting the growth of winter wheat (Triticum aestivum L.) in North China Plain. Soil nutrient availability is affected by soil acidity and alkalinity. In order to understand the effect of rhizosphere pH value on wheat nitrogen metabolism and the response of wheat growth to pH value at seedling stage, winter wheat varieties ‘Aikang 58’ (AK58) and ‘Bainong 4199’ (BN4199) were tested in hydroponics under three pH treatments (pH = 4.0, 6.5, and 9.0). The results showed that the accumulation of dry matter in root and above ground under pH 4.0 and pH 9.0 treatments was lower than that under pH 6.5 treatments, and the root/shoot ratio increased with the increase of pH value. Regardless of pH value, ‘BN4199’ had higher root dry weight, root length, root surface area, root activity and root tip than ‘AK58’. Therefore, wheat that is tolerant to extreme pH is able to adapt to the acid-base environment by changing root characteristics. At pH 4.0, the net H+ outflow rate of wheat roots was significantly lower than that of the control group, and the net NO3− flux of wheat roots was also low. The net H+ outflow occurred at pH 6.5 and 9.0, and at the same time, the net NO3− flux of roots also increased, and both increased with the increase of pH. The activity of nitrate reductase (NR) in stem of pH 9.0 treatment was significantly higher than that of other treatments, while the activity of glutamine synthetase (GS) in root and stem of pH 6.5 treatment was significantly higher than that of other treatments. Under pH 4.0 and pH 9.0 treatments, the activities of NR and GS in ‘BN4199’ were higher than those in ‘AK58’, The root respiration of ‘BN4199’ was significantly higher than that of ‘AK58’ under pH 4.0 and pH 9.0 treatment, and ‘BN4199’ had higher NO3− net flux, key enzyme activity of root nitrogen metabolism and root respiration. Therefore, we believe that ‘BN4199’ has strong resistance ability to extreme pH stress, and high root/shoot ratio and strong root respiration can be used as important indicators for wheat variety screening adapted to the alkaline environment at the seedling stage.

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Section: Discussionmentioning

confidence: 99%

Responses of root characteristics and nitrogen absorption and assimilation to different pH gradients of winter wheat at seedling stage

Shi,

Wang,

Wang

et al. 2023

PLoS ONE

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“…Drought, soil pollution, and salinization are gradually weakening the productivity of traditional arable land, severely constraining the effective use of land resources and the sustainable development of agriculture [1][2][3]. Given these conditions, the comprehensive development and utilization of saline-alkali lands, which are widely distributed globally, have become viable means to unlock the potential of agriculture [4]. However, traditional physical and chemical amelioration methods for these lands, such as deep plowing, salt washing, and gypsum application, are costly, inefficient, and environmentally destructive, often leading to secondary salinization and alkalinization while consuming significant water resources [5,6].…”

Section: Introductionmentioning

confidence: 99%

The Green Development in Saline–Alkali Lands: The Evolutionary Game Framework of Small Farmers, Family Farms, and Seed Industry Enterprises

Chen,

Sun,

Wang

et al. 2024

Land

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Amid global climate change and population growth, the prevalence of saline–alkali lands significantly hampers sustainable agricultural development. This study employs theories of asymmetric information and bounded rationality to construct an evolutionary game model, analyzing the interactions among small farmers, family farms, and seed industry enterprises in the context of saline–alkali land management. It investigates the strategic choices and dynamics of these stakeholders under the influence of economic incentives and risk perceptions, with a focus on how government policies can foster green development. Utilizing Delay Differential Equations (DDEs) for simulations, this study highlights the risk of “market failure” without government intervention and underscores the need for government participation to stabilize and improve the efficiency of the green development process. The findings reveal that factors such as initial willingness to participate, the economic viability of salt-tolerant crops, seed pricing, research and development costs, and the design of incentive policies are crucial for sustainable land use. Accordingly, the paper proposes specific policy measures to enhance green development, including strengthening information dissemination and technical training, increasing the economic attractiveness of salt-tolerant crops, alleviating research and development pressures on seed companies, and optimizing economic incentives. This study provides a theoretical and policy framework for the sustainable management of saline–alkali lands, offering insights into the behavioral choices of agricultural stakeholders and supporting government strategies for agricultural and environmental protection.

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“…Therefore, clarifying the risk of phosphorus release in saline soils is of great significance for agricultural development as well as for promoting food security. In saline soils, phosphorus exists in both inorganic and organic forms, with the majority being inorganic phosphorus, which makes up 60%-80% of the overall phosphorus content in the soil ( Zhao et al., 2023 ). Soil fertility can be assessed by considering the level of phosphorus content, which is an essential indicator.…”

Section: Introductionmentioning

confidence: 99%

Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

Jiang,

Yan,

Liu

et al. 2023

Front. Plant Sci.

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IntroductionThe Songnen Plain is one of the three major saline-alkali areas in China, covering a vast area, where drought and overgrazing have exacerbated the salinization trend, and will have great potential for development if utilized rationally. Phosphorus, as one of important soil nutrients, plays a crucial role in plant growth. How to minimize its loss and migration has become a current research hotspot. The objective of the present study was to elucidate the adsorption properties of phosphorus in soils affected by salinization and to establish the correlation between the potential for phosphorus release and soil properties.MethodsA batch treatment test was conducted in this study using three soils with the various salinization degrees to examine the impact of environmental factors on the adsorption properties and potential release of phosphorus.Results and discussionIt was found that the maximum phosphorus adsorption by the three salinization soils in 0-360 minutes accounted for 86.8%-90.5% of the total adsorption capacity; the equilibrium adsorption capacity was: HS> MS> LS. In cases where the phosphorus level in the surrounding liquid is low, the three levels of salinized soils exhibited varying levels of phosphorus discharge, with the adsorbent acting as the origin of contaminants. The Pseudo-second-order model kinetics and Langmuir equation can well describe the adsorption process, and the adsorption process is spontaneous heat absorption with entropy increase. Increasing the pH led to an increase in the adsorption of phosphorus from the three salinized soils. Additionally, the adsorption was enhanced by introducing varying concentrations of Na+, Ca2+, and Al3+ to the background solution. The phosphorus eutrophication release risk (ERI) demonstrated a gradual decline as temperature increased. Correlation analysis revealed a noteworthy positive correlation between TN, TP, and ERI, as well as a significant negative correlation between CEC, K+, and ERI. Furthermore, there was a highly significant negative correlation between coarse silt and fine silt. Considering local climatic and environmental factors is crucial for controlling the adsorption capacity of phosphorus in various salinized soils, as it can unveil the mechanism of phosphorus adsorption and impact its migration and release risk.

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Comprehensive study on saline-alkali soil amelioration with sediment of irrigation area in northeast China

Cited by 12 publications

References 30 publications

Responses of root characteristics and nitrogen absorption and assimilation to different pH gradients of winter wheat at seedling stage

Responses of root characteristics and nitrogen absorption and assimilation to different pH gradients of winter wheat at seedling stage

The Green Development in Saline–Alkali Lands: The Evolutionary Game Framework of Small Farmers, Family Farms, and Seed Industry Enterprises

Phosphorus adsorption characteristics and release risk in saline soils: a case study of Songnen Plain, China

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