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农业科学与工程前沿(英文版)
农业科学与工程前沿(英文版)

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农业科学与工程前沿(英文版)/Journal Frontiers Agricultural Science and EngineeringCSCD
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    Soils for food security

    Guangzhou WANGQichao ZHUJunling ZHANG
    213-215页

    Saline-alkali soil reclamation and utilization in China:progress and prospects

    Guangzhou WANGGang NIGu FENGHaley M.BURRILL...
    216-228页
    查看更多>>摘要:Soil salinity is a global threat to the productivity of arable land.With the impact of population growth and development of social economy in China,the area of arable land has been shrinking in recent decades and is approaching a critical threshold of 120 Mha,the minimum area for maintaining the national food security.Saline-alkaline land,as important backup reserve,has been receiving increased attention as an opportunity to expand land resources.This review first summarizes the general principles and technologies of saline soil reclamation to support plant growth,including leaching salts or blocking the rise of salts,and soil fertility enhancement to improve the buffering capacity.Then the progress in this area in China is described including the customization of technologies and practices used in different saline-alkali regions.Following the soil management strategies,the concept of selecting crops for saline soil is proposed.This encompasses halophyte planting,salt-tolerant crop breeding and the application of saline-adapted functional microorganisms to improve the adaptation of crops.Finally,the current problems and challenges are evaluate,and future research directions and prospects proposed for managing this major soil constraint.

    Mitigation strategies for soil acidification based on optimal nitrogen management

    Pengshun WANGDonghao XUPrakash LAKSHMANANYan DENG...
    229-242页
    查看更多>>摘要:Soil acidification is a serious constraint to food production worldwide.This review explores its primary causes,with a focus on the role of nitrogen fertilizer,and suggests mitigation strategies based on optimal N management.Natural acidification is determined by the leaching of weak acid mainly caused by climate and soil conditions,whereas the use of ammonium-based fertilizers,nitrate leaching and removal of base cations(BCs)by crop harvesting mostly accounts for anthropogenic acidification.In addition,low soil acid buffering capacity,mainly determined by soil parent materials and soil organic matter content,also accelerates acidification.This study proposes targeted mitigation strategies for different stages of soil acidification,which include monitoring soil carbonate content and pH of soils with pH>6.5(e.g.,calcareous soil),use of alkaline amendments for strongly acidic soils(pH<5.5)with aluminum toxicity risk to pH between 5.5 and 6.5,and decreasing acidification rates and supplementing BCs to maintain this optimal pH range,especially for soils with low acid buffering capacity.Effective mitigation involves optimizing the rate and form of N fertilizers used,regulating N transformation processes,and establishing an integrated soil-crop management system that balances acid production and soil buffering capacity.

    Impact of mechanical compaction on crop growth and sustainable agriculture

    Zijian LONGYifei WANGBaoru SUNXiaoyan TANG...
    243-252页
    查看更多>>摘要:With the development of agricultural technology to meet the growing demands of a rapidly increasing population and economic development,intensive agriculture practices have been widely adopted globally.However,this intensification has resulted in adverse consequences for soil structure due to intensified farming activities and increased usage of heavy farm machinery.Of particular concern is soil compaction,which leads to the degradation of physical,chemical and biological properties of the soil.Soil compaction negatively impacts crop growth,reduces yields and poses a significant threat to food security and the overall sustainability of agricultural systems.Recognizing these challenges,this review aims to deepen understanding of the factors contributing to soil compaction and to develop effective mitigation strategies.By doing so,it is intended to attenuate the adverse impacts of soil compaction,improve soil structure,increase crop yield and ultimately enhance the sustainability of agricultural practices.

    A review of research progress on continuous cropping obstacles

    Kunguang WANGQiaofang LUZhechao DOUZhiguang CHI...
    253-270页
    查看更多>>摘要:Due to the increasing global population and limited land resources,continuous cropping has become common.However,after a few years of continuous cropping,obstacles often arise that cause soil degeneration,decreased crop yield and quality,and increased disease incidence,resulting in significant economic losses.It is essential to understand the causes and mitigation mechanisms of continuous cropping obstacles(CCOs)and then develop appropriate methods to overcome them.This review systematically summarizes the causes and mitigation measures of soil degradation in continuous cropping through a meta-analysis.It was concluded that not all continuous cropping systems are prone to CCOs.Therefore,it is necessary to grasp the principles governing the occurrence of diseases caused by soilborne pathogens in.different cropping systems,consider plant-soil-organisms interactions as a system,scientifically regulate the physical and chemical properties of soils from a systems perspective,and then regulate the structure of microbial food webs in the soil to achieve a reduction in diseases caused by soilborne pathogens and increase crop yield ultimately.This review provides reference data and guidance for addressing this fundamental problem.

    Global black soil distribution

    Yuxin TONGMarcos E.ANGELINIYusuf YIGINIIsabel LUOTTO...
    271-281页
    查看更多>>摘要:Black soils,characterized by their thick,dark horizons enriched with organic matter,epitomize highly fertile soils.However,their fertility precipitates intense land use,engendering challenges such as soil erosion,nutrient depletion,pollution,compaction,salinization,and acidification.Notably,these soils are significant contributors to global greenhouse gas emissions,primarily due to substantial losses in soil organic carbon.Despite these challenges,black soils are pivotal for global food production.This paper delineates the implementation of digital soil mapping for the global cartography of black soils and human interference on these soils.Predominantly distributed in Eastern Europe,Central and Eastern Asia,and North and South America,black soils cover an approximate area of 725 Mha,with the Russian Federation,Kazakhstan,and China collectively have over half of this area.Agriculturally,these soils underpin significant proportions of global crop yields,producing 66%of sunflower,30%of wheat,and 26%of potato outputs.The organic carbon content in the upper 30 cm of these soils is estimated at 56 Gt.Sustainable management of black soils is imperative for ensuring food security and addressing climate change on a global scale.

    Exploring differentiated improvement strategies of cultivated land quality in China

    Wenguang CHENXiangbin KONGYubo LIAO
    282-291页
    查看更多>>摘要:Quality is the core feature of cultivated land.In the face of deteriorating cultivated land quality and growing food demand,improving cultivated land quality is a top priority for guaranteeing the sustainable use of resources and national food security.Cultivated land quality in the new era can be considered in four dimensions:suitability,contiguity,resistance and ecological stress.Cultivated land suitability in China shows a decreasing trend from east to west,cultivated land contiguity is high in the north-east and low in the south-west.In terms of cultivated land resistance,the number of strongly and weakly resistant cropping fields is small and spatially clustered.Cultivated land with ecological stress is mainly located in the northern region.Based on the current situation of cultivated land quality and the strategic needs of national high-quality development,China's future goals for improving cultivated land quality include four aspects:promoting the sustainable use of resources,improving the economic benefits of farming,coping with extreme meteorological disasters and meeting the transition of the food system.Against the backdrop of a volatile international environment and high domestic demand for food,China should guarantee a safe supply of staples,a stable supply of animal feed and a moderate supply of high-nutrient food.In the future,China should create three major food production spaces:high-standard,low-to medium-yield,and marginal cultivated land.China urgently needs to construct three paths to implement the goal of improving cultivated land quality,namely the development of high-standard cultivated land with the core of spatial optimization,resilience enhancement and scale coupling,the transformation of low-to medium-yield cultivated land with the core of obstacle elimination,tenure adjustment,ecological sustainable,and the conservation development of marginal cultivated land with a focus on sustainable use.

    A temporal framework for building up of healthy soils

    Junling ZHANGJiangzhou ZHANGYunlong ZHANGGuangzhou WANG...
    292-296页

    Soil security and global food security

    David R.MONTGOMERY
    297-302页
    查看更多>>摘要:Over the course of the postglacial period has managed to add degrade a substantial portion of the world's potential agricultural land.The soil loss and degradation that has repeatedly impacted regional societies around the world resulted from agricultural practices that increased the physical loss of soil(erosion),reduced soil organic matter,changed pH(acidification)or salinity,and disrupted or altered communities of soil life.In the coming century,as continued soil degradation threatens global food security while the global population keeps rising it is imperative that farmers develop and adopt soil-health building(regenerative)practices to solve a problem that has plagued societies throughout history.Growing evidence suggests that agricultural systems that combine cover crops,reduced tillage,and diverse crop rotations can reduce erosion,enhance soil health and rebuild soil organic matter to cultivate beneficial soil life and harvest both economic and environmental benefits.In the coming post-oil world,global food security would benefit from a global effort to promote soil restoration to help addresses the challenge of sustainably feeding the world,increase soil-based carbon sequestration,protect on-farm biodiversity and reduce off-farm water pollution.Because soil security sets a solid foundation for global food security,agricultural policies and subsidies should be reformed to encourage farmers to adopt regenerative,soil-building practices.

    Characteristics of soil quality attributes under different agroecosystems and its implications for agriculture in the Choke Mountain watershed in Ethiopia

    Demeku MESFINEngdawork ASSEFABelay SIMANE
    303-313页
    查看更多>>摘要:Awareness of how soil properties vary over agroecosystems(AES)is essential for understanding soil potentials and improving site-specific agricultural management strategies for a sustainable ecosystem.This study examined the characteristics of soil quality attributes and implications for agriculture in the Choke Mountain watershed in Ethiopia.Forty-seven composite soil samples(0-20 cm deep)were collected from lowland and valley fragmented(AES 1),midland plain with black soil(AES 2),midland plain with brown soil(AES 3),sloppy midland land(AES 4),and hilly and mountainous highlands(AES 5).Ten of 15 soil quality properties were significant(P<0.05 or 0.01),including silt,exchangeable bases,cation exchange capacity,percent base saturation,pH,organic matter,total nitrogen and available phosphorous(P)across the five AES.However,all properties were variable with coefficients of variation from 7%(total porosity)to 169%(available P)across the AES.Although AES 2 and 3 are affected by waterlogging and acidity,these two have better prospects for agriculture,but AES 1,4,and 5 are unsuitable for agriculture because of soil erosion.Therefore,appropriate and applicable soil management strategies,particularly lime application and organic fertilizer,are fundamental to reversing soil acidity and improving soil fertility.