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Challenges of soil quality of Indian soils vis-á-vis food security

机译:印度土壤对粮食安全的土壤质量挑战

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Soil quality (SQ) is the capacity of a specific kind of a soil to function, within natural and managed ecosystem boundaries, to sustain plant and animal productivity, maintain or enhance water and air quality, and support human health and habitation1.In the mid-sixties due to introduction of dwarf varieties, which need high inputs in terms of fertilizers, water and pesticides increased agricultural production but discriminate and imbalanced use of fertilizer, deteriorated inherent capacity of the soil to supply plant nutrients. It examines spatial and temporal variations induced by land-use policy or management. Soil organic carbon (SOC) is the most reliable, versatile and easily assessable indicator, encompassing the interactive effect of severalfactors. Plataeuing or decreasing trend of crop yields at current levels of management indicates declining soil health (SH). Erosion, drought and desertification, irrigation induced salinity and sodicity, paradigm shift in land use, nutrient depletion and intensive cultivation are the causes of SH deterioration. Erratic rainfall and exploitation of land, water and vegetation resources by the ever increasing human and livestock populations further accentuate the problems of SH. Increasing salinity, residual carbonate, alkalinity and contamination of surface and groundwater through heavy metals, nitrates, fluoride and arsenic are the reflection of deteriorating SH.
机译:土壤质量(SQ)是一种特定类型的土壤在自然和可管理的生态系统边界内发挥功能,维持动植物生产力,维持或增强水和空气质量以及支持人类健康和居住的能力1。 -由于引进了矮化品种,六十年代需要大量投入肥料,水和农药,从而增加了农业产量,但歧视和不平衡地使用了肥料,使土壤固有的植物养分供应能力下降。它研究了土地利用政策或管理引起的时空变化。土壤有机碳(SOC)是最可靠,用途最广泛且易于评估的指标,涵盖了多种因素的相互作用。在目前的管理水平下,农作物产量呈下降趋势或下降趋势表明土壤健康状况正在下降。侵蚀,干旱和荒漠化,灌溉引起的盐度和盐度,土地利用的范式转移,养分消耗和集约化耕作是SH恶化的原因。不断增加的人类和牲畜种群造成的降雨不足以及土地,水和植被资源的开发利用,进一步加剧了上海的问题。盐度,残留碳酸盐,碱度以及重金属,硝酸盐,氟化物和砷对地表水和地下水的污染不断增加,反映出SH的恶化。

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