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Tackling salinity in Indian vertisols for food security

机译：解决印度杂草中的盐分问题，以确保粮食安全

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摘要

Land degradation is a serious menace to food security. Salinity-related land degradation is becoming a serious challenge to food and nutritional security in developing countries. Order vertisols has problem of salinity throughout the country. The vertisols and their associates cover nearly 257 m ha of the earth’s surface, out of which about 72 m ha occurs in India1. This shows that nearly 22% of the total geographical area of the country is occupied by vertisols. In the central region of India, known as the Deccan Plateau, the soils are derived from weathered basalts mixed to some extent with detritus from other rocks. In other areas, particularly in the south, soils are also derived from basic metamorphic rocks and calcareous clays. Similarly, in the western region, these are derived from marine alluvium that accounts for nearly 19.6 m ha. Out of this about 1.12 m ha is affected by salinity and waterlogging problems2. These soils are generally deep to very deep, heavytextured with clay content varying from 40% to 70%. Further, these are also low in organic carbon content, high in cation exchange capacity, slight to moderate in soil reaction and are generally calcareous in nature.
机译：土地退化严重威胁着粮食安全。与盐有关的土地退化正成为发展中国家对粮食和营养安全的严重挑战。斑鳞鱼在全国都有盐碱化问题。松石及其伴生覆盖地球表面近257 m公顷，其中印度约有72 m公顷1。这表明该国总地理区域中有近22％被松树占据。在印度中部地区，称为德干高原（Deccan Plateau），土壤是从风化玄武岩中提取出来的，在某种程度上与来自其他岩石的碎屑混合。在其他地区，尤其是南部地区，土壤也源自碱性变质岩和钙质粘土。同样，在西部地区，这些物质来自海洋冲积层，占近19.6百万公顷。其中约1.12 m公顷受盐度和涝渍问题的影响2。这些土壤通常很深，很深，质地较重，粘土含量从40％到70％不等。此外，它们的有机碳含量也低，阳离子交换容量高，土壤反应轻微至中等，并且通常是钙质的。

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