Use of flyash and biogas slurry for improving wheat yield and physical properties of soil
Use of flyash and biogas slurry for improving wheat yield and physical properties of soil
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DOI：
10.1007/s10661-005-2021-x
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发表时间：
2005-08-01
影响因子：
3
通讯作者：
Tomar, RK
中科院分区：
文献类型：
--
作者：
Garg, RN;Pathak, H;Tomar, RK
这项研究探讨了能源生产副产品的潜在用途，即，(i)燃煤发电产生的飞灰和（ii）农业废物处理产生的沼气浆，作为农业营养源。这些残留物大量存在，其处置是环境的主要问题。由于这两种残留物都含有大量的植物营养素，将其用作土壤改良剂可能会提供一个有希望的双赢机会，既可提高作物产量，又可防止废物处置对环境造成的不利影响。通过田间试验，研究了粉煤灰和沼液对土壤物理性质及小麦生长和产量的影响。施用粉煤灰和沼液的小麦叶面积指数、根长密度和籽粒产量均高于未施用粉煤灰和沼液的小麦。两种改良剂均降低了土壤容重，提高了土壤饱和导水率和持水能力。研究表明，粉煤灰和沼液可作为土壤改良剂，在增产和改良土壤方面获得短期和长期效益。
This study explores the potential use of by-products of energy production, i.e., (i) flyash from coal-powered electricity generation and (ii) biogas slurry from agricultural waste treatment, as nutrient sources in agriculture. These residues are available in large amounts and their disposal is a major concern for the environment. As both residues contain considerable amounts of plant nutrients, their use as soil amendment may offer a promising win-win opportunity to improve crop production and, at the same time, preventing adverse environmental impacts of waste disposal. Effect of flyash and biogas slurry on soil physical properties and growth and yield of wheat (Triticum aestivum) was studied in a field experiment. Leaf area index, root length density and grain yield of wheat were higher in plots amended with flyash or biogas slurry compared to unamended plots. Both types of amendments reduced bulk density, and increased saturated hydraulic conductivity and moisture retention capacity of soil. The study showed that flyash and biogas slurry should be used as soil amendments for obtaining short-term and long-term benefits in terms of production increments and soil amelioration.