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首页> 外文期刊>Indian Journal of Dryland Agricultural Research and Development >Castor [Ricinus communis (L.)] - Sorghum [Sorghum bicolor (L.)] Cropping System Productivity, Soil Chemical and Biological Fertility in Response to Conservation Agriculture and Nutrient Management Practices in Alfisols
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Castor [Ricinus communis (L.)] - Sorghum [Sorghum bicolor (L.)] Cropping System Productivity, Soil Chemical and Biological Fertility in Response to Conservation Agriculture and Nutrient Management Practices in Alfisols

机译:蓖麻[Ricinus communis(L.)]-高粱[Sorghum bicolor(L.)]种植系统的生产力,土壤化学和生物肥力,响应保护性农业和对小白菊的养分管理实践

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摘要

A fixed plot experiment was conducted in Alfisols for three years from 2010 to 2012 at Narkhoda farm of Directorate of Oilseeds Research, Hyderabad. The main objective of the study was to know the effect of conservation agriculture (minimum tillage, crop residue and cover crop) and nutrient management practices (recommended dose of fertilizers, integrated nutrient management, organic nutrient management, fertilizers based on soil test crop response and customized fertilizers) on the productivity, nutrient uptake and soil chemical and biological fertility in castor - sorghum cropping system under rainfed conditions. Conservation agriculture was found to be on par with conventional agriculture with reference to system productivity, system nutrient uptake and soil chemical and biological fertility. Among nutrient management practices, fertilizer application based on soil test crop response (STCR) significantly improved the system productivity (2717 kg/aa), system nutrient uptake (188-62-198 N:P2Os:K20kg/ha) and soil nutrient availability (224-30-430 N:P205:K20 kg/ha) which was on par with customized fertilizer. The productivity improvement with these set of treatments was 15% higher compared to that of recommended dose of fertilizer (RDF). Soil respiration (290 mg kg/d), microbial biomass C (320 mg/kg) and N (48.5 mg/kg) were significantly increased with organic nutrient management followed by integrated nutrient management.
机译:从2010年至2012年,在海得拉巴油料种子研究局的Narkhoda农场对Alfisols进行了为期三年的固定样地试验。该研究的主要目的是了解保护性农业的影响(最小耕作,农作物残茬和覆盖作物)和养分管理实践(推荐的肥料剂量,综合养分管理,有机养分管理,基于土壤测试作物反应的肥料和定制肥料)在雨育条件下对蓖麻-高粱种植系统的生产力,养分吸收以及土壤化学和生物肥力的影响。在系统生产力,系统养分吸收以及土壤化学和生物肥力方面,发现保护性农业与常规农业相当。在养分管理实践中,基于土壤试验作物响应(STCR)的肥料施用显着提高了系统生产力(2717 kg / aa),系统养分吸收(188-62-198 N:P2Os:K20kg / ha)和土壤养分利用率( 224-30-430 N:P205:K20 kg / ha),与定制肥料相当。与推荐的肥料剂量(RDF)相比,使用这组处理方法的生产率提高了15%。通过有机养分管理和综合养分管理,土壤呼吸(290 mg kg / d),微生物生物量碳(320 mg / kg)和氮(48.5 mg / kg)显着增加。

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