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首页> 外文期刊>Soil Research >Effects of municipal solid waste compost, rice-straw compost and mineral fertilisers on biological and chemical properties of a saline soil and yields in a mustard-pearl millet cropping system
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Effects of municipal solid waste compost, rice-straw compost and mineral fertilisers on biological and chemical properties of a saline soil and yields in a mustard-pearl millet cropping system

机译：城市固体废弃物堆肥，稻草堆肥和矿物肥料对盐碱土粟米种植系统盐碱土生物化学特性和产量的影响

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We investigated the effects of organic amendments, municipal solid waste compost (MSWC) and rice-straw compost (RSC) with and without mineral fertilisers on biological and chemical properties of a saline soil. Field experiments were conducted for two consecutive years during 2012-14. In the first year, application of 8 t ha(-1) of MSWC + 50% of the recommended dose of fertilisers (RDF) resulted in higher microbial biomass carbon (MBC), enzyme activities, soil organic carbon (SOC), available nitrogen (N), phosphorus (P) and potassium (K) than 7 t ha(-1) of RSC + 50% RDF, after mustard (Brassica juncea) and pearl millet (Pennisetum glaucum) harvests. Combined use of 8 t ha(-1) of MSWC+ 50% RDF resulted in 47% and 54% more MBC than the unfertilised control after mustard and pearl millet harvests, respectively. Dehydrogenase activity was significantly higher with 100% RDF than the control after 2 years of the cropping cycle. Among organic amendments, MSWC was superior to RSC in terms of MBC, and activities of dehydrogenase, alkaline phosphatase and urease. SOC was significantly increased under MSWC+ 50% RDF compared with 100% RDF alone. Significant build-up of soil fertility in terms of available N, P and K was observed with RSC + 50% RDF compared with the control. During the second year of the cropping system, soil treated with RSC + 50% RDF had 14%, 17% and 9% higher N, P and K than soil treated with 100% RDF, after pearl millet harvest. The magnitude of change in soil electrical conductivity and pH was low during 2012-13; however, soil salinity decreased by 55% and 48% with MSWC+ 50% RDF and RSC + 50% RDF, respectively, relative to the control at 120 days of pearl millet growth in 2013-14. Application of MSWC + 50% RDF produced 2.5 and 2.70 t ha(-1) of mustard and pearl millet, and increased grain yield by 19% and 15%, respectively, compared with 100% RDF. Integrated use organic amendments and mineral fertiliser is recommended for promoting biological and chemical properties of saline soil in a mustard-pearl millet cropping system.
机译：我们研究了有机改良剂，城市固体废物堆肥（MSWC）和稻草堆肥（RSC）在有无矿物质肥料的情况下对盐渍土壤生物学和化学特性的影响。在2012-14年度连续两年进行了现场试验。在第一年，施用8 t ha（-1）的MSWC + 50％的推荐肥料剂量（RDF）导致较高的微生物生物量碳（MBC），酶活性，土壤有机碳（SOC），有效氮（N），磷（P）和钾（K）高于芥菜（Brassica juncea）和珍珠粟（Pennisetum glaucum）收获后的7吨公顷（-1）的RSC + 50％RDF。在芥菜和珍珠粟收获后，分别使用8 t ha（-1）的MSWC + 50％RDF导致MBC比未受精的对照分别多47％和54％。种植2年后，使用100％RDF的脱氢酶活性显着高于对照。在有机修饰物中，MSWC在MBC，脱氢酶，碱性磷酸酶和脲酶的活性方面优于RSC。与单独使用100％RDF相比，在MSWC + 50％RDF下SOC显着增加。与对照相比，RSC + 50％RDF观察到土壤有效氮，磷和钾的累积显着。在种植系统的第二年，收获小米后，经RSC + 50％RDF处理的土壤的N，P和K分别比经100％RDF处理的土壤高14％，17％和9％。在2012-13年间，土壤电导率和pH值变化幅度较小;然而，相对于2013-14年珍珠粟生长120天的对照，MSWC + 50％RDF和RSC + 50％RDF分别使土壤盐度降低了55％和48％。 MSWC + 50％RDF的施用产生了2.5和2.70 t ha（-1）的芥末和珍珠粟，与100％RDF相比，谷物产量分别提高了19％和15％。建议综合使用有机改良剂和矿物肥料，以促进芥菜-粟-小米种植系统中盐渍土的生物和化学特性。

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