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首页> 外文期刊>Journal of environmental science and health >L-asparaginase and L-glutaminase activities in submerged rice soil amended with municipal solid waste compost and decomposed cow manure
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L-asparaginase and L-glutaminase activities in submerged rice soil amended with municipal solid waste compost and decomposed cow manure

机译：用城市固体废物堆肥和分解的牛粪修正的淹没稻田土壤中的L-天冬酰胺酶和L-谷氨酰胺酶活性

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摘要

The field study was conducted to evaluate the effect of municipal solid waste compost (MSWC) as a soil amendment on L-asparaginase (LA) and L-glutaminase (LG) activities. Experiments were conducted during the wet seasons of 1997, 1998 and 1999 on rice grown under a submerged condition, at the Agriculture Experimental Farm, Calcutta University at Baruipur, West Bengal, India. The treatments consisted of control, no input; MSWC, at 60 Kg N ha~(-1); well-decomposed cow manure (DCM), at 60 Kg N ha~(-1); MSWC (30 Kg N ha~(-1)) + Urea (U) (30 Kg N ha~(-1)); DCM (30 Kg N ha~(-1)) + U (30 Kg N ha~(-1)) and Fertilizer, (at 60:30:30 NPK kg ha~(-1)) through urea, single superphosphate and muriate of potash respectively). LA and LG activities alone and their ratio with organic-C (ratio index value, RIV), straw and grain yield were higher in DCM than MSWC-treated soils, due to higher amount of biogenic organic materials like water-soluble organic carbon, carbohydrate and mineralizable nitrogen in the former. The studied parameters were higher when urea was integrated with DCM or MSWC, compared to their single applications. The heavy metals in MSWC did not detrimentally influence the above-measured activities of soil. In the event of long term MSWC application, changes in soil quality parameters should be monitored regularly, since heavy metals once entering into soil persist over a long period.
机译：进行了现场研究，以评估作为土壤改良剂的城市固体废弃物堆肥（MSWC）对L-天冬酰胺酶（LA）和L-谷氨酰胺酶（LG）活性的影响。在1997年，1998年和1999年的潮湿季节，在印度西孟加拉邦巴鲁伊布尔的加尔各答大学农业实验农场对淹没条件下种植的水稻进行了试验。治疗包括控制，无投入； MSWC，在60 Kg N ha〜（-1）；在60 Kg N ha〜（-1）下分解良好的牛粪（DCM）; MSWC（30 Kg N ha〜（-1））+尿素（U）（30 Kg N ha〜（-1））; DCM（30 Kg N ha〜（-1））+ U（30 Kg N ha〜（-1））和肥料（通过NPK kg ha〜（-1）60:30:30）通过尿素，单过磷酸钙和分别钾肥）。由于水溶性有机碳，碳水化合物等生物有机物质的含量较高，DCM中单独的LA和LG活性及其与有机碳（比率指数，RIV），稻草和谷物产量的比率高于MSWC处理的土壤和前者中的可矿化氮。与单一应用相比，当尿素与DCM或MSWC集成时，所研究的参数更高。 MSWC中的重金属对上述土壤活动没有不利影响。如果长期使用MSWC，应定期监测土壤质量参数的变化，因为重金属一旦进入土壤就会长期存在。

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