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首页> 外文期刊>Journal of Plant Nutrition >Impact of Eucalyptus biochar application to upland rice-sugarcane cropping systems on enzyme activities and nitrous oxide emissions of soil at sugarcane harvest under incubation experiment
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Impact of Eucalyptus biochar application to upland rice-sugarcane cropping systems on enzyme activities and nitrous oxide emissions of soil at sugarcane harvest under incubation experiment

机译：在孵化实验下甘蔗收获桉树生物炭施用对乌克兰稻 - 甘蔗种植系统对甘蔗收获的酶活性和氧化二氮氧化物排放

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摘要

This research studied the effect of biochar addition before upland rice planting, followed by sugarcane cropping, on soil fertility (nitrogen mineralization, beta-glucosidase and urease activities), and mitigating greenhouse gases emission at sugarcane harvest. An incubation experiment was designed utilizing soil samples taken from a sugarcane field at final harvest with treatments, (i) Control, with no biochar or fertilizer application to upland rice (ii) CF, with fertilizer application at recommended rates; (iii) BC1, with biochar addition at the rate of 3.125 Mg ha(-1) + CF; (iv) BC2, with biochar addition at the rate of 6.25 Mg ha(-1) + CF. Results showed that, at the last sampling dates, soil enzyme activities of the biochar treatments were significantly greater than those of the control treatment. The lowest cumulative carbon dioxide and nitrous oxide emission was observed in the BC2 treatment. Thus, the BC2 treatment could increase both soil fertility and mitigate global warming.
机译：本研究研究了旱稻种植前的生物炭加入，其次是甘蔗种植，对土壤肥力（氮矿化，β-葡糖苷酶和脲酶活性），以及减轻甘蔗收获的温室气体排放。孵育实验设计利用在最终收获的甘蔗场中采用的土壤样品，（i）对照，对旱稻（II）CF没有生物炭或肥料应用，以推荐的速率应用肥料应用; （iii）BC1，BIOCHAR以3.125 mg HA（-1）+ CF的速率加入; （iv）BC2，Biochar以6.25mg ha（-1）+ cf的速率加入。结果表明，在上次采样日期，生物炭处理的土壤酶活性明显大于对照治疗的影响。在BC2处理中观察到最低累积二氧化碳和氧化二氮排放。因此，BC2治疗可以增加土壤肥力和减轻全球变暖。

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