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首页> 外文期刊>European Journal of Agronomy >Agronomic performance, carbon storage and nitrogen utilisation of long-term organic and conventional stockless arable systems in Mediterranean area.
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Agronomic performance, carbon storage and nitrogen utilisation of long-term organic and conventional stockless arable systems in Mediterranean area.

机译：地中海地区长期有机和常规无耕种耕作系统的农艺性能，碳储量和氮利用率。

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摘要

The Montepaldi Long Term Experiment (MOLTE) trial in central Italy has been comparing three agroecosystems with different management: two organic (Old Organic since 1992 and Young Organic since 2001) and one conventional. After sixteen years of comparison, the agronomic performance and environmental sustainability of the three agro-ecosystems were assessed. Crops grain yield, total C inputs and N budget at field level were evaluated. N use efficiency (NUE) at micro-agroecosystem level was determined. Soil samples were collected from the three agroecosystems in order to quantify soil C and N pools. Results showed comparable grain yields in the three agro-ecosystems. The conventional system showed a larger N surplus and a lower crop N use efficiency in comparison with the organic ones. Moreover, the organic systems presented a lower potential risk of N losses with respect to the conventional one. The Young Organic agro-ecosystem was the most effective in terms of long term soil C (13% higher than conventional) and the oldest organic agro-ecosystem was the most effective in terms of soil N storage (9% higher than conventional). The results obtained demonstrated that the application of the organic farming method could increase the environmental sustainability in stockless arable systems under Mediterranean type of climate.
机译：意大利中部的Montepaldi长期试验（MOLTE）试验已经比较了三种不同管理方式的农业生态系统：两种有机生态系统（1992年以来为Old Organic，2001年以来为Young Organic）和一种常规。经过十六年的比较，评估了三种农业生态系统的农艺表现和环境可持续性。评价了田间作物的谷物产量，总碳输入量和氮预算。确定了微农业生态系统水平上的氮利用效率（NUE）。从三个农业生态系统中收集了土壤样品，以便对土壤碳氮库进行量化。结果表明，在三种农业生态系统中，谷物的产量相当。与有机系统相比，常规系统显示出更大的氮过剩和较低的作物氮利用效率。此外，与常规有机体系相比，有机体系具有较低的N损失潜在风险。就长期土壤碳而言，年轻的有机农业生态系统最为有效（比常规土壤高13％），而对土壤氮的储存而言，最古老的有机农业生态系统最为有效（比常规土壤高9％）。获得的结果表明，在地中海型气候下，有机耕作方法的应用可以提高无库存耕作系统的环境可持续性。

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