Agronomic performance, carbon storage and nitrogen utilisation of long-term organic and conventional stockless arable systems in Mediterranean area

被引：28
作者：
Migliorini, Paola [1 ]
Moschini, Valentina [2 ]
Tittarelli, Fabio [3 ]
Ciaccia, Corrado [3 ]
Benedettelli, Stefano [2 ]
Vazzana, Concetta [2 ]
Canali, Stefano [3 ]
机构：
[1] Univ Gastron Sci, I-12060 Bra, Cuneo, Italy
[2] Univ Florence, Dept Plant Soil & Environm Sci, I-50144 Florence, Italy
[3] Ctr Studio Relaz Tra Pianta & Suolo, Consiglio Ric & Sperimentaz Agr, I-00184 Rome, Italy
来源：
EUROPEAN JOURNAL OF AGRONOMY | 2014年 / 52卷
关键词：
Organic farming; Long term field experiment; Nitrogen balance and efficiency; Soil carbon sequestration; FARMING SYSTEMS; NUTRIENT MANAGEMENT; BIOGAS DIGESTION; CROPPING SYSTEMS; SOIL FERTILITY; CROPS; PRODUCTIVITY; BUDGETS; QUALITY; MANURE;
D O I：
10.1016/j.eja.2013.09.017
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
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. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：138 / 145
页数：8
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