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首页> 外文期刊>Journal of Agronomy and Crop Science/Zeitschrift fur acker-und pflanzenbau >PermVeg: A Model to Design Crop Sequences for Permanent Vegetable Production Systems in the Red River Delta, Vietnam
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PermVeg: A Model to Design Crop Sequences for Permanent Vegetable Production Systems in the Red River Delta, Vietnam

机译：PermVeg：用于设计越南红河三角洲永久性蔬菜生产系统的农作物序列的模型

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摘要

The constraints in current vegetable production systems in the Red River Delta, Vietnam, in which vegetables are rotated with flooded rice, called for the design of alternative systems of permanent vegetable production. The practical model, PermVeg, was developed to generate vegetable crop sequences for permanent vegetable production, as based on a set of rules and restrictions. Permanent vegetable production systems were designed based on the following five scenarios: (i) increased profit, (ii) reduced labour requirement, (iii) decreased costs of pesticide use, (iv) improved crop biodiversity and (v) selected crops with low-perishable products. PermVeg showed that theoretically all selected crop sequences in the different alternative systems increased farmers' income compared to the traditional system. The system with the highest profitability increased profit per hectare per day by a factor of three as compared to the traditional system. Labour requirement in days per hectare per day in a crop sequence also increased in all systems. Except for the system with low costs of pesticide use, permanent vegetable production systems had higher pesticide costs than the traditional, vegetable-flooded rice crop sequence. Given the model outcomes, permanent vegetable production systems can be an option to improve farmers' income, to provide labour opportunities, and, in the case of the high crop biodiversity system, to contribute to the development of sustainable production systems. The PermVeg model can act as a practical tool to rapidly explore crop sequence options and to help farmers' decision-making
机译：越南红河三角洲目前的蔬菜生产系统中的限制因素是，其中的蔬菜随洪水淹没，因此需要设计永久性蔬菜生产的替代系统。根据一系列规则和限制，开发了实用模型PermVeg，以生成用于永久性蔬菜生产的蔬菜作物序列。永久性蔬菜生产系统是根据以下五个方案设计的：（i）增加利润，（ii）减少劳动力需求，（iii）降低农药使用成本，（iv）改善作物生物多样性，（v）易腐产品。 PermVeg表明，从理论上讲，与传统系统相比，不同替代系统中的所有选定农作物序列均可增加农民的收入。与传统系统相比，获利能力最高的系统每天每公顷的利润增加了三倍。在所有系统中，每天在每公顷农作物中每公顷天的劳动需求也增加了。除了农药使用成本低的系统外，永久性蔬菜生产系统的农药成本要高于传统的蔬菜淹没水稻作物序列。根据模型的结果，永久性蔬菜生产系统可以作为增加农民收入，提供劳动机会的选择，并且在作物生物多样性较高的情况下，可以为可持续生产系统的发展做出贡献。 PermVeg模型可以用作快速探索农作物序列选择并帮助农民做出决策的实用工具

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