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如何结合土壤和植物指标来管理葡萄园中的肥?

Sylvain Vrignon-Brenas¹, Bénédicte Fontez², Denis Caboulet³

¹LEPSE, Univ Montpellier, INRAE, Institut Agro, Montpellier, France.

|November 25, 2024

概括

葡萄藤 (N) 管理对于葡萄酒的质量至关重要. 两个关键指标,SPAD和酵母吸收 (YAN),可以在整个生长季节有效地指导N受精策略.

科学领域:

葡萄种植和葡萄酒学葡萄种植和葡萄酒学
植物营养植物营养
土壤科学土壤科学

背景情况:

葡萄藤 (N) 营养显著影响果的发育,芳香成分和酒潜力.
有效的肥管理在葡萄园中是必不可少的,因为适度的需求和对葡萄品质的深刻影响.

研究的目的:

开发一种在葡萄园中进行有信息的 (N) 施肥的方法,适用于生长季节之间和生长季节期间.
识别和验证坚固的土壤和植物指标,以监测葡萄藤N.状态.

主要方法:

在四年内,在一个由五个法国葡萄园组成的网络中,在各种环境条件,作物管理和N肥制度中,量化指标的稳定性.
利用线性模型和多重因子分析来评估N处理和环境因素对N指标敏感性的影响.

主要成果:

产量,土壤矿物,SPAD (叶绿素度),叶子N含量和YAN (酵母吸收) 都对四年后的N受精敏感.
SPAD和YAN指标有效地区分了不同的N受精策略,包括N供应的时间和形式.
指标响应显示,小气候条件或文化习惯的影响最小,突出显示它们的稳定性.

结论:

SPAD (测量自经验) 和YAN (测量在收获) 是战术和长期葡萄藤N授精决策的有价值指标.
早期的SPAD测量可以告知葡萄园管理有关影响N营养的其他做法的相互作用,从而允许以后的YAN校正.
将SPAD和YAN与非破坏性成像技术相结合,有望提高葡萄种植中的和矿物质监测.

关键词:

叶绿素测量仪可以测量叶绿素.葡萄藤是葡萄树中的一种.矿物质是一种矿物质.管理的管理.有机有机有机有机有机有机有机有机有机有机有机有机有机有机有机有机有机有机有酵母可以同化的.

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