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首页> 外文期刊>Scientia horticulturae >Use of grape marc compost as substrate for vegetable seedlingsTI Use of grape marc compost as substrate for vegetable seedlings
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Use of grape marc compost as substrate for vegetable seedlingsTI Use of grape marc compost as substrate for vegetable seedlings

机译：葡萄渣堆肥用作蔬菜幼苗的基质TI葡萄渣堆肥用作蔬菜幼苗的基质

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An experiment was conducted to study the potential of compost made from dealcoholised grapevine marc and grape stalk (GM) as growing medium component in plug seedlings production of lettuce, tomato, pepper and melon. Four media were prepared: GM, a commercial peatmoss-based plug medium (Pt), used as control, and two GM + Pt mixtures (1:1 and 1:2, v:v). Their physico-chemical characteristics were analysed, and bioassays were carried out for the detection of their phytotoxicity and nitrogen drawdown index (NDI). Seedlings grown in a greenhouse in Seville, during spring 2007, were irrigated 5 days a week with a Hoagland solution. Each species was arranged in a randomised block design with four replications. Substrates showed no phytotoxicity or nitrogen immobilisation. Physical characteristics of GM suggested some limitations for use as growing medium in plug seedlings production (total available water content of 12.7% in GM and 25.9% in Pt), although it can be avoided by blending with other substrates and by managing irrigation. At the time of transplant lettuce seedlings showed only differences in green colour intensity measured by SPAD, which was higher in GM (20.3) that in Pt (18.7). Seedling height of pepper, melon and tomato grown in GM was on average 30% lower than that achieved in Pt. The height increased as the proportion of Pt in the substrates did so. There were also differences in dry weight and root neck diameter in tomato and melon that were lower in GM than in Pt. Both parameters improved with the proportion of Pt in the mixtures. Plants analyses showed significant differences that did vary depending on the species and the treatment, and they suggest nutrient imbalances in seedlings. These results would indicate that, under a correct irrigation and fertilisation management, GM and GM + Pt blending could be used successfully as medium component for plug production of vegetable seedlings
机译：进行了一项实验，以研究由脱醇的葡萄渣和葡萄秸秆（GM）制成的堆肥作为生菜，番茄，胡椒和甜瓜塞苗生产中生长培养基的潜力。制备了四种培养基：GM（一种基于泥炭藓的商业栓塞培养基（Pt），用作对照）和两种GM + Pt混合物（1：1和1：2，v：v）。分析了它们的理化特性，并进行了生物测定以检测其植物毒性和氮沉降指数（NDI）。 2007年春季，在塞维利亚温室中生长的幼苗每周用Hoagland溶液灌溉5天。每个物种以随机区组设计排列，重复四次。底物未显示任何植物毒性或固氮作用。 GM的物理特性表明，在塞子育苗生产中用作生长培养基有一定的局限性（GM的总有效水含量为12.7％，Pt的总有效水含量为25.9％），尽管可以通过与其他基质混合和灌溉来避免。生菜移栽时，生菜幼苗仅显示出通过SPAD测量的绿色强度差异，GM（20.3）高于Pt（18.7）。转基因作物上种植的辣椒，甜瓜和番茄的苗高平均比白菜低30％。高度随着基板中Pt的比例增加而增加。番茄和甜瓜的干重和根颈直径的差异在转基因小麦中也低于在铂中。两种参数均随混合物中Pt的比例提高。植物分析显示出显着差异，且确实有所差异，具体取决于物种和处理方式，并且它们表明幼苗中的营养失衡。这些结果表明，在正确的灌溉和施肥管理下，GM和GM + Pt掺混可以成功地用作蔬菜幼苗的栓塞生产的培养基成分。

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