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首页> 外文期刊>Soil Research >Effect of composted mulch application on soil and wine grape potassium status
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Effect of composted mulch application on soil and wine grape potassium status

机译：堆肥覆盖对土壤和酿酒葡萄钾状况的影响

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摘要

Oversupply of potassium (K) to grape vines can result in high grape berry K and pH, leading to difficulty in wine making and low wine quality. There is concern that application of mulch to grape vines may increase K supply and the associated risks. The effect of composted mulch from green wastes was investigated in a field trial involving six vineyards in New South Wales on soils commonly used for viticulture production in Australia, over three seasons (2006-08). Significant increases in extractable soil K were detected as a result of mulch application. Higher berry K and pH were also observed due to the mulch treatments, with the changes dependent on season and mulch rate. Increases in berry K were significantly related to the higher soil exchangeable K. The mean increase in berry K due to a mulch rate of 153 m(3)/ha was 123 mg/kg. The mean increase in berry pH was 0.02 units observed in two seasons. Application of mulch can increase berry K and pH, but the changes are small compared with variations observed among vineyard sites and between seasons.
机译：葡萄藤中钾（K）的过量供应会导致葡萄浆果K和pH升高，从而导致酿酒困难和葡萄酒质量下降。令人担忧的是，将覆盖物应用于葡萄藤可能会增加钾的供应和相关风险。在三个季节内，在新南威尔士州的六个葡萄园在澳大利亚通常用于葡萄栽培生产的土壤上进行了田间试验，研究了绿色废物堆肥覆盖物的影响。覆盖施用后，可提取的土壤钾显着增加。由于覆盖处理，还观察到较高的浆果K和pH，其变化取决于季节和覆盖率。浆果K的增加与较高的土壤可交换K显着相关。由于覆盖率153 m（3）/ ha，浆果K的平均增加为123 mg / kg。在两个季节中观察到的浆果pH值平均增加0.02个单位。覆盖物的使用可以增加浆果的K和pH值，但与葡萄园站点之间和季节之间的变化相比，变化很小。

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