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首页> 外文期刊>Acta Horticulturae >Effects of reuse of organic substrate on growth and yield of strawberry in soilless culture.
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Effects of reuse of organic substrate on growth and yield of strawberry in soilless culture.

机译：无土栽培中有机基质的再利用对草莓生长和产量的影响。

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Plants of short day strawberry (Fragaria x ananassa Duch. 'Akihime') were grown in a raised bed filled with peatmoss, perlite and expanded rice hull in the ratio of 3:4:3 (v:v:v). This substrate was either newly prepared (new substrate) or already used in one, two or three previous cultures (1-year used, 2-year used, and 3-year used substrate). The reused substrate was treated with steam sterilization. When the substrate was used in succession, the bulk density and water capacity gradually increased from 170 kg m-3 to 220 kg m-3 and from 38.9 to 57.3% (v/v), respectively. But, the air capacity linearly decreased from 44.3 to 20.9% (v/v). These results were probably due to decomposition of expanded rice hull. The easily absorbable P, K, Ca and Mg were higher in the reused substrates than in the new substrate. Plant height and leaf size in the reused substrates did not differ with those of the new substrate. As the substrate was used more than once and up to three times, marketable yield greatly increased from 544 to 609 g per plant. However, fruit yield began to decrease on the 3-year used substrate. Fruit qualities were not affected by the reused substrate. Total expense of renewing substrate every year amounted to 3,041,000 Korean Won per 10 a. With all extra materials and labors for disinfection and rearrangement, the expenses on the 1-year, 2-year and 3-year used substrate were equivalent to 67%, 55% and 50% of that of the new substrate.
机译：短日草莓（Fragaria x ananassa Duch。'Akihime'）的植物在高架床中生长，该高床装有泥炭，珍珠岩和膨化稻壳，比例为3：4：3（v：v：v）。该底物是新制备的（新底物），或者已经在一种，两种或三种以前的培养物中使用过（使用1年，使用2年和使用3年的底物）。重复使用的基材经过蒸汽灭菌处理。当连续使用基材时，堆积密度和水容量分别从170 kg m-3增加到220 kg m-3，从38.9％增加到57.3％（v / v）。但是，空气容量从44.3％（v / v）线性下降。这些结果可能是由于膨化稻壳的分解。在重复使用的基材中，易吸收的P，K，Ca和Mg高于新基材。重用基质中的植物高度和叶片大小与新基质没有差异。由于使用的基质不止一次且多达三遍，每株植物的可销售产量从544 g大大增加到609 g。但是，使用3年的基质上的水果产量开始下降。水果品质不受重复使用底物的影响。每年更新基板的总费用为每10 a 3,041,000韩元。加上所有用于消毒和重新布置的额外材料和人工，在1年，2年和3年使用的基板上的费用分别相当于新基板的67％，55％和50％。

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