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首页> 外文期刊>Research Journal of Agronomy >Effect of Planting Density and Prunings on Yam Bean Tuber Yields and Quality
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Effect of Planting Density and Prunings on Yam Bean Tuber Yields and Quality

机译：种植密度和修剪对山药块茎产量和品质的影响

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摘要

In an effort to elevate yam bean (Pachyrhizus erosus (L.) Urban) from a garden crop to a commercial crop the optimal planting density and pruning management were studied in relation to yield and tuber quality under field conditions at CATIE, Turrialba, Costa Rica for varying accessions. For each accession the number of tubers decreased with decreasing plant density, the average weight of the tubers increased and the total fresh weight yields were maintained. This confirms that by manipulating the plant density the tuber quality can be targeted to a specific consumer demand. Reproductive pruning did in contrast not affect the total number of tubers ha 1 but accessions differed (p<0.05) in their total yield responses although in all cases did the tubers increase in weight on average. This positive yield effect of reproductive pruning may potentially be used to increase yield and in areas where smaller sized tubers are preferred, to obtain the desirable tuber size at high plant densities at an earlier date thereby advancing the onset of the marketing season.
机译：为了将山药（Pachyrhizus erosus（L.）Urban）从园林作物提升为商业作物，研究了在哥斯达黎加图里亚尔巴（CATIE）田间条件下，与产量和块茎质量相关的最佳种植密度和修剪管理用于各种加入。对于每个登录，块茎的数量随着植物密度的降低而减少，块茎的平均重量增加，总鲜重保持不变。这证实了通过控制植物密度，块茎质量可以满足特定的消费者需求。相比之下，生殖修剪并没有影响块茎ha 1的总数，但是种质的总产量响应有所不同（p <0.05），尽管在所有情况下，块茎的平均重量均增加了。生殖修剪的这种积极的增产效应可潜在地用于增加产量，并在更优选块茎较小的地区，以便在较早的日期以高植物密度获得所需的块茎尺寸，从而加快销售季节的开始。

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