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首页> 外文期刊>African Journal of Biotechnology >Effects of the weed density on grass yield of Alfalfa (Medicago sativa L.) in different row spacing applications
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Effects of the weed density on grass yield of Alfalfa (Medicago sativa L.) in different row spacing applications

机译：不同行距条件下杂草密度对紫花苜蓿草产量的影响

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摘要

This study, in which the effects of different row spacing applications on weed density and on grass yield of?Medicago sativa?L. were investigated, was carried out in Van-Turkey from 2006 - 2008. Randomized blocks design was adopted with three replications. Row spacing applications of 20, 30, 40, 50, 60 and 70 cm were tested. The alfalfa plant height, yield of green herbage yield, dry matter yield, crude protein rate and crude protein yield were investigated. In addition, the weed densities at different row spacing distances were determined. The highest plant heights were obtained in 40 cm row spacing application in the first year and in 20 cm row spacing application in the second year. The highest dry matter and crude protein yields were obtained in 20, 30 and 40 cm row spacings in the first year and in 20 cm row spacing applications in the second year. The most intense weed wasAlopecurus myosuroides?Huds in 2007 and?Amaranthus retroflexus?L. in 2008. The least weed density was found in 20 cm row spacing during all three before cutting periods in the first year of study and this was found in 30 cm row spacing application in first before cutting period and in 20 cm row spacing application in the second and third before cutting periods in the second year.
机译：这项研究，其中不同行距应用对紫花苜蓿杂草密度和草产量的影响。这项研究于2006年至2008年在Van-Turkey进行。采用了随机区组设计，重复了三次。测试了20、30、40、50、60和70厘米的行距应用。研究了苜蓿的株高，青草产量，干物质产量，粗蛋白率和粗蛋白率。另外，确定了在不同行距距离处的杂草密度。第一年在行距为40 cm的植物中获得最高的株高，第二年在行距为20 cm的植物中获得了最高的株高。第一年在20、30和40 cm行距中获得最高的干物质和粗蛋白产量，第二年在20 cm行距应用中获得最高的干物质和粗蛋白产量。最强的杂草是2007年的Aurocurus myosuroides？Huds和？Amaranthus retroflexus？L。在2008年。在研究的第一年中，在所有三个割草期之前的20厘米行距中发现的杂草密度最低，在第一次割草期之前在30厘米的行距施肥中发现了最小的杂草密度，第二年和第三年之前的第二年。

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