施尿素对无芒隐子草草坪生长特性的影响

doi:10.11686/cyxb20140617

摘要/Abstract

摘要： 对不同施尿素量(0,2,5,8 g/m²)下无芒隐子草草坪生长期内色泽、株高、叶宽、叶片相对含水量、植株全氮及绿色期的研究表明,施尿素可显著提高草坪植株和叶片的生长速率,提高植株全氮含量,降低叶片相对含水量的下降速度,改善草坪色泽,并且可显著延长草坪的绿期(P<0.05)。在尿素用量上,5和8 g/m²处理下的草坪质量显著高于0和2 g/m²,主要表现为草坪色泽生长季内都保持在6分左右,并至少使草坪绿期延长18 d。但与0 g/m²相比,8 g/m²处理增加草坪修剪次数6次,提高草坪管理成本1倍以上;而5 g/m²处理只增加草坪修剪次数2次,可减轻草坪管理强度,减少管理成本。因此,5 g/m²处理的效果最佳。

Abstract: The effects of different urea application rates (0, 2, 5 and 8 g/m²) on turf color, plant height, leaf width, relative leaf water content, nitrogen content and green period of Cleistogenes songorica turfgrass were studied. Urea fertilizer promoted the growth rate of plants and leaves, increased N and relative leaf water content, improved turf color, enhanced turf quality and prolonged the green period significantly. Turf quality under 5 and 8 g/m² treatments was significantly greater than that under 0 and 2 g/m² treatments, and the main contributing factors were improved turf color during the growth period and extension of the green period for 18 d at least. Compared with the 0 g/m² treatment, the 8 g/m² treatment increased the cut grass 6 times, which more than doubled lawn management costs while the 5 g/m² treatment only increased the cut grass 2 times, which would reduce costs of lawn management. Hence, the optimum rate of urea fertilizer was 5 g/m² for this turfgrass species.

中图分类号:

S812.4

李欣勇,王彦荣,贾存智. 施尿素对无芒隐子草草坪生长特性的影响[J]. 草业学报, 2014, 23(6): 136-141.

LI Xin-yong,WANG Yan-rong,JIA Cun-zhi. Effect of urea fertilizer on growth and performance of Cleistogenes songorica turfgrass[J]. Acta Prataculturae Sinica, 2014, 23(6): 136-141.

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