【作者】 石凤翎； 田青松； 玉涛；

【Author】 Shi Fengling~1 Tian Qingsong~2 Yu tao3 (1 College of Ecology and Environmental,Inner Mongolia Agriculture university,Huhhot 010019; 2 Grassland Research Institute of Chinese Academy of Agricultural Sciences Huhhot 010010; 3 Animal husbandry Institute of Inner Mongolia of Dongwuzhumuqin Country)

【机构】 内蒙古农业大学生态环境学院； 中国农业科学院草原研究所； 内蒙古东乌珠穆沁旗畜牧局；

【摘要】 在缘毛雀麦3个品系生长进入拔节期后,通过不同留茬高度(0～2cm、2～4cm、4～6cm)的刈割处理,对其再生特性进行了测定分析。结果表明:各品系刈割留茬高度与牧草再生速度呈显著正相关(r=0.7241,p<0.05),其中9708品系4～6 cm留茬刈割后再生速度较快,9714品系0～2cm留茬刈割后再生速度较慢;在同样刈割处理条件下,9708品系和9714品系再生分蘖数无差异(p>0.05),9701品系在第二次刈割留茬4～6cm时,再生分蘖数显著(p<0.05)高于其他2个品系;随刈割留茬高度的增加,9701和9708品系的总干草产量递增,而9714品系的总干草产量却呈递减趋势。9701和9708品系的适宜留茬高度为4～6cm,9714品系适宜留茬高度是0～2cm。更多还原

【Abstract】 In this experiment ,regeneration performance of three strains of Bromus ciliatus was an- alyzed with different stubble height (0～2 cm,2～4 cm ,4～6 cm) during the jointing period.The results showed:stubble height and regenerating speed of forage had significant positive correlation(r=0.7241, p<0.05) ,among which 4～6 cm(stubble height) of 9708 strains had faster regeneration speed and 0～2 cm(stubble height) of 9714 strains had lower regeneration speed;In same cutting treatment condition, the regeneration tillers number of 9708 and 9714 strains had no difference(p>0.05),and them of 9701 strains were higher significantly than other two strains when the second stubble height was 4-6cm; with stubble height increasing ,total dry grass yield of 9701 and 9708 strains had a progressive increase, and it of 9714 strains had a progressive decrease.The suitable stubble height of 9701 and 9708 strains was 4～6cm and it of 9714 was 0～2 cm.更多还原