施肥量、刈割期对纳罗克非洲狗尾草株高、分蘖数的影响

Fertilization quantity and cutting time＇s effect on plant height and fillering number of Setaria sphacetata cv.Narok

本试验探讨了施肥和刈割2项栽培技术对纳罗克非洲狗尾草（Setaria sphacelata cv．Narok）株高、分蘖数的影响。结果表明：施肥后，狗尾草随着施肥量增加，其株高、分蘖数明显增加；在225kg／hm^2、450kg／hm^2、675kg／hm^2 3个施肥水平中，施肥量以450kg／hm^2效果最好；冬季刈割，对狗尾草的分蘖比春季刈割效果好；在冬季刈割狗尾草，还可以为来年狗尾草的生长贮存更多的营养物质，促进狗尾草的正常生长。

The experiment explored the effect of two cultivation techniques of fertilization and cutting on plant height and tillering number of Setaria sphacetata cv.Narok. The results showed that after applying fertilizer, the plant height and tiUering number of Setaria sphacetata cv.Narok obviously increased with the fertilizer added. In the three fertilization levels of 225 kg/hm^2, 450 kg/hm^2 and 675 kg/hm^2, the level of 450 kg/hm^2 had the best effect. Compare to cutting in spring, Setaria sphacetata cv.Narok had more tiUering number when cutting in winter,and it can store more nutrition which can promote the normal growth.