Impact of manure and urea on the fresh yield ofDactylis glomerata after snow disaster

The impact of manure and urea on the fresh yield of Dactylis glomerata after snow disaster was studied in 2007 and 2008. The results showed that the fresh yields among 6 manure and urea treatments were significant different after 20 days snow disaster. The yields of manure treatment (30 000 kg/hm2) and urea treatments (75 kg, 175 kg, 275 kg) were significant higher than the control. The fresh yield in the treatment of manure (30 000 kg/hm2) + urea (175 kg/hm2) was the highest. And the economic fertilization formula was 30 000 kg/hm2 of manure + 75 kg/hm2 of urea.