The Effects Of Fertilizes On The Production Of Xinnong-1 Bermudagrass

The experiments had been carried out in Xinnong-1bermudagrass seed-production field of san-ping experiment field of Xinjiang Agricultural University. Through applicating nitrogen, phosphorus and potassium separately or cooperation or applicating in different periods, the effects of fertilizes on the seed yields and seed yield factors of Xinnong-1bermudagrass had been studied ,The result indicated:(1)It could improve the coverage of Xinnong-1bermudagrass by fertilizing Nitrogen solely, the coverage could be improved 10%. But applicating Phosphor and Potassium solely,the improvement of coverage was not significant compared with CK.When fertilizing Nitrogen,Phosphor and Potassium cooperatedly, the coverage was increased obviously and correlated with Nitrogen quantity, the coverage had been improved 12%;when fertilizing Xinnong-1bermudagrass in different period, it has no significant effects on coverage.(2) It had a great significant effects on the tress of Xinnong-1bermudagrass by fertilizing, When fertilizing Nitrogen,Phosphor and Potassium solely, the effects of treatments with Nitrogen were obvious . The sequence of the effect on tress was Nitrogen>Phosphor≥Potassium . The sequence of the effect on reproductive tillers was N3>N2>P2>P3≥K3. When fertilizing Nitrogen ,Phosphor and Potassium cooperatedly,tress and reproduction tillers were higher 31.20%～51.78% and 54.54%～98.21% than CK. With the N100-P₂O₅80-K₂O160㎏ /hm² , the quantity of tress and reproduction tillers was the highest ,could reach 1161.16 entries/m²,813.83 entries/m²;When fertilizing in different period, the effects of Phosphate ammonium 150kg/hm² was better in spring , the reproduction tillers were higher 65.34% than CK. With nitrogen 150kg/hm² in autumn , the reproduction tillers were higher 49.71% than CK.the tress is improved 49.71% than CK.(3) Fertilizing had a great significant effects on the seed yield and seed composing factors by increasing spike-lets/reproductive tiller,seed and improves the rate of yield,thousand seed weight. When fertilizing Nitrogen 100kg/hm²,Phosphor100kg/hm² and Potassium150kg/hm² solely,the yield of bermudergrass were 294.3 kg/hm²,234.3kg/hm²,296.2kg/hm²and higher 27.64%～49.74% than CK. Among the theatments of Nitrogen,Phosphor and Potassium cooperatedly, the treatments with 100kg/hm²N-80kg/hm²P₂O₅-160kg/hm²K₂O was the best, the yield was 517.7 kg/hm², higher 138% than CK. When fertilizing in spring, the effects of Phosphate ammonium 150kg/hm² was best and the yield was 336.40㎏/hm², 70.07%. above than CK .When fertilizing Potassium dihydrogen phosphate in autumn, the yield was 316.00 kg/hm² and higher 53.23% than CK.(4)The effects were different on the yield of bermudergrass in applicating nitrogen, phosphorus and potassium solely or cooperatedly or in different periods, When fertilizing Nitrogen,Phosphor and Potassium cooperate,the yield had been improved greatly, better than applicating solely, and nitrogen applicated in spring was better than in autumn.(5) When fertilizing Nitrogen solely, the appropriate quantity was 10g/ m², if the quantity was high than 10g/ m², on the contrary ,the yield of bermudergrass would decrease.