Crops ›› 2016, Vol. 32 ›› Issue (1): 120-124.doi: 10.16035/j.issn.1001-7283.2016.01.022

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Effects of Combined Application of N and P Fertilizer on the Yield and Quality of Avena sativa cv. Qingyin No.1

Wei Wei,La Ba,Yang Wencai,Baima Gaweng,Zhou Juanjuan   

  1. Institute of Pratacultural Science,Tibet Academy of Agricultural and Animal Husbandry Sciences,Lhasa 850009,Tibet,China
  • Received:2015-09-04 Revised:2015-11-18 Online:2016-02-15 Published:2018-08-25
  • Contact: Ba La

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Abstract:

To explore the N,P fertilizer demand and its impact on yield and quality of Avena sativa cv. Qingyin No.1,the experiment was carried in Sibu village Maizhokunggar county of Tibet with the altitude of 4 300m. The results showed that planting oats could mature in this area;growth period lasted 114~124d;N,P fertilizer and their interaction significantly influenced the yield,plant height and nutrient content;in the same P level,hay yield,plant height of milk-ripe stage and crude protein appeared first increased back decreased trend with N increasing;yield of combined application of N (pure N) 75kg/hm 2,P (P2O5) 60kg/hm 2 was 11 573kg/hm 2,more than control (no fertilization) by 4 718kg/hm 2,and got the highest net income;crude fat,acid detergent fiber and neutral detergent fiber content reduced to varying degrees with N increasing. N 75kg/hm 2,P2O5 60kg/hm 2 was treated as the recommended application rate of oats planting in this area.

Key words: Tibet, Avena sativa cv. Qingyin No.1, Nitrogen, Phosphorus, Nutritional quality

Table 1

Soil physical properties of experimented field"

全氮(g/kg)
Total nitrogen		 碱解氮(mg/kg)
Alkali-hydrolyzable nitrogen		 全磷(g/kg)
Total phosphorus		 速效磷(mg/kg)
Available phosphorus		 全钾(g/kg)
Total potassium		 速效钾(mg/kg)
Available potassium		 pH 有机质(g/kg)
Organic matter
2.1 216.0 0.09 32.4 23.4 124 7.7 47.2

Table 2

Experiment design of combined application of N and P fertilizer kg/hm2"

处理
Treatment		 氮肥
N rate		 磷肥
P2O5 rate		 处理
Treatment		 氮肥
N rate		 磷肥
P2O5 rate
N0P0 0 0 N2P0 75 0
N0P1 0 30 N2P1 75 30
N0P2 0 60 N2P2 75 60
N0P3 0 90 N2P3 75 90
N1P0 50 0 N3P0 100 0
N1P1 50 30 N3P1 100 30
N1P2 50 60 N1P2 100 60
N1P3 50 90 N1P3 100 90

Table 3

Effects of N and P fertilizer on oats growth characteristics"

处理Treatment P0 P1 P2 P3 平均值Mean
干草产量Hay yield（g/m2）
N0 685.5±62.7 cA 679.0±58.3bA 690.3±59.1cA 698.9±72.9cA 688.4
N1 736.3±67.6cB 740.5±52.5bB 947.4±74.2bA 847.4±69.5bAB 817.9
N2 926.3±86.9bB 1 126.7±96.9aA 1 157.3±102.8aA 1 019.3±99.7aAB 1 057.4
N3 1 054.2±72.4aA 1 091.4±85.9aA 931.7±56.8bB 1 004.8±86.4aAB 1 020.5
平均值Mean 805.6 909.4 931.7 892.6
乳熟期植株平均高度Mean plant height of milk-ripe stage（cm）
N0 120.6±7.8bA 125.1±7.6cA 120.9±7.0cA 120.6±9.5bA 121.8
N1 124.6±9.6bB 129.8±8.4cAB 133.9±13.4bA 138.5±8.0aB 131.7
N2 135.1±9.7aA 149.8±9.2aA 149.4±12.2aA 143.6±13.0aA 144.5
N3 136.6±8.5aAB 140.4±9.0bA 138.7±8.8bA 137.5±10.6aB 138.3
平均值Mean 129.2 136.3 135.7 135.1
茎/叶 Stem/leaf ratio
N0 7.14 6.91 8.02 8.35 7.61
N1 6.75 6.48 6.75 7.64 6.91
N2 5.99 6.72 6.48 6.43 6.41
N3 6.30 6.42 5.67 6.49 6.22
平均值Mean 6.55 6.63 6.73 7.22

Table 4

Variation of primary nutritional ingredient under different fertilization treatments of Avena sativa cv. Qingyin No.1 %"

处理Treatment P0 P1 P2 P3 平均值Mean
粗蛋白质 Crude protein
N0 11.63±0.52bAB 9.85±0.58cC 10.65±0.60bBC 12.72±0.85bA 10.21
N1 12.98±0.55aA 11.46±0.84bB 13.47±0.77aA 14.06±0.30aA 12.99
N2 14.14±0.64aB 15.68±0.87aA 14.04±0.96aB 13.61±0.49abB 14.37
N3 13.24±0.84aAB 14.37±0.96aA 11.99±0.79bB 10.37±0.39cC 12.49
平均值Mean 13.00 13.34 12.53 12.69
粗脂肪 Crude fat
N0 2.79±0.06aB 2.86±0.07aB 3.50±0.06aA 2.55±0.08bC 2.93
N1 2.55±0.10bB 2.66±0.07bB 2.62±0.07bB 3.15±0.07aA 2.75
N2 2.41±0.07aA 2.73±0.06bA 2.52±0.08bA 2.26±0.04cB 2.57
N3 1.49±0.06cC 1.53±0.07cC 1.79±0.08cB 2.51±0.07bA 1.83
平均值Mean 2.31 2.39 2.61 2.62
酸性洗涤纤维 Acid detergent fiber
N0 40.85±0.31aAB 40.27±1.19abB 41.76±1.21aAB 42.44±1.02aA 41.33
N1 41.66±1.07aA 41.30±0.77aA 40.81±1.25aA 40.26±1.27bcA 41.01
N2 39.00±0.57bB 39.07±0.73bcB 40.82±1.30aAB 41.84±1.02abA 40.18
N3 39.01±0.28bB 36.93±0.52cC 41.41±0.46aA 39.29±0.80cB 39.16
平均值Mean 40.13 39.39 41.19 40.96
中性洗涤纤维 Neutral detergent fiber
N0 60.34±0.81aB 59.31±1.06abB 61.06±1.39aB 63.32±0.53aA 61.01
N1 57.36±1.00bC 60.14±1.04aAB 58.50±1.10bBC 61.65±0.86aA 59.41
N2 56.05±0.51bC 58.54±1.37abB 57.42±0.73bBC 61.73±1.41aA 58.44
N3 53.20±0.99cB 57.71±0.15bA 57.47±0.73bA 58.42±0.88bA 56.70
平均值Mean 56.74 58.93 58.61 61.28

"

处理
Treatment		 干草产量收益
Income		 肥料投入
Fertilizer inputs		 种子投入
Seeds inputs		 其他投入
Other inputs		 净收益
Net income
N0P0 15 081.0 0 2 250 5 600 7 231.0
N0P1 14 938.0 225.0 2 250 6 000 6 463.0
N0P2 15 186.6 450.0 2 250 6 000 6 486.6
N0P3 15 375.8 675.0 2 250 6 000 6 450.8
N1P0 16 198.6 212.3 2 250 6 000 7 736.3
N1P1 16 291.0 437.3 2 250 6 000 7 603.7
N1P2 20 842.8 662.3 2 250 6 000 11 930.5
N1P3 18 642.8 887.3 2 250 6 000 9 505.5
N2P0 20 378.6 318.5 2 250 6 000 11 810.1
N2P1 24 787.4 543.5 2 250 6 000 15 993.9
N2P2 25 460.6 768.5 2 250 6 000 16 442.1
N2P3 22 424.6 993.5 2 250 6 000 13 181.1
N3P0 23 192.4 423.2 2 250 6 000 14 519.2
N3P1 24 010.8 648.2 2 250 6 000 15 112.6
N3P2 20 497.4 873.2 2 250 6 000 11 374.2
N3P3 22 105.6 1 098.2 2 250 6 000 12 757.4
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