Crops ›› 2016, Vol. 32 ›› Issue (5): 131-134.doi: 10.16035/j.issn.1001-7283.2016.05.022

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Influence of N P K Fertilizers on Yield and Benefit of Confectionary Sunflowers in Northwest of Hebei

Bai Wei,Yang Sumei,Yin Haifeng,Jin Tao,Li Feng,Zhang Baoying,Cui Jinli   

  1. Zhangjiakou Academy of Agricultural Sciences,Zhangjiakou 075000,Hebei,China
  • Received:2016-06-17 Revised:2016-08-10 Online:2016-10-15 Published:2018-08-26

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Abstract:

In order to investigate the effects of fertilization on yield, nutrient utilization and absorption of confectionary sunflowers, field experiments were conducted in two years. Results showed that nitrogen, phosphate and potassium fertilizers have yield increasing effects on confectionary sunflowers, where in the yield increasing effect of potassium fertilizer is the highest, that of nitrogen fertilizer takes the second place, and that of phosphate fertilizer is the lowest. Their rates of increase are 11.26%, 8.45% and 7.24%, respectively. The yield increases of enable sunflower seeds through 1kg of nitrogen, phosphate and potassium fertilizers are 2.49kg, 5.10kg and 4.49kg respectively; nutrient utilization rates of nitrogen, phosphate and potassium fertilizers are 19.65%, 9.40% and 35.22% respectively; nitrogen, phosphate and potassium fertilizers required to be absorbed for producing 100kg of confectionary sunflower seeds are 5.04kg, 1.89kg and 10.05kg respectively. Potassium fertilizer is required in large amount, the amount of nitrogen fertilizer should be increased, and the amount of phosphate fertilizer is required to some extent during the planting of confectionary sunflowers.

Key words: Confectionary sunflower, Increase rate, Agronomy efficiency, Nutrient use rate, Northwest of Hebei

Table 1

Soil nutrient contents in experimental plots"

年份Year 碱解氮Alkali-hydrolyzable N(mg/kg) 速效磷Available P(mg/kg) 速效钾Available K(mg/kg) 有机质Organic matter(g/kg) pH
2011 43 30.8 175 8.7 8.3
2012 88 35.0 285 16.5 8.4

Table 2

Fertilization programs on every treatment"

处理
Treatments		 养分施用量Nutrient input(kg/hm2)
N P2O5 K2O
CK 0 0 0
NPK 150 60 120
PK 0 60 120
NK 150 0 120
NP 150 60 0

Table 3

Effects of N P K fertilizers on yields of confectionary sunflower"

项目Item 处理
Treatment		 2011 2012 平均
Mean
产量(kg/hm2) CK 3 749.55c 3 673.95c 3 711.75c
Yield NPK 4 456.95a 4 619.55a 4 538.25 a
PK 4 110.00b 4 259.25b 4 184.63 b
NK 4 126.05b 4 338.90b 4 232.48 b
NP 3 975.45b 4 183.80b 4 079.63 b
比对照增产(%) NPK 18.87 25.74 22.30
Increasing than CK PK 9.61 15.93 12.77
NK 10.04 18.10 14.07
NP 6.03 13.88 9.95
养分增产率(%) N 8.44 8.46 8.45
Increased rate P 8.02 6.47 7.24
K 12.11 10.41 11.26

Table 4

Agronomy efficiencies and fertilization income of the N P K fertilization"

项目
Item		 施肥
Fertilization		 2011 2012 平均
Mean
农学效率(kg/kg) N 2.57 2.40 2.49
Agronomy efficiency P 5.51 4.68 5.10
K 5.35 3.63 4.49
肥料效益(元/元) N 3.76 3.51 3.64
Fertilization income P 7.31 6.20 6.76
K 6.42 4.36 5.39

Table 5

Nutrient use efficiencies of the N P K fertilization"

项目
Item		 施肥
Fertilization		 2011 2012 平均
Mean
养分利用率(%) N 29.55 9.75 19.65
Nutrient use efficiency P 11.51 7.29 9.40
K 62.99 7.46 35.22
100kg子实吸收养分量(kg) N 5.23 4.85 5.04
Nutrient uptake per 100kg grain P 1.95 1.83 1.89
K 11.03 9.97 10.05

Fig.1

N uptake in various organs"

Fig.2

P uptake in various organs"

Fig.3

K uptake in various organs"

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