Crops ›› 2018, Vol. 34 ›› Issue (4): 138-142.doi: 10.16035/j.issn.1001-7283.2018.04.023

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Effects of Different Nutrient Combinations on Plant Production and Nitrogen, Phosphorus and Potassium Utilization Characteristics in Waxy Sorghum

Gao Jie1,Li Qingfeng1,Peng Qiu1,Jiao Xiaoyan2,Wang Jinsong2   

  1. 1 Institute of Upland Food Crops, Guizhou Academy of Agricultural Sciences, Guiyang 550006, Guizhou, China
    2 Institute of Agricultural Environment and Resources, Shanxi Academy of Agricultural Sciences, Taiyuan 030031, Shanxi, China
  • Received:2018-03-06 Revised:2018-06-14 Online:2018-08-20 Published:2018-08-23

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Abstract:

The waxy sorghum cultivar Qiangao 8 was used as the research object. Plant production and nitrogen utilization characteristics were studied under different nutrient combinations of treatments. The results showed that the yield and total dry matter accumulation of waxy sorghum increased with all treatments than those without fertilization. NPK treatment was the highest one, of which yield and total dry matter accumulation were up to 5 972.25kg/hm 2 and 18 076.81kg/hm 2, increased by 16.93% and 24.84%, respectively compared with the control followed by the FP treatment. The total accumulation of nitrogen, phosphorus and potassium in the waxy sorghum plants were the highest under the NPK treatment, which were significantly different from the control, increased by 32.09%, 22.96% and 27.13% respectively. Nitrogen, phosphorus and potassium utilization efficiency of waxy sorghum presented tendency of K>N>P at mature stage. Nitrogen and phosphorus use efficiency in NPK treatment was the highest, potassium utilization efficiency in FP treatment was the highest. Correlation between yield and total dry matter accumulation of waxy sorghum was significantly positive. Phosphorus and potassium accumulation among yield and dry matter accumulation of waxy sorghum presented a significant positive correlation. Under these basic fertility conditions, the factors that restrict the output of waxy sorghum were phosphorus and potassium.

Key words: Waxy sorghum, Yield, Nutrient accumulation, Nutrient utilization efficiency

Table 1

Effects of different fertilization treatments on yield, TDMA of waxy sorghum kg/hm2"

处理Treatment 产量Yield 干物质积累量TDMA
CK 4 961.14c 14 479.93c
FP 5 863.92ab 16 877.66ab
NPK 5 972.25a 18 076.81a
PK 5 194.47bc 15 525.38b
NK 5 611.14abc 15 678.34ab
NP 5 816.70ab 16 492.43ab

Table 2

Effects of different fertilization treatments on yield components and output-input ratio of waxy sorghum"

处理
Treatment		 穗长(cm)
Panicle
length		 穗粒重(g)
Grain weight
per panicle		 千粒重(g)
1000-grain
weight		 产投比
Output-input
ratio
CK 33.56a 59.80a 23.13b /
FP 35.22a 70.33a 25.33a 1.73
NPK 36.78a 70.60a 26.00a 3.73
PK 35.22a 66.60a 24.97ab 1.15
NK 36.11a 66.40a 25.20a 3.37
NP 36.22a 65.00a 25.00ab 5.86

Table 3

Effects of different fertilization treatments on total N, P, K accumulation of waxy sorghum kg/hm2"

处理
Treatment		 氮素积累总量
Total N accumulation		 磷素积累总量
Total P accumulation		 钾素积累总量
Total K accumulation
CK 175.19b 27.76b 173.98b
FP 214.91ab 32.16ab 213.43ab
NPK 231.42a 34.13a 221.19a
PK 195.36b 27.97b 199.74b
NK 176.43ab 28.22b 208.44b
NP 201.10ab 32.12ab 211.59b

Table 4

Effects of different fertilization treatments on N, P, K utilization parameters of waxy sorghum"

指标
Parameter		 养分种类
Nutrient		 处理Treatment
FP NPK PK NK NP
利用效率Utility efficiency (%) N 21.18 24.99 / 0.55 11.52
P2O5 4.90 19.49 0.66 / 13.34
K2O 105.20 75.83 41.37 55.35 /
农艺效率Agronomy efficiency (kg/kg DM) N 12.79 15.99 / 4.65 8.94
P2O5 26.64 110.00 36.65 / 61.54
K2O 63.94 57.78 19.25 16.79 /
农学效率Agronomic efficiency (kg/kg) N 4.81 4.49 / 2.89 3.80
P2O5 10.03 30.92 7.14 / 26.16
K2O 24.07 16.24 3.75 10.44 /
偏生产力Partial productivity (kg/kg) N 31.27 26.54 / 24.94 25.85
P2O5 65.15 182.64 158.85 / 177.88
K2O 156.37 95.94 83.45 90.14 /

Table 5

The relationship among yield, TDMA and total N, P, K accumulation of waxy sorghum"

指标Index 产量Yield 干物质积累总量
TDMA		 氮素积累总量
Total N accumulation		 磷素积累总量
Total P accumulation		 钾素积累总量
Total K accumulation
产量Yield 1 / / / /
TDMA 0.668** 1 / / /
Total N accumulation 0.346 0.467 1 / /
Total P accumulation 0.544* 0.793** 0.320 1 /
Total K accumulation 0.471* 0.567* 0.281 0.386 1
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