Crops ›› 2021, Vol. 37 ›› Issue (5): 140-145.doi: 10.16035/j.issn.1001-7283.2021.05.021

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Effects of Sowing Rates on Yield of Two Buckwheat Varieties in Northern Hebei

Cao Lixia(), Zhou Haitao, Zhang Xinjun, Shi Bihong, Zhang Lixia, Li Yunxia, Liu Junxin, Bai Jing, Zhao Shifeng()   

  1. Zhangjiakou Academy of Agricultural Sciences, Zhangjiakou 075000, Hebei, China
  • Received:2021-01-21 Revised:2021-04-13 Online:2021-10-15 Published:2021-10-14
  • Contact: Zhao Shifeng E-mail:hhlcx@126.com;zsf1886@163.com

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Abstract:

Split-zone design was used to analyze the agronomic characters and yield of the buckwheat variety "Jitianqiao 1" and "Jikuqiao 1" under five different sowing rates during two growing seasons in 2018-2019. The results showed that sowing rates had less effects on plant height, nodes of main stem and 1000-grain weight of "Jitianqiao 1", but had effects on branches of main stem, number of inflorescences, grain number per plant, grain weight per plant and yield. Sowing rates between 1.2×106/ha and 1.8×106/ha could achieve high yield, the most suitable sowing rate was 1.2×106/ha. Sowing rates had less effects on nodes of main stems and 1000-grain weight of "Jikuqiao 1", but had effects on plant height, branches of main stem, number of inflorescences, grain number per plant, grain weight per plant and yield. Sowing rates between 0.9×106/ha and 1.5×106/ha could achieve high yield, the most suitable sowing rate was 0.9×106/ha.

Key words: Buckwheat, Sowing rate, Yield

Table 1

Meteorological analysis of 2018 and 2019 (April-September)"

月份
Month		 气温Temperature (℃) 降水量Precipitation (mm) 日照时数Sunshine duration (h)
2018 2019 平均值
Mean		 标准差
Standard
deviation		 变异系数
Variation
coefficient		 2018 2019 平均值
Mean		 标准差
Standard
deviation		 变异系数
Variation
coefficient		 2018 2019 平均值
Mean		 标准差
Standard
deviation		 变异系数
Variation
coefficient
4 7.5 6.9 7.20 0.42 0.059 29.8 16.8 23.30 9.19 0.395 255.4 242.8 249.10 8.91 0.036
5 14.2 13.1 13.65 0.78 0.057 36.3 56.4 46.35 14.21 0.307 279.7 296.8 288.25 12.09 0.042
6 19.2 18.3 18.75 0.64 0.034 41.4 61.4 51.40 14.14 0.275 301.9 257.7 279.80 31.25 0.112
7 20.8 18.8 19.80 1.41 0.071 141.0 96.2 118.60 31.68 0.267 260.7 231.2 245.95 20.86 0.085
8 19.8 18.1 18.95 1.20 0.063 138.5 41.3 89.90 68.73 0.765 270.8 227.1 248.95 30.90 0.124
9 10.4 14.4 12.40 2.83 0.228 39.9 61.0 50.45 14.92 0.296 213.8 261.6 237.70 33.80 0.142
平均Mean 15.3 14.9 15.13 1.21 0.085 63.33 25.48 0.380 258.29 22.97 0.090
合计Total 426.9 333.1 1582.3 1517.2

Table 2

General characters of each trait under different sowing rates of 2018-2019"

品种
Variety		 年份
Year		 项目
Item		 株高
Plant height
(cm)		 主茎节数
Nodes of
main stem		 主茎分枝数
Branches of
main stem		 花序数
Number of
inflorescences		 单株粒数
Grains per
plant		 单株粒重
Grain weight
per plant (g)		 千粒重
1000-grain
weight (g)		 产量
Yield
(kg/hm2)
冀甜荞1号 2018 最大值 122.7 15.5 6.1 39.2 182.5 4.93 29.0 2032.5
Jitianqiao 1 最小值 118.7 14.5 4.2 25.3 140.1 3.33 28.2 1312.5
平均值 120.0 15.1 4.9 33.1 168.5 4.40 28.6 1749.0
标准差 1.6 0.4 0.8 5.7 17.8 0.70 0.4 315.0
变异系数 0.013 0.025 0.157 0.172 0.106 0.160 0.013 0.180
2019 最大值 115.3 15.9 5.8 46.3 205.7 5.7 28.1 2338.5
最小值 111.7 14.7 4.7 30.1 151.7 3.1 27.4 1512.0
平均值 113.9 15.4 5.1 36.5 179.6 4.1 27.8 2052.0
标准差 1.4 0.5 0.4 7.3 24.7 1.2 0.3 381.0
变异系数 0.012 0.031 0.086 0.201 0.137 0.302 0.012 0.185
冀苦荞1号 2018 最大值 164.3 22.0 5.4 54.2 408.3 7.2 17.9 2820.0
Jikuqiao 1 最小值 152.3 21.0 3.6 30.5 300.0 5.4 17.7 2179.5
平均值 157.3 21.6 4.5 41.8 344.5 5.9 17.8 2583.0
标准差 5.6 0.4 0.7 8.9 43.8 0.8 0.1 289.5
变异系数 0.036 0.018 0.159 0.214 0.127 0.128 0.006 0.112
2019 最大值 156.7 20.0 8.5 56.7 532.4 8.53 17.8 3364.5
最小值 145.7 18.9 6.3 34.5 380.1 5.73 17.0 2259.0
平均值 150.8 19.5 7.2 44.7 439.4 7.09 17.3 3037.5
标准差 4.7 0.6 0.8 8.3 60.9 1.06 0.3 480.0
变异系数 0.031 0.029 0.113 0.185 0.139 0.149 0.017 0.158

Table 3

Effects of different sowing rates of buckwheat on morphological characters in 2018 and 2019"

品种
Variety		 年份
Year		 播种量（万粒/hm2）
Sowing rate (×104/hm2)		 株高
Plant height (cm)		 主茎节数
Nodes of main stem		 主茎分枝数
Branches of main stem		 花序数
Number of inflorescence
冀甜荞1号 2018 60 118.7±1.2a 15.5±0.6a 6.1±0.6a 39.2±11.8a
Jitianqiao 1 90 119.0±2.6a 15.3±0.9a 5.3±1.1ab 36.3±3.7a
120 119.3±2.5a 15.5±0.6a 4.7±1.7ab 35.7±13.4ab
150 120.3±8.5a 15.1±1.4a 4.4±1.0b 29.3±5.1ab
180 122.7±2.3a 14.5±0.8a 4.2±0.5b 25.3±9.1b
2019 60 111.7±5.7a 15.9±0.6a 5.8±0.8a 46.3±1.3a
90 113.7±8.5a 15.6±0.9a 5.2±0.3ab 42.2±4.7ab
120 114.3±8.1a 15.6±0.6a 5.2±0.2b 31.9±8.4bc
150 114.7±5.5a 15.3±1.3a 4.8±0.4b 31.8±2.9bc
180 115.3±2.5a 14.7±0.3a 4.7±0.5b 30.1±1.1c
冀苦荞1号 2018 30 152.3±9.7c 22.0±1.0a 5.4±1.6a 54.2±6.2a
Jikuqiao 1 60 153.0±5.6c 21.8±0.5a 4.9±1.5ab 46.4±6.4ab
90 154.7±4.7bc 21.7±1.2a 4.7±1.1ab 39.7±10.1ab
120 162.3±3.5ab 21.4±0.9a 4.0±0.9ab 38.3±7.4ab
150 164.3±4.2a 21.0±1.2a 3.6±0.6b 30.5±4.3b
2019 30 145.7±8.0b 19.7±1.2a 8.5±0.6a 56.7±22.3a
60 146.3±8.5b 19.9±0.8a 7.2±1.4ab 47.2±16.5ab
90 151.7±1.5ab 20.0±0.7a 7.0±1.1ab 44.6±16.5ab
120 153.7±1.5ab 18.9±1.1a 6.9±1.3ab 40.5±16.0ab
150 156.7±5.0a 18.9±1.1a 6.3±2.7b 34.5±16.4b

Table 4

Effects of different sowing rates on yields of buckwheat varieties in 2018 and 2019"

品种
Variety		 年份
Year		 播种量（万粒/hm2）
Sowing rate (×104/hm2)		 单株粒数
Grains per plant		 单株粒重
Grain weight per plant (g)		 千粒重
1000-grain weight (g)		 产量
Yield (kg/hm2)
冀甜荞1号 2018 60 177.9±22.4a 4.8±0.5a 29.0±0.3a 1312.5±591.0c
Jitianqiao 1 90 180.1±16.0a 4.9±0.5a 28.5±0.7a 1517.5±286.5bc
120 182.5±9.9a 4.9±0.3a 28.2±0.4a 2032.5±122.9a
150 162.1±22.0ab 4.0±0.3ab 28.3±0.6a 1942.5±316.5ab
180 140.1±9.2b 3.3±0.4b 28.9±0.3a 1938.0±174.0ab
2019 60 177.3±55.9ab 3.4±1.8b 27.4±1.5a 1511.5±289.5b
90 203.6±27.4a 5.1±1.4a 28.1±1.6a 1787.3±171.0b
120 205.7±4.1a 5.7±1.5a 27.4±1.7a 2338.3±714.0a
150 159.7±37.0b 3.2±0.4b 28.1±0.7a 2331.0±229.5a
180 151.7±20.0b 3.1±0.9b 27.9±1.7a 2290.8±397.5a
冀苦荞1号 2018 30 325.7±24.5ab 5.4±0.3ab 17.7±0.4a 2180.0±119.6b
Jikuqiao 1 60 369.2±70.2a 5.7±2.0a 17.7±0.5a 2372.5±92.6b
90 408.3±44.0a 7.2±0.6a 17.7±0.4a 2820.0±174.5a
120 319.2±48.3a 5.8±1.0a 17.9±0.1a 2777.5±156.0a
150 300.0±18.5b 5.4±0.4b 17.8±1.1a 2767.5±273.1a
2019 30 438.7±103.7ab 7.2±1.5ab 17.1±0.9a 2258.6±367.5c
60 455.6±149.1ab 7.5±2.1ab 17.0±1.2a 2879.1±246.2b
90 532.4±188.8a 8.5±1.6a 17.1±0.7a 3364.4±319.9a
120 390.1±123.1b 6.5±2.5b 17.3±1.2a 3332.3±121.8a
150 380.1±177.8b 5.7±2.5b 17.8±1.3a 3349.7±478.0a

Fig.1

Comparison of yield of different sowing rates of two buckwheat varieties in 2018-2019 The different lowercase letters indicate significant difference at 0.05 level, the same below"

Fig.2

Comparison of the highest and lowest yields of two buckwheat varieties in 2018-2019"

Table 5

Correlation analysis between sowing rates and each trait"

品种
Variety		 株高
Plant
height		 主茎节数
Nodes of
main stem		 主茎分枝数
Branches of
main stem		 花序数
Number of
inflorescences		 单株粒数
Grains per
plant		 单株粒重
Grain weight
per plant		 千粒重
1000-grain
weight		 产量
Yield
冀甜荞1号Jitianqiao 1 0.98** -0.94** -0.96** -0.99** -0.72 -0.56 0.21 0.86*
冀苦荞1号Jikuqiao 1 0.98** -0.92** -0.96** -0.98** -0.43 -0.35 0.88* 0.86*
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