Crops ›› 2017, Vol. 33 ›› Issue (1): 79-82.doi: 10.16035/j.issn.1001-7283.2017.01.015

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Row Intercropping System of Purple Sweetpotato with Different Density’s Sunflower

She Xiaoling1,Nie Zijin2,Zhao Jing1,Li Lin2   

  1. 1Beijing Yanqing Agricultural Technology Spreading Station,Beijing 102100,China
    2Beijing Agricultural Technology Spreading Station,Beijing 100029,China
  • Received:2016-10-19 Revised:2016-12-07 Online:2017-02-15 Published:2018-08-26

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Abstract:

In order to adjust agricultural structure and solve the problem of arable land resource shortage in Yanqing district of Beijing, a field experiment of intercropping system of purple sweetpotato and sunflower was carried out. Results showed that intercropping could increase the benefit of sweetpotato cultivation. Sweetpotato yield first increased and then decreased with sunflower density increasing in the range of 3 125~12 500 plant/hm 2. Sunflower yield decreased with reduction of density. The intercropping mode had a higher yield and benefit within the range of 4 167~6 250 plant/hm 2. And 4 167 plant/hm 2 was considered to be the most proper sunflower density among all the treatments with purple sweetpotato yield of 33.48 t/hm 2 increased by 13.26% and total benefits of 165 411yuan/hm 2 increased by 21.80%.

Key words: Purple sweetpotato, Sunflower, Intercropping, Density, Benefit

Table 1

Cropping patterns of different treatments"

处理Treatment 种植模式Cropping mode 向日葵行距Row width of sunflowers(cm) 向日葵密度Density of sunflowers(株/hm2)
1 1垄甘薯1沟向日葵 80 12 500
2 2垄甘薯1沟向日葵 160 6 250
3 3垄甘薯1沟向日葵 240 4 167
4 4垄甘薯1沟向日葵 320 3 125
5 甘薯单作 — —
6 向日葵单作 100 12 500

Table 2

Plant characteristics of purple sweetpotato and sunflower under different treatments"

处理
Treatment		 紫肉甘薯Purple sweetpotato 向日葵Sunflower
地上部鲜重Top fresh weight (g/plant) 株高Plant height (cm) 茎粗Stem diameter (mm) 叶片数Leaf number
1 445.3a 140.2b 26.07b 26.8a
2 347.3b 126.6c 28.21a 27.6a
3 365.9b 126.4c 28.43a 27.4a
4 338.0b 123.8c 28.51a 27.0a
5 340.5b — — —
6 — 155.2a 26.55b 27.0a

Table 3

Yield characteristics of purple sweetpotato under different treatments"

处理
Treatment		 有效单株薯数(个)
Valid storage root number per plant		 平均单薯鲜重(kg)
Average fresh weight per tube		 大中薯率(%)
Percentage of large and middle tuberous root		 块根产量(t/hm2)
Fresh yield of storage root
1 3.77c 98.78e 69.96b 22.40d
2 3.91b 135.56b 87.25a 31.82b
3 5.44a 113.92d 88.93a 33.48a
4 3.54d 139.82a 87.39a 29.74c
5 3.99b 123.56c 86.42a 29.56c

Table 4

Yield characteristics of sunflower under different treatments"

处理Treatment 葵盘直径Disk diameter (cm) 单盘粒数Grain number of single disk 百粒重100 grain weight (g) 产量Grain yield (kg/hm2)
1 20.6c 729.1a 19.93a 1 818.00b
2 26.4a 802.0a 20.86a 1 046.00c
3 26.2a 797.4a 21.57a 717.00d
4 26.0a 815.0a 21.35a 463.95e
6 21.3b 796.0a 18.68a 2 177.00a

Table 5

Analysis of input and output of different treatments 元/hm2"

处理
Treatment		 紫肉甘薯Purple sweetpotato 向日葵Sunflower 合计Total
投入Input 产出Output 投入Input 产出Output 投入Input 产出Output 效益Benefit
1 41 550 134 400 2 367 18 180 43 917 152 580 108 663
2 41 550 190 920 1 408 10 460 42 958 201 380 158 422
3 41 550 200 880 1 089 7 170 42 639 208 050 165 411
4 41 550 178 440 929 4 640 42 479 183 080 140 601
5 41 550 177 360 0 0 41 550 177 360 135 810
6 0 0 2 367 21 770 2 367 21 770 19 403
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