Crops ›› 2016, Vol. 32 ›› Issue (3): 17-20.doi: 10.16035/j.issn.1001-7283.2016.03.004

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Production,Demand and Developmental Suggestions for Sweet Potato Seedling in Beijing

Li Renkun1,Mei Li1,Wang Lizheng2,Zhang Xin3   

  1. 1Beijing Agricultural Technology Extension Station,Beijing 100029,China
    2Miyun Agricultural Technology Extension Station,Beijing 101500,China
    3Daxing Agricultural Technology Extension Station,Beijing 102600,China
  • Received:2016-03-08 Revised:2016-03-29 Online:2016-06-15 Published:2018-08-26

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Abstract:

According to the investigation for seedling production and demand situation of sweet potato production areas, 41 seedling households (from Miyun, Daxing, Fangshan, Yanqing) and 116 planting households (from Miyun, Daxing, Fangshan, Yanqing, Shunyi) in Beijing, there were some problems on sweet potato breeding and production, including scattered planting area, uneven seedling quality, non-professional production and sales,low popularizing of virus-free sweet potato, high losing rate of sweet potato storage and so on.Recommendations for these problems were to optimize the layout of sweet potato varieties, to make innovative virus-free technology,to promote green,efficient and environmental seedling protection methods, finally, to create "seed agriculture" of radiating Beijing-Tianjin-Hebei area, to promote the development of sweet potato industry.

Key words: Sweet potato, Breeding, Virus-free seedings

Table 1

Conditions and benefit of seedling"

区县County 户数Families 面积 Area(m2) 平均面积(m2)
Average area		 用种量(kg/m2)
Sowing quantity		 百株重(g)
100-plant weight		 出苗数(株/m2)
Emergence number		 成本(元/株)
Cost		 售价(元/株)
Price		 毛收入(元/m2)
Gross income		 效益(元/m2)
Benefit
房山 Fangshan 1 500 500.0 20.0 425.0 4 375.0 200.0 0.15 656.0 456.0
大兴 Daxing 9 15~70 27.2 21.7 440.0 1 589.0 118.0 0.13 206.6 88.6
2 50~80 65.0 20.0 415.0 1 563.0 107.1 0.13 203.2 96.1
6 10~660 380.0 20.0 430.0 1 817.0 117.3 0.10 181.7 64.4
密云 Miyun 11 72~180 116.2 23.9 440.0 4 131.8 174.9 0.15 619.8 447.4
11 15~40 23.6 24.4 420.0 3 781.3 185.9 0.16 605.0 420.2
延庆 Yanqing 1 16 16.0 25.0 380.0 3 550.0 190.0 0.20 710.0 510.0
平均/合计 41 15~660 161.1 22.1 421.4 2 972.4 156.2 0.15 454.6 297.5

"

区县County 乡镇
Village or town		 种薯
Seed potato		 用工
Labor		 肥料
Fertilizer		 苗床
Seedbed		 农药
Pesticide		 其他
Others		 总成本
Total cost
房山 Fangshan 韩村河 95.0 46.0 18.0 25.5 0.5 15.0 200.0
大兴 Daxing 庞各庄 73.3 5.6 0.2 28.7 0.2 10.0 118.0
魏善庄 65.0 4.0 0.3 27.5 0.3 10.0 107.1
榆垡 77.0 5.3 0.2 26.7 0.2 8.0 117.3
密云 Miyun 太师屯 95.1 40.0 10.0 11.9 0.6 17.3 174.9
西田各庄 97.5 44.4 10.0 11.9 0.5 21.6 185.9
延庆 Yanqing 沈家营 100.0 44.0 10.0 20.0 0.5 15.5 190.0
平均Average 86.1 27.0 7.0 21.7 0.4 13.9 156.2
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