Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2016, Vol. 32 ›› Issue (33): 114-118.doi: 10.11924/j.issn.1000-6850.casb16010113

Special Issue: 资源与环境

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Quality and Yield Increasing Efficiency of Local Amorphophallus konjac Resources in Nujiang Region

王莉花   

  • Received:2016-01-22 Revised:2016-10-28 Accepted:2016-04-05 Online:2016-11-25 Published:2016-11-25

Abstract: To develop and utilize local A. konjac resources of Nujiang Prefecture in Yunnan, take full advantage of abundant under-forest lands to improve the quality and efficiency of agriculture in poor mountain areas, the local A. konjac resources, which were standardizedly cultivated earlier in Chuxiong City and Yongsheng County, were used as a control, the intrinsic qualities and yield increasing efficiency of the resources of the Nujiang local A. konjac were analyzed and tested . The results showed that the contents of the mineral elements, crude fat and protein in Nujiang local A. konjac were lower than that of the control materials (Chuxiong A. konjac), however, the content of the konjac glucomannan (11.30%) was 0.42 percentage points higher than that of the control. Influenced by drought, the growth periods of Nujiang local A.konjac are 160.68 days, and the yield increasing efficiency is 33.70%. Compared with the control material (Yongsheng A. konjac), the growth periods were 0.84 days longer, the yield increasing efficiency was 5.16 percent higher. When planted under walnut forest, the yield of Nujiang local A. konjac was 20556.6kg kg/hm2, which was 3616.8 kg/hm2 more than that of Yongsheng A. konjac. These results suggested that the Nujiang local A. konjac is an excellent resource, which can be used to develop under-forest konjac industry of large areas in Nnujiang Prefecture.