Welcome to Chinese Agricultural Science Bulletin,

Chinese Agricultural Science Bulletin ›› 2022, Vol. 38 ›› Issue (1): 1-6.doi: 10.11924/j.issn.1000-6850.casb2021-0156

Special Issue: 生物技术 马铃薯

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Comprehensive Optimal Cultivation Technique of Edible-type Sweet Potato ‘Chuan M1422’

QU Huijuan1(), LI Ming1, SHEN Xueshan2(), ZHU Ling1, PU Zhigang1, FENG Junyan1, ZHANG Cong1   

  1. 1Institute of Biotechnology and Nuclear Technology, Sichuan Academy of Agricultural Sciences, Chengdu 610066
    2Institute of Agricultural Resources and Environment, Sichuan Academy of Agricultural Sciences, Chengdu 610066
  • Received:2021-02-19 Revised:2021-09-28 Online:2022-01-05 Published:2022-02-24
  • Contact: SHEN Xueshan E-mail:qhjuan120@126.com;shenxueshan@126.com

Abstract:

This paper aims to select suitable comprehensive cultivation techniques of edible-type sweet potato ‘Chuan M1422’ in the hilly region of middle Sichuan Province. The effects of transplant density, compound fertilizer and water retaining agent amount on the tuber yield and quality indexes were studied with orthogonal experiment by a ternary quadratic general combinatorial orthogonal design. The results showed that the influence of the three factors on the fresh tuber yield, commodity rate, dry matter rate, protein content, starch content and vitamin C content was in an order of transplant density > water retaining agent amount > compound fertilizer amount. The influence of the three factors on β-carotene content was in an order of water retaining agent amount > transplant density > compound fertilizer amount. The comprehensive optimal cultivation technique that satisfied β-carotene content above 0.47%, vitamin C content above 29.00 mg/100 g and the commodity rate above 93.00% was: transplant density of 4.82×10 4-5.76×104 plant/hm2, compound fertilizer amount of 709.72-785.21 kg/hm2, and water retaining agent amount of 32.67-41.03 kg/hm2.

Key words: sweet potato, edible-type, ‘Chuan M1422’, quality, comprehensive optimal cultivation technique

CLC Number: