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Acta Prataculturae Sinica ›› 2018, Vol. 27 ›› Issue (4): 69-78.DOI: 10.11686/cyxb2017329

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Effect of various crop residues on growth and disease resistance of Angelica sinensis seedlings in Min County

JIN Yan-bo1, GUO Feng-xia1, *, CHEN Yuan1, 2, *, BAI Gang1, YUAN Hong-chao1, LIANG Wei1   

  1. 1.Gansu Provincial Key Lab of Good Agricultural Production for Traditional Chinese Medicines, Gansu Provincial Engineering Research Centre for Medical Plant Cultivation and Breeding, Gansu Provincial Key Lab of Aridland Crop Science, College of Life Science and Technology, College of Agronomy, Gansu Agricultural University, Lanzhou 730070, China;
    2.Gansu Engineering Lab of Resource Reservation and Utilization for Characteristic Medical Plants, Gansu Cultivated Engineering and Technology Research Center of Standardization and Traceability for Characteristic Chinese Medicine, Gansu Tasly Zhongtian Pharmaceutical Co., Ltd, Dingxi 748100, China
  • Received:2017-08-10 Revised:2017-12-15 Online:2018-04-20 Published:2018-04-20

Abstract: Traditional seedling nursery methods relying on uncultivated land for Angelica sinensis have caused serious soil erosion and debris flow. A study has been undertaken to explore the use of crop stubble land for the production of A. sinensis seedlings. Using the stubble fields of Triticum aestivum, Astragalus membranaceus, Solanum tuberosum and A. sinensis crops in Min county of Gansu province, seedlings were cultivated and their growth and resistance indicators measured. Index weights were calculated using principle component analysis and the membership function method was also used to explore the effect of crop stubbles on the seedling nursery. Results showed that the aboveground growth of seedlings varied significantly with different crop stubbles. Seedlings cultured in wheat and Astragalus residues showed the strongest growth indicators, with strong roots and growth power resulting in excellent individual plant quality with a low root incidence rate and disease index. Seedlings produced under potato and Angelica residues were highly affected by seasonal variations, resulting in high death rates and elongation of the growth period. The oldest and smallest seedlings occurred in the continuous cropping system and the potato residue, which had over 36.7% disease rates. According to the comprehensive index, the residues were ranked as Astragalus (0.7840)>wheat (0.7816)>Angelica (0.4731)>potato (0.1656). Seedlings produced in potato residue showed the highest death rate and seedlings in Angelica residue exhibited the highest incidence rate. These results suggest that the residues of wheat and Astragalus crops provide the most suitable soil resources for cultivating Angelica seedlings in Min county.

Key words: Angelica sinensis, crop residues, seedling cultivation, incidence rate, comprehensive index