Effects of straw cover amount on growth and development, dry matter accumulation, yield and quality of <i>Ligusticum chuanxiong</i>

LIU Baolian; GUO Junxia; WU Ping; WANG Xiaoyu; ZHANG Songlin; YANG Xiaoqian; LU Changfang; LI Qingmiao

doi:10.7671/j.issn.1001-411X.201909050

Journal of South China Agricultural University > 2020 > 41(3): 38-46. > DOI: 10.7671/j.issn.1001-411X.201909050

LIU Baolian, GUO Junxia, WU Ping, et al. Effects of straw cover amount on growth and development, dry matter accumulation, yield and quality of Ligusticum chuanxiong[J]. Journal of South China Agricultural University, 2020, 41(3): 38-46. DOI: 10.7671/j.issn.1001-411X.201909050

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Effects of straw cover amount on growth and development, dry matter accumulation, yield and quality of Ligusticum chuanxiong

1.
College of Science, Sichuan Agricultural University, Ya’an 625014, China
2.
Sichuan Provincial Key Laboratory of Quality and Innovation Research of Chinese Materia Medica, Sichuan Academy of Chinese Medicine Sciences, Chengdu 610041, China
3.
College of Agronomy, Sichuan Agricultural University, Chengdu 611130, China

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Received Date: September 23, 2019
Available Online: May 17, 2023

Graphical Abstract

Abstract

Abstract

Objective
To study the effects of straw cover amount on growth and development, dry matter accumulation, yield and quality of Ligusticum chuanxiong, and provide theoretical basis and practical guidance for sustainable agricultural development and ecological planting of L. chuanxiong.

Method
Single-factor randomized block design was adopted, and three treatments including no straw cover, covering Lingzi, covering whole ridge were setted. The emergence rate, morphological indexes, dry matter accumulation, drying rate, yield and chemical components of L. Chuanxiong were determined and analyzed. Finally, the economic benefit was evaluated.

Result
Covering whole ridge treatment had the highest emergence rate reaching 97.66%, which was significantly higher than no straw cover treatment (94.05%). The emergence rate of covering Lingzi was 96.68%, which was not significantly different from other two treatments. Straw cover treatment had significant effects on plant height during multiple growth stages especially early growth stage, had significant effects on stem number, leaf number and rhizome width at late growth stage and no significant effect on rhizome length and rhizome thickness. Except for senescene period, the aboveground part dry weight, underground part dry weight and aboveground part drying rate of covering Lingzi and covering whole ridge were higher than those of no straw cover treatment at each growth stage. The yield of covering whole ridge was 16.6% and 41.6% higher than those of covering Lingzi and no straw cover respectively, and the net income was 24.4% and 68.3% higher than those of other two treatments respectively. Straw cover treatment increased the contents of ferulic acid, senkyunolide A, ligustilide, and total phthalides in the rhizome of L.chuanxiong.

Conclusion
Straw cover treatment of L. chuanxiong during planting period is conducive to promoting growth and development and dry matter accumulation of L. chuanxiong, and improving its yield, quality and economic benefits. The effect of covering whole ridge is superior to the traditional half-cover of covering Lingzi solely.
- Ligusticum chuanxiong,
- straw cover,
- growth,
- dry matter accumulation,
- yield,
- quality

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