| Effects of Codonopsis pilosula straw substrate on the yield and economic benefits of potato pre\|basic seed in the Northwest arid region |
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| DOI：10.7606/j.issn.1000-7601.2024.04.21 |
| Key Words: Codonopsis pilosula straw mixed substrate potato pre\|basic seed yield economic benefits |
| Author Name | Affiliation | | FAN Yi | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | LI Yajie | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | HAN Jingren | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | TAN Weijun | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | CHEN Zixiong | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | ZHANG Juanning | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | CHEN Xiaoli | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | KONG Lehui | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | ZHANG Ming | Dingxi Agricultural Science Research Institute, Dingxi, Gansu 743000, China； Gansu Potato Industry Technology Innovation Center, Dingxi, Gansu 743000, China | | BIAN Chunsong | Institute of Vegetables and Flowers, Chinese Academy of Agricultural Sciences, Beijing 100081, China |
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| Abstract: |
| To investigate the impact of traditional cultivation substrate alternatives and new mixed substrates on potato pre\|basic seed production，a split\|plot experiment was conducted in Dingxi City in 2023. The experiment focused on potato varieties as the main plots with two cultivars: ‘Longshu No.7’ (V1) and ‘Jizhangshu No.12’ (V2). The sub\|plots involved 11 different cultivation substrates created by mixing codonopsis stem,peat soil,vermiculite，and coco peat in various volume ratios:T1 (20% Codonopsis +50% peat soil +30% vermiculite),T2 (30% Codonopsis +40% peat soil +30% vermiculite),T3 (50% Codonopsis +20% peat soil +30% vermiculite),T4 (70% Codonopsis +30% vermiculite)，T5 (100% Codonopsis)，T6 (20% Codonopsis+40% peat soil +40% coco peat), T7 (30% Codonopsis +30% peat soil +40% coco peat)，T8 (50% Codonopsis +10% peat soil +40% coco peat)，T9 (60% Codonopsis +40% coco peat)，CK1 (100% vermiculite)，and CK2 (100% coco peat). The study examined the effects of these different cultivation substrates on the growth,yield,and economic benefits of potato pre\|basic seed production. The results showed that when Codonopsis stem was mixed with peat soil,vermiculite, or coco peat,the survival rates of virus\|free seedlings for ‘Longshu No.7’ and ‘Jizhangshu No.12’ ranged from 33.30% to 100.00% and 63.48% to 100.00% respectively. The mix of 20% Codonopsis, 50% peat soil,and 30% vermiculite (T1) provided the optimal conditions for ‘Longshu No.7’，achieving the highest total yield，total output，economic benefit，and input\|output ratio.Specifically,the total yield，total output，economic benefit，and input\|output ratio were 5 650.98 kg·hm-2，2.4954 million CNY·hm-2，1.6538 million CNY·hm-2，and 2.97 respectively. Compared to CK1，these values increased by 81.04%，60.57%，110.27%，and 47.03%. When compared to CK2，they increased by 74.49%，41.89%，75.73%，and 38.14%. For ‘Jizhangshu No.12’， the total yield，total output，economic benefit，and input\|output ratio were 3 950.06 kg·hm-2，1.8032 million CNY·hm-2，0.9616 million CNY·hm-2，and 2.14 respectively. Compared to CK1，these values increased by 45.32%，18.79%，28.14%，and 8.08%. When compared to CK2，they increased by 56.50%，32.26%，76.18%，and 28.14%. In summary, increasing the proportion of Codonopsis stem appropriately in the mixed substrate can effectively promote the growth and development of potato virus\|free seedlings,leading to higher yields and economic benefits for potato original seed production. |
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