Reasons for promoting rhizosphere nutrient absorption and utilization of <i>Atractylodes lancea</i> by intercropping with maize

CAO Meiyu; ZHANG You; YAN Binbin; WAN Xiufu; SUN Kai; KANG Chuanzhi; WANG Hongyang; LYU Chaogeng; ZHANG Yan; GUO Lanping

doi:10.12357/cjea.20230361

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CAO M Y, ZHANG Y, YAN B B, WAN X F, SUN K, KANG C Z, WANG H Y, LYU C G, ZHANG Y, GUO L P. Reasons for promoting rhizosphere nutrient absorption and utilization of Atractylodes lancea by intercropping with maize[J]. Chinese Journal of Eco-Agriculture, 2023, 31(0): 1−12 doi: 10.12357/cjea.20230361

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CAO M Y, ZHANG Y, YAN B B, WAN X F, SUN K, KANG C Z, WANG H Y, LYU C G, ZHANG Y, GUO L P. Reasons for promoting rhizosphere nutrient absorption and utilization of Atractylodes lancea by intercropping with maize[J]. Chinese Journal of Eco-Agriculture, 2023, 31(0): 1−12 doi: 10.12357/cjea.20230361

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Reasons for promoting rhizosphere nutrient absorption and utilization of Atractylodes lancea by intercropping with maize

doi: 10.12357/cjea.20230361

1.
Center for Chinese Materia Medica, China Academy of Chinese Medical Sciences / State Key Laboratory Breeding Base of Dao-di Herbs, Beijing 100700, China
2.
Laiwu Ziguang Ecological Park Co. Ltd. Laiwu 271100, China

Funds: This study was supported by the National Natural Science Foundation of China (81891014) and China Agriculture Research System of MOF and MARA (CARS-21).

More Information

Corresponding author: ZHANG Yan, E-mail: zhangyan8669@126.com; GUO Lanping, E-mail: glp01@126.com
Received Date: 2023-06-30
Accepted Date: 2023-11-15

Available Online: 2023-12-01

Abstract

Abstract

Previous studies have found that intercropping with maize can alleviate the continuous cropping obstacle of Atractylodes lancea, and the change of nutrient conditions is one of the key factors. In order to explore the effect of A. lancea-maize intercropping on nutrient absorption and utilization in the rhizosphere of A. lancea, a two-year field experiment of different rhizosphere separation treatments in the A. lancea-maize intercropping was carried out. Four treatments were set up, which were A. lancea monoculture (A), A. lancea-maize intercropping without separation (AI), A. lancea-maize intercropping with nylon separation (AN) and A. lancea-maize intercropping with plastic film (AP). The biomass of A. lancea and the contents of four volatile oil components were measured at harvest. The contents of nitrogen, phosphorus and potassium in the rhizome of A. lancea, rhizosphere soil pH, organic matter and soil nutrient factors were compared and analyzed. The results showed that the fresh weight of rhizomes of A. lancea of AI treatment was significantly higher than those of A and AP treatments (P<0.05), which was 21.5% and 69.1% higher, respectively; while AN treatment was 10.7% and 54.2% higher than AI and AP, respectively. The content of β-eudesmol of AI treatment was significantly higher than that of A and AP treatments by 128.4% and 205.6%, respectively (P<0.05). The content of atractylodin of AI treatment was significantly higher than that in A and AP treatments by 875.0% and 97.7%, respectively; and that of AN treatment was significantly higher than that of A and AP treatments by 764.0% and 75.0%, respectively. The total content of four volatile oil components A. lancea of AI and AN treatment was significantly higher than that of A and AP treatments by 82.8%−210.3% (P<0.05), indicating that the underground rhizosphere interaction of A. lancea-maize intercropping played an important role in promoting the biomass and volatile oil accumulation of A. lancea rhizome. Compared with A and AP treatments, AI and AN treatments decreased the rhizosphere soil pH of A. lancea by 0.4%−6.3%, and the soil organic matter increased by 13.5%−48.1%; while AI treatment significantly increased alkali-hydrolyzable nitrogen content by 32.8% and 36.2%, respectively; AN treatment significantly increased available potassium content by 51.5% and 46.7%, available phosphorus content by 78.3% and 86.6%, respectively. It shows that the rhizosphere interaction of A. lancea and maize improve the rhizosphere acidification level of A. lancea and activate soil nitrogen, phosphorus and potassium compared with no rhizosphere interaction. Correlation analysis showed that atractylon was mainly positively correlated with nitrogen, phosphorus and potassium in rhizome of A. lancea; and nitrogen, phosphorus and potassium in rhizosphere soil; while atractylodin was mainly positively correlated with potassium in rhizome. Compared with A and AP treatments, AI treatment increased the phosphorus absorption efficiency of A. lancea by 23.4% and 30.0%, respectively. The nitrogen and potassium utilization efficiency was significantly increased by 131.3%−222.2% (P<0.05)under AI and AN treatments compared with A, indicating that the rhizosphere interaction of intercropping crops promote the phosphorus absorption, and improve the nitrogen and potassium nutrient utilization ability of A. lancea. In conclusion, in the A. lancea-maize intercropping system, the underground rhizosphere interaction (under AI and AN treatment) promoted the absorption and utilization of nutrients in the rhizomes of A. lancea compared with no rhizosphere interaction (under A and AP treatment), thereby increasing the yield of A. lancea and affecting the accumulation of volatile oil in the rhizomes of A. lancea. This study reveals that the underground rhizosphere interaction of A. lancea-maize intercropping is an important factor to promote the absorption and utilization of nutrients of A. lancea, and provides an important reference for the promotion of the ecological diversity planting mode of medicinal plants.
- Atractylodes lancea-maize intercropping,
- Volatile oils,
- Rhizome biomass,
- Nutrient absorption,
- Rhizosphere soil nutrients

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References(58)

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