| Effects of cassava\|alfalfa intercropping on physiological characteristics, yield of cassava, and farmland soil physiochemical properties |
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| DOI：10.7606/j.issn.1000-7601.2026.03.09 |
| Key Words: cassava alfalfa intercropping physiological characteristics yield soil properties |
| Author Name | Affiliation | | XIAO Mingkun | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | SONG Jiming | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | SHEN Zhengsong | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | LI Yuexian | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | DUAN Chunfang | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | LIU Qian | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | ZHOU Yingchun | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | GENG Sha | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | YAN Wei | Tropical and Subtropical Cash Crops Research Institute, Yunnan Academy of Agricultural Sciences/National Key Laboratory of Tropical Crop Breeding, Baoshan, Yunnan 678000, China | | LIU Guanghua | International Agricultural Research Institute, Yunnan Academy of Agricultural Sciences, Kunming, Yunnan 650205, China |
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| Abstract: |
| This study aimed to investigate the intercropping advantages of the cassava\|alfalfa system and identify the optimal planting configuration. Four planting patterns were established, including monoculture cassava (MC), intercropping of four rows of cassava with six rows of alfalfa at a spacing of 50 cm (ICA45), intercropping of four rows of cassava with six rows of alfalfa at a spacing of 80 cm (ICA48), and intercropping of two rows of cassava with six rows of alfalfa at a spacing of 50 cm (ICA25). Subsequently, the effects of different patterns on cassava yield, agronomic traits, physiological characteristics, and soil properties were measured and analyzed. The results showed that the intercropping of cassava and alfalfa exhibited different degrees of advantages. Specifically, compared with MC, the ICA25 pattern significantly increased chlorophyll a and total chlorophyll content in cassava leaves by 26.16% and 23.40%, respectively. Moreover, it also significantly increased total surface area, total volume, and average diameter of storage roots by 132.83%, 268.75%, and 90.74%, respectively. In addition, soil available potassium content was significantly increased by 10.69% to 18.31%, and fresh tuber mass per plant was significantly increased by 31.92%. Correlation analysis showed that there were significant positive correlations among soil nutrient content, aboveground vegetative growth, and tuber yield traits, indicating that soil nutrients enhance crop yield by promoting aboveground growth. In conclusion, the intercropping pattern of two rows of cassava with six rows of alfalfa at a spacing of 50 cm demonstrated significant intercropping advantages in improving cassava agronomic traits, increasing fresh tuber yield, and optimizing soil physicochemical properties, which could be used as the optimal pattern for this intercropping system. |
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