| 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 |
| 作者 | 单位 | | 肖明昆 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 宋记明 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 沈正松 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 李月仙 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 段春芳 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 刘倩 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 周迎春 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 耿沙 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 严炜 | 云南省农业科学院热带亚热带经济作物研究所/热带作物生物育种全国重点实验室,云南 保山 678000 | | 刘光华 | 云南省农业科学院国际农业研究所,云南 昆明 650205 |
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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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