Effects of intercropping with vegetable soybean and grain soybean on the yield of Nanfeng tangerine and soil fertility

doi:10.14088/j.cnki.issn0439-8114.2025.10.006

Abstract

Abstract: A Nanfeng tangerine (Yangxiao-26) orchard in the red soil hilly region of Jiangxi Province was used as the research object. Vegetable soybean (B1) and grain soybean (B2) were intercropped between tree rows, with no intercropping (CK) as the control, to investigate the changes in citrus yield, sweetness, soybean yield, economic benefits, and soil fertility under different treatments. The results showed that regarding yield and economic benefits, the citrus yields of B1 and B2 treatments significantly increased by 12.96% and 9.60%, respectively, compared with the CK treatment, but there was no significant difference between the two intercropping treatments. The economic returns significantly increased by 34.96% and 14.42%, respectively, and the B1 treatment was significantly higher than the B2 treatment. Regarding fruit quality, the citrus sweetness of B1 and B2 treatments significantly increased by 24.30% and 11.23%, respectively, compared with CK, and the B1 treatment was significantly higher than the B2 treatment. Regarding soil properties, both B1 and B2 treatments increased soil pH and organic matter content to some extent, but the effects were not significant. The B1 and B2 treatments had no significant effects on the total nitrogen, total phosphorus, or total potassium content in the soil.Both B1 and B2 treatments were conducive to increasing the soil available nutrient content, optimizing the aggregate composition, and improving soil quality.Intercropping with either vegetable soybean or grain soybean increased citrus yield and improved soil fertility, and either could be selected based on production needs.

Key words: Nanfeng tangerine, intercropping, vegetable soybean, grain soybean, yield, soil fertility

CLC Number:

S142⁺.1

SONG Hui-jie, WU Yan, HU Dan-dan, CHEN Xiao, HU Zhi-hua, XU Xiao-lin, LIU Kai-lou, KANG Feng. Effects of intercropping with vegetable soybean and grain soybean on the yield of Nanfeng tangerine and soil fertility[J]. HUBEI AGRICULTURAL SCIENCES, 2025, 64(10): 37-40.

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