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Mix-cropping of rice and water mimosa (Neptunia oleracea Lour.) increases rice photosynthetic efficiency, yield, grain quality and soil available nutrients

文献类型： 外文期刊

作者： Hei, Zewen 1 ; Xiang, Huimin 1 ; Zhang, Jiaen 1 ; Liang, Kaiming 2 ; Zhong, Jiawen 1 ; Li, Meijuan 1 ; Ren, Xiaoqiao 1 ;

作者机构： 1.South China Agr Univ, Guangdong Prov Key Lab Ecocircular Agr, Guangzhou, Peoples R China

2.South China Agr Univ, Coll Nat Resources & Environm, Dept Ecol, Guangzhou 510642, Peoples R China

3.Guangdong Prov Engn Technol Res Ctr Modern Ecoagr, Guangzhou, Peoples R China

4.South China Agr Univ, Key Lab Agroenvironm Trop, Minist Agr & Rural Affairs, Guangzhou, Peoples R China

5.Guangdong Acad Agr Sci, Guangdong Key Lab New Technol Rice Breeding, Rice Res Inst, Guangzhou, Peoples R China

关键词： intercropping; mix-cropping; rice; soil nutrients; yield

期刊名称：JOURNAL OF THE SCIENCE OF FOOD AND AGRICULTURE （ 影响因子：4.125； 五年影响因子：4.096 ）

ISSN： 0022-5142

年卷期： 2022 年 102 卷 10 期

页码：

收录情况： SCI

摘要： BACKGROUND Cereal cultivation with legumes plays an important role in improving biodiversity and productivity. However, there are limited references concerning rice/legume mix-cropping in paddy fields. An aquatic leguminous plant, water mimosa (Neptunia oleracea Lour.), was introduced and a related field experiment of two seasons (early and late seasons in 2019) was carried out to explore the effects of rice/water mimosa mix-cropping on rice growth, yield, grain quality and soil nutrients in the present study. Three treatments - rice monocropping, rice/water mimosa intercropping and mix-cropping - were employed in this study. RESULTS Results showed that rice grew better with greater height, tiller number, chlorophyll content, actual photosynthetic efficiency [Y(II)], maximum photochemical efficiency (F-v/F-m) and photochemical quenching coefficient (qP) in the intercropping and mix-cropping treatments. In addition, the intercropping and mix-cropping treatments increased nutrient uptake of nitrogen (N) by11.89-24.42%, phosphorous (P) by 17.75-36.61% and potassium (K) by 19.22-47.44%, and rice yield by 19.9% and 21.8%. Conversely, the non-photochemical quenching coefficient (NPQ), chalkiness degree and chalky rate of rice were lower in the intercropping and mix-cropping treatments relative to those in the monocropping treatments. Notably, soil alkali-hydrolysable N (AN), available P (AP) and K (AK) contents were the highest in the mix-cropping treatments among the three cropping systems. CONCLUSION We suggest that rice/water mimosa mix-cropping is an environmentally friendly agroecological system with a higher output and can be extended for green rice production and largely applied in the paddy field. (c) 2021 Society of Chemical Industry.

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