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| Effects of rapeseed intercropped with chickpea and lupin on P， Fe， Zn absorption and utilization |
| Received:December 20, 2022 Revised:April 04, 2023 |
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| KeyWord:intercropping;biomass;rape crops;available phosphorus;organic acid;rhizosphere |
| Author Name | Affiliation | E-mail | | YUE Qian | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Jiangsu Agricultural Biodiversity Cultivation and Utilization Research Center, Nanjing 210014, China | | | JI Zhengqing | Suzhou Polytechnic Institute of Agriculture, Jiangsu 215008, China | | | SHENG Jing | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Jiangsu Agricultural Biodiversity Cultivation and Utilization Research Center, Nanjing 210014, China | nkysj@hotmail.com | | XU Naixia | Suzhou Polytechnic Institute of Agriculture, Jiangsu 215008, China | 804925310@qq.com | | ZHU Puping | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Jiangsu Agricultural Biodiversity Cultivation and Utilization Research Center, Nanjing 210014, China | | | WANG Xin | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Jiangsu Agricultural Biodiversity Cultivation and Utilization Research Center, Nanjing 210014, China | | | ZONG Jiao | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Jiangsu Agricultural Biodiversity Cultivation and Utilization Research Center, Nanjing 210014, China | | | GUO Zhi | Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences/Jiangsu Agricultural Biodiversity Cultivation and Utilization Research Center, Nanjing 210014, China | | | LI Qingkui | Suzhou Polytechnic Institute of Agriculture, Jiangsu 215008, China | | | ZHU Xi | Suzhou Polytechnic Institute of Agriculture, Jiangsu 215008, China | |
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| Abstract: |
| Intercropping is an important method for improving nutrient utilization. In this study, a pot experiment was conducted with six treatments:control(CK), Cicer arietinum(CP), Lupins(LU), Brassica napus(RA), intercropping of Cicer arietinum/Brassica napus(RA/CP), and intercropping of Lupins/Brassica napus(RA/LU), to investigate the characteristics of P, Fe, and Zn uptake and utilization, and their traits influencing different intercropping treatments. The results showed that the aboveground biomass, and total P and Zn uptake in the RA/CP treatment were the highest, with a biomass increase of approximately 74% compared with RA and CP treatments, and an increase in total P uptake of 76.5% and 113.9% compared with RA and CP, respectively. The total Fe and Zn uptake in the aboveground parts of intercropping were notably increased by 270% and 121%, respectively, compared with the monoculture. In addition, RA/CP and RA/LU treatments notably increased the available phosphorus content in the rhizosphere soil of rape crops, increasing by 33.8% and 50.4%, respectively, while the activation for chickpea or lupin was not obvious. Furthermore, crop intercropping increased organic acid secretion in rhizosphere soils. The total amount of organic acids in the rape rhizosphere under the RA/LU treatment was 1.6 times higher than that of the monoculture. Overall, intercropping rape with chickpea and lupin could promote the formation of aboveground plant biomass and P, Fe, and Zn nutrient accumulation in plants, particularly rape. The RA/CP had the strongest effect on soil nutrient absorption and utilization. |
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