Abstract：In order to ascertain the highefficiency management mode of water (WL: 0.8ETP, WM: 1.0ETP and WH: 1.2ETP), (FL∶N∶P2O5∶K2O=90.8∶90.8∶90.8 kg/hm2, FM∶N∶P2O5∶K2O=181.6∶181.6∶181.6 kg/hm2, FH∶N∶P2O5∶K2O=272.4∶272.4∶272.4 kg/hm2) and light (NS: natural light and S: 30% shading) for Arabica coffea. A complete combination experiment was set up to study the effects of different irrigation, fertilization and shading levels on the canopy structure, photosynthetic characteristics, water and fertilizer utilization as well as dry mass accumulation. At the same time, this experiment fitted the daily changes of photosynthetic indicators under different water, fertilizer, and light conditions. The results show that increasing irrigation level and shading decrease canopy opening as well as increased leaf area index, net photosynthetic rate and transpiration rate. Compared with NS, the diurnal variation curve of photosynthetic characteristics of S treatment is ″single peak″, and the dry mass accumulation, irrigation water use efficiency and fertilizer partial productivity increase by 6.24%, 11.21% and 11.54%, respectively. Increasing irrigation level increase the dry mass accumulation and fertilizer partial productivity, but decrease irrigation water use efficiency. Compared with FL, FH increase dry mass accumulation and irrigation water use efficiency by 20.59%, 6.94%, and FM increase them by 23.00% and 7.63%, respectively. The results of range analysis and comprehensive scoring show that the WMFLS combination have the greatest comprehensive benefit of dry mass accumulation, water and fertilizer utilization. The results can provide practical reference for the efficient production of Arabica coffea.
蒋泽引,刘小刚*,吴朗,张文慧,杨启良. 水肥光耦合对小粒咖啡生长特性及水肥利用的影响[J]. 排灌机械工程学报, 2023, 41(4): 409-416.
JIANG Zeyin,LIU Xiaogang*,WU Lang,ZHANG Wenhui,YANG Qiliang. Effects of water, fertilizer and light coupling on growth characteristics and water and fertilizer utilization of Arabica coffee. Journal of Drainage and Irrigation Machinery Engin, 2023, 41(4): 409-416.
