Abstract：In order to clarify the optimal irrigation and shading modes for a high yield of Coffea arabica in hot and dry valley area of Yunnan, three irrigation and four shading schemes are established for field experiment and the coupling effects of water and light on growth, net photosynthetic rate, water use efficiency, light use efficiency and yield of Coffea arabica are studied. The three irrigation schemes are WL, WM and WH and four shading schemes are S0-no shading, SL-55% shading, SM-75% shading and SH-95% shading. The results show that an increased irrigation can improve plant height and new branch length by 5.60%-12.39% and 10.83%-19.50%, and enhance water use efficiency, light use efficiency and dry bean yield by 16.98%-36.79%, 61.64%-121.95% and 42.27%-120.76%, respectively, compared with WL. Compared with S0, the average daily Pn, Ci, water use efficiency, light use efficiency and dry bean yield of SL have been increased by 5.85%, 10.80%, 6.64%, 28.51% and 20.05%, respectively. Compared with WLS0, the increased irrigation level and shading area can improve water use efficiency, light use efficiency and dry bean production by 13.94%-44.47%, 7.96%-231.04% and 44.55%-143.41% simultaneously. It was noted that WHSL can lead to the largest dry bean production, 6 131.84 kg/hm2. Therefore, from the highest yield point of view, WHSL should be the optimal mode of water-light coupling for Coffea arabica in hot and dry valley area.
齐韵涛, 刘小刚, 余小弟, 朱益飞, 韩志慧, 余宁, 杨启良. 限量灌溉和遮阴对干热区小粒咖啡生长、光合及产量的影响[J]. 排灌机械工程学报, 2017, 35(9): 820-828.
QI Yuntao, LIU Xiaogang, YU Xiaodi, ZHU Yifei, HAN Zhihui, YU Ning, YANG Qiliang. Effects of limited irrigation and shading on growth, photosynthesis and yield of Coffea arabica in dry-hot area. Journal of Drainage and Irrigation Machinery Engin, 2017, 35(9): 820-828.
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