Effects of irrigation mode and super absorbent polymer on growth regulation and water-saving for arabica coffee
Wang Lu1, Liu Xiaogang1, Zhang Yan1, Wan Mengdan1, Yang Qiliang1, Li Xiaojuan2
1.Faculty of Modern Agricultural Engineering, Kunming University of Science and Technology, Kunming, Yunnan 650500, China; 2.Department of Water Conservancy, Yellow River Conservancy Technical Institute, Kaifeng, Henan 475004, China
Abstract:To explore water-saving and high-efficient production modes of featured tropical cash crop-Yunnan arabica coffee, the effects of irrigation mode and super absorbent polymer(SAP)on physiological and ecological characteristics, biomass accumulation and water use efficiency(WUE)of the arabica coffee are studied experimentally. The experiments are conducted by using three drip irrigation modes, i.e. conventional drip irrigation(CDI), alternative drip irrigation(ADI)and fixed drip irrigation(FDI), and two levels of super absorbent polymer, i.e. SAP and NSAP. The result show that ADI and FDI can increase the content of chlorophyll, proline, malonaldehyde and soluble sugar greatly compared with CDI, and ADI can extend the root activity while FDI reduces it significantly. ADI can reduce water consumption by 32.07%, increasing WUE by 29.87%. The applied SAP can reduce the contents of proline, malonaldehyde and soluble sugar in leaves, causing 24.81%, 33.03% increments respectively in the biomass accumulation and WUE. Compared with CDI plus NSAP mode, ADI plus SAP mode can enrich the content of chlorophyll, root activity and soluble sugar greatly, lower the accumulations of malonaldehyde and proline, increase the total biomass by 13.80% and improve WUE by 73.41%. Therefore, ADI plus SAP mode can be a suitable to comprehensive water saving regulation measure for Yunnan arabica coffee.
王露, 刘小刚, 张岩, 万梦丹, 杨启良, 李晓娟. 滴灌模式和保水剂对小粒咖啡生长调控及节水效应[J]. 排灌机械工程学报, 2015, 33(9): 796-801.
Wang Lu, Liu Xiaogang, Zhang Yan, Wan Mengdan, Yang Qiliang, Li Xiaojuan. Effects of irrigation mode and super absorbent polymer on growth regulation and water-saving for arabica coffee. Journal of Drainage and Irrigation Machinery Engin, 2015, 33(9): 796-801.
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