| 遮阴下滴灌施肥对小粒种咖啡土壤质量和水分利用的影响 |
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| 引用本文： | 李慧永,刘小刚,张文慧,孙文艳,吴朗,张朔,杨启良,熊国美.遮阴下滴灌施肥对小粒种咖啡土壤质量和水分利用的影响[J].华南农业大学学报,2022,43(2):57-67. |
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| 作者姓名： | 李慧永 刘小刚 张文慧 孙文艳 吴朗 张朔 杨启良 熊国美 |
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| 作者单位： | 昆明理工大学农业与食品学院,云南昆明650500 |
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| 基金项目： | 国家自然科学基金(51979133，51769010，51469010)；云南省教育厅科学研究基金(2021Y116)；云南省大学生创新训练项目(202010674115) |
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| 摘 要： | 【目的】探究遮阴下不同水肥耦合模式对小粒种咖啡根区土壤质量及水分利用的影响。【方法】以小粒种咖啡为研究对象,在30%遮阴度下,试验设2因素（灌水和施肥）3水平完全设计,共9个处理。3个灌水水平:高水（WH:1.2 Ep）、中水（WM:1.0 Ep）和低水（WL:0.8 Ep）;3个施肥水平:高肥(FH:530.00 kg·hm-2)、中肥(FM:353.33 kg·hm-2)和低肥(FL:176.67 kg·hm-2)。分析小粒种咖啡根区土壤养分、微生物数量、酶活性、干物质量及灌溉水分利用效率对水肥调控的响应规律,通过隶属函数和因子分析相结合对土壤质量进行综合评价,再以TOPSIS法综合分析,找出小粒种咖啡最佳水肥耦合模式。【结果】灌水水平和施肥水平对小粒种咖啡根区土壤养分、微生物数量、酶活性（除秋季过氧化氢酶）、根干物质量、树干干物质量、总干物质量和灌溉水分利用效率影响显著。FH...
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| 关 键 词： | 小粒种咖啡 滴灌施肥 土壤质量 干物质量 灌溉水分利用效率 |
| 收稿时间： | 2021/3/4 0:00:00 |
Effects of drip fertigation under shade on soil quality and water use of Coffea arabica |
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| LI Huiyong,LIU Xiaogang,ZHANG Wenhui,SUN Wenyan,WU Lang,ZHANG Shuo,YANG Qiliang,XIONG Guomei.Effects of drip fertigation under shade on soil quality and water use of Coffea arabica[J].Journal of South China Agricultural University,2022,43(2):57-67. |
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| Authors: | LI Huiyong LIU Xiaogang ZHANG Wenhui SUN Wenyan WU Lang ZHANG Shuo YANG Qiliang XIONG Guomei |
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| Institution: | Faculty of Agriculture and Food, Kunming University of Science and Technology, Kunming 650500, China |
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| Abstract: | Objective To explore the effects of different coupling modes of water-fertilizer on root zone soil quality and water use of Coffea arabica under shade.Method C. arabica was chosen as test material, under 30% shading degree, three irrigation levels (WH: 1.2 Ep, WM: 1.0 Ep, WL: 0.8 Ep) and three fertilization levels (FH: 530.00 kg·hm-2, FM: 353.33 kg·hm-2, FL: 176.67 kg·hm-2) were completely designed with a total of nine treatments. The response laws of soil nutrient, microbial quantity, enzyme activities, dry mass and irrigation water use efficiency in root zone of C. arabica to water-fertilizer regulation were analyzed, and soil quality was comprehensively evaluated by combining membership function with factor analysis, and then the optimal water-fertilizer coupling mode of C. arabica was found by TOPSIS comprehensive analysis.Result Irrigation level and fertilization level had significant effects on soil nutrient, microbial quantity, enzyme activities (except catalase in autumn), root dry mass, stem dry mass, total dry mass and irrigation water use efficiency of C. arabica root zone. The average seasonal values of nitrate nitrogen, available phosphorus and available potassium contents in FHWL treatment were the highest. The average seasonal values of soil microorganism quantity and enzyme activities were the highest in FMWH treatment. Compared with FLWL treatment, FHWL treatment increased the average seasonal values of soil nitrate-nitrogen, available phosphorus and available potassium contents by 72.61%, 154.01% and 7.37%, respectively; FMWH treatment increased the average seasonal values of soil bacteria, fungi and actinomycetes number by 121.81%, 61.73% and 41.43%, respectively, and increased the average seasonal values of urease, catalase and phosphatase activities by 46.67%, 42.74% and 22.55%, respectively. There was a significant positive correlation between soil nitrate nitrogen content and catalase activity. The number of soil bacteria, fungi and actinomycetes were significantly positively correlated with the activities of urease, catalase and phosphatase, respectively. The combination of membership function and factor analysis showed that soil quality index of FMWH treatment was the highest (0.75). The total dry mass (38 011.50 kg·hm-2) of FMWH treatment was the highest, and the irrigation water use efficiency (7.88 kg·m-3) of FMWL treatment was the highest. However, TOPSIS method showed that the comprehensive benefit (soil quality, dry matter and irrigation water use efficiency) of FMWM treatment ranked the first, followed by FMWH treatment.Conclusion Under 30% shading degree, FMWM treatment was the best coupling mode of water-fertilizer for improving soil quality and promoting efficient production of C. arabica . |
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| Keywords: | Coffea arabica Drip fertigation Soil quality Dry mass Irrigation water use efficiency |
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