【摘要】 【目的】探讨不同栽植密度对火龙果果实产量、品质及病虫害发生的影响，为火龙果合理密植提供理论依据。【方法】以‘大红1号’火龙果为试材，设置不同栽植密度进行处理，对火龙果果实产量、品质及病虫害发生的影响进行研究，将试验所得的综合数据进行统计分析。【结果】不同栽植密度的‘大红1号’火龙果产量差异显著，处理3(18000株/ha)的4a生火龙果产量显著高于其他处理，果实品质、病虫害发生程度与处理1(6000株/ha)、处理2(12000株/ha)差异不显著。处理4(24000株/ha)在第2a提前进入盛果期；同一栽植密度，随着栽培年限的增加，火龙果产量也随之增加，当栽植密度为24000株/ha时，产量则呈现先增后降现象。【结论】18000株/ha处理的火龙果产量最高，果实品质较优，病虫害发生程度低，为最适宜栽植密度。更多还原

【Abstract】 【Objective】 Exploring the effects of different planting densities on the yield,quality,and occurrence of diseases and pests of pitaya fruit,and providing a theoretical basis for rational and dense planting of pitaya. 【Method】 Using pitaya ‘Dahong No.1’ dragon as the test material,different planting densities were set for treatments to study the impact on dragon fruit yield,quality,and disease and pest occurrence. The comprehensive data obtained from the experiment were statistically analyzed. 【Result】 The results showed that there was a significant difference in the yield of pitaya‘Dahong No.1’among different planting densities. The yield of 4-year-old pitaya under the treatment 3(18000 plants/ha)was significantly higher than that under other treatments,and there was no significant difference in fruit quality and disease and pest occurrence compared to the treatment 1(6000 plants/ha)and treatment 2(12000 plants/ha).Treatment 4(24000 plants/ha) entered the full fruiting stage ahead of schedule in the second year;With the same planting density,as the cultivation period increased,the yield of pitaya also increased. Until the planting density was 24000 plants/ha,the yield shows a trend of first increasing and then decreasing. 【Conclusion】The treatment of 18000 plants per ha could produce the highest yield,good fruit quality,and low incidence of diseases and pests,making it the optimal planting density.更多还原