Effects of Different Planting Densities on the Yield,Quality,and Occurrence of Diseases and Pests of Pitaya Fruit
[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(18 000 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(6 000 plants/ha)and treatment 2(12 000 plants/ha).Treatment 4(24 000 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 24 000 plants/ha,the yield shows a trend of first increasing and then decreasing.[Conclusion]The treatment of 18 000 plants per ha could produce the highest yield,good fruit quality,and low incidence of diseases and pests,making it the optimal planting density.
PitayaPlanting densityYieldQualityDiseases and pests