江西农业大学学报2025，Vol.47Issue(6)：1505-1516,12.DOI:10.3724/aauj.2025130
菠萝秸秆沟埋还田与钾肥减施对菠萝生长发育和产量品质的影响
Effects of pineapple straw ditch burial and reduced potassium fertilizer application on growth,development,yield and quality of pineapple
摘要
Abstract
[Objective]This study aims to clarify the advantageous role of pineapple straw trench burial and return to the field in pineapple production,as well as the partial replacement effect of pineapple straw on potassium fertilizer.[Method]A split-plot design was adopted in this experiment.The main factor consisted of four returning methods of pineapple straw,namely no straw returning,and furrow burial returning at depths of 10 cm,20 cm,and 30 cm.The sub-factor included two potassium application rates:conventional potassium application and reduced potassium application,resulting in a total of 8 treatments.This study aims to investigate the effects of furrow-buried pineapple straw returning combined with reduced potassium application on the growth and development,nutrient accumulation,yield of pineapple at different growth stages,as well as soil properties at the maturity stage.[Result]Compared with non-returned soil,trench-buried returned soil can increase soil organic carbon content and available nutrients in certain soil layers,thereby improving the number of leaves,leaf area index,total dry matter,yield,nitrogen,phosphorus,and potassium accumulation,and fertilizer absorption efficiency during the mid-to-late growth stages of pineapples.Among the treatments,the 30 cm trench burial treatment yielded the best results,significantly increasing the content of nitrate nitrogen and available potassium in the deep soil layer,as well as the content of ammonium nitrogen and available phosphorus in the 0-40 cm soil layer.It also increased the number of leaves in the middle and late growth stages of pineapples by 21.28%-32.39%,the leaf area index by 34.16%-49.25%,total dry matter yield by 34.35%-41.17%,and nitrogen,phosphorus,and potassium accumulation by 7.98%-48.08%.It also increased vitamin C and soluble protein content in pineapple fruits.Compared with conventional potassium fertilizer application,reduced potassium fertilizer application under straw trench burial did not reduce the number of pineapple leaves,leaf area index,total dry matter,yield,cumulative nitrogen,phosphorus,and potassium content,or nitrogen and phosphorus fertilizer absorption and utilization rates.It also significantly increased potassium fertilizer absorption and utilization rates by 18.10%-54.53%and had no negative impact on soil physical and chemical properties.Correlation analysis indicated that yield was significantly positively correlated with soil organic carbon content,nitrate nitrogen content,available phosphorus content,plant leaf number,leaf area index,total dry matter yield,potassium accumulation,nitrogen,phosphorus,and potassium fertilizer utilization rates,as well as fruit soluble sugar content,titratable acid content,and vitamin C content.[Conclusion]Straw trench burial at 30 cm combined with reduced potassium fertilizer application can improve soil quality,enhance pineapple growth and development,promote nutrient absorption,and maximize yield increases,making it the optimal pineapple cultivation management model for hot regions.关键词
菠萝/沟埋还田/钾肥减施/生长发育/产量品质Key words
pineapple/ditch burial and returning to the field/reduce the application of potassium fertilizer/growth and development/yield and quality分类
农业科技引用本文复制引用
贾睿宏,石代仁,叶进刚,王枭雄,孙梦洁,王新新,周杰荣,李昌珍,李长江..菠萝秸秆沟埋还田与钾肥减施对菠萝生长发育和产量品质的影响[J].江西农业大学学报,2025,47(6):1505-1516,12.基金项目
国家自然科学基金项目(32260724)、海南省自然科学基金项目(323RC424)和海南省重点研发项目(ZDYF2025XDNY064)Project supported by the National Natural Science Foundation of China(32260724),Hainan Provincial Natural Science Foundation of China(323RC424)and Key R&D Projects in Hainan Province(ZDYF2025XDNY064) 海南省研究生创新科研课题(Qhys2023-255)同时对本研究给予了资助谨致谢意! （32260724）
