| 刘晓奇,赖美金,吴云龙,冷湘林,徐守俊,沈宏.减氮配施有机肥对柑橘生长及产量品质的影响+增刊[J].中国南方果树,2025,54(S1): |
| 减氮配施有机肥对柑橘生长及产量品质的影响+增刊 |
| Effects of Reduced Nitrogen Fertilizer Combined with Organic Fertilizers on Citrus Growth, Yield, and Fruit Quality |
| 投稿时间：2025-07-18 修订日期：2025-08-11 |
| DOI： |
| 中文关键词: 茂谷柑 氮肥减量 有机肥 土壤养分 品质 产量 |
| 英文关键词:‘Murcottt’ angerine nitrogen fertilizer reduction organic fertilizer soil nutrients quality yield |
| 基金项目:2024年中央耕地建设与利用（化肥减量增效田间试验）项目 |
|
| 摘要点击次数: 136 |
| 全文下载次数: 0 |
| 中文摘要: |
| 长期过量施氮不仅导致柑橘园土壤酸化和树势衰退，还明显降低柑橘的产量和品质。本研究以8年生茂谷柑为试验材料，通过两年田间试验，探究减氮30%配施有机肥（0、10、20、30 kg/株）对其根层土壤养分、植株生长及产量品质的影响。结果表明：减氮30%配施有机肥20 kg/株处理对柑橘产量品质的提升效果最好，相较于常规施肥，减氮30%配施有机肥20 kg/株处理土壤pH提高了0.47个单位，根层土壤有机质、碱解氮、有效磷和速效钾含量分别提高14.95%、7.58%、10.83%和8.78%；0-10cm土层根系生物量增加15.10%，新梢长度增加12.02%，柑橘平均果径、单果质量和产量分别增加13.16%、12.69%和12.65%，果实的可溶性糖和维生素C含量分别提高15.45%和13.96%。上述结果表明，适度减氮配施有机肥能有效缓解茂谷柑园土壤酸化，提高土壤有效养分含量，促进根系与树体生长，进而显著提高果实产量、品质及经济效益，这为华南地区柑橘产业的可持续发展提供了科学支撑。 |
| 英文摘要: |
| Long-term excessive nitrogen application not only lead to soil acidification and weakness of citrus tree in citrus orchards, but also significantly reduces citrus yield and fruit quality. Using eight-year-old ‘Murcottt’ angerine trees as experimental material, a two-year field experiment was conducted to investigate the effects of 30% nitrogen reduction combined with organic fertilizer application (0, 10, 20, and 30 kg per tree) on rhizosphere soil nutrients, plant growth, yield and fruit quality. The results demonstrated that the treatment combining 30% nitrogen reduction with 20 kg organic fertilizer per tree showed optimal performance in enhancing yield and fruit quality. Compared with conventional fertilization, this treatment increased soil pH by 0.47 units, enhanced rhizosphere soil organic matter, available nitrogen, available phosphorus and available potassium by 14.95%, 7.58%, 10.83% and 8.78%, respectively, improved root biomass (0-10 cm soil layer) and new shoot length by 15.10% and 12.02%, increased average fruit diameter, single fruit weight and yield by 13.16%, 12.69% and 12.65%. In addition, citrus soluble sugar and vitamin C content were increased by 15.45% and 13.96%,These findings indicate that moderate nitrogen reduction combined with organic fertilizer application can effectively alleviate soil acidification, improve soil nutrient availability, promote root and canopy growth, and consequently enhance fruit yield, quality and economic benefits in ‘Murcottt’ angerine orchards. This study provides scientific support for sustainable citrus production in South China. |
| 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
