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| 叶面喷施不同钾源的山梨醇螯合钾对芹菜产量、品质及钾素吸收的影响 |
| Absorption and utilization effect of different foliar spraying potassium sources of sorbitol-chelated potassium on celery yield and quality |
| Received:November 24, 2024 |
| DOI：10.13254/j.jare.2024.0919 |
| 中文关键词: 芹菜，山梨醇螯合钾，钾源，产量与品质，钾吸收 |
| 英文关键词: celery, sorbitol-chelated potassium, potassium source, yield and quality, potassium absorption |
| 基金项目:国家自然科学基金项目（31972516）；山东省重点研发计划项目（2017GNC11116） |
| Author Name | Affiliation | E-mail | | ZHANG Ziqi | School of Environment and Geography, Qingdao University, Qingdao 266071, China | | | ZHANG Haili | School of Environment and Geography, Qingdao University, Qingdao 266071, China | | | ZHANG Jing | School of Environment and Geography, Qingdao University, Qingdao 266071, China | | | SHI Xiang | School of Environment and Geography, Qingdao University, Qingdao 266071, China | | | ZHANG Mingxia | School of Environment and Geography, Qingdao University, Qingdao 266071, China | | | ZHENG Ruili | School of Environment and Geography, Qingdao University, Qingdao 266071, China | | | GAO Zhien | School of Environment and Geography, Qingdao University, Qingdao 266071, China | | | LIU Kezhong | School of Environment and Geography, Qingdao University, Qingdao 266071, China | liukez@hotmail.com | | YAN Dongyun | School of Environment and Geography, Qingdao University, Qingdao 266071, China | yandongyun666@hotmail.com |
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| 中文摘要: |
| 我国优质钾资源匮乏，通过改变钾元素的存在形态促进植物对钾素的吸收在农业生产中具有重要意义。本研究于2021—2022年在山东省青岛市开展连续两季的田间试验，在常规施肥基础上进行芹菜不同生育时期的喷施，清水喷施为对照（CK），探究以氯化钾（CP）、硝酸钾（NP）、乙酸钾（AP）、甲酸钾（FP）、硫酸钾（SP）为钾源的山梨醇螯合钾对芹菜生长及根区土壤有效钾素吸收的影响，明确以上五种山梨醇螯合钾中最适合芹菜生长的钾源，为芹菜合理施用钾肥提供理论依据。结果表明：不同钾源的山梨醇螯合钾显著影响芹菜产量，与CK处理相比，CP、NP、AP处理分别增加14.63%、23.54%、10.02%。山梨醇螯合钾能有效改善芹菜品质，降低芹菜叶柄、叶中硝酸盐含量，影响维生素C含量，提高可溶性蛋白、可溶性固形物含量。与CK处理相比，CP、NP、AP处理叶柄硝酸盐含量分别降低51.71%、31.47%、28.66%，维生素C含量分别增加27.98%、17.12%、13.92%。山梨醇螯合钾的喷施可提高收获期芹菜钾素含量与积累量，降低根区土壤有效钾含量。处理综合表现为净利润的提高，CP、NP、AP处理与CK处理相比分别增加14.07%、23.01%、9.13%。结构分析方程（SEM）表明，山梨醇螯合钾主要通过增强芹菜钾素积累影响芹菜农艺性状，进而提升产量。综上，在常规施肥基础上喷施山梨醇螯合钾可促进芹菜植株对钾素的吸收和积累，其中以硝酸钾为钾源的山梨醇螯合钾在芹菜上的综合应用效果更突出。 |
| 英文摘要: |
| High-quality potassium resources are scarce in China. It is important to improve the absorption of potassium in plants by changing the existing form of potassium element in agricultural. In this study, a two-season field experiment（in 2021 and 2022）was conducted in Qingdao, Shandong Province. In addition to conventional fertilization, celery spraying experiments were carried out at different growth stages with five treatments, by using conventional fertilization as the reference（CK）, exploring the effects of potassium sorbitol chelated with KCl（CP）, KNO3（NP）, CH3COOK（AP）, HCOOK（FP）, K2SO4（SP）as potassium sources on celery growth, soil potassium absorption, in order to find the most suitable sorbitol-chelated potassium among the five types of sorbitol-chelate potassium mentioned above for celery and provide a theoretical basis for the rational application of potassium fertilizer in celery. The results showed that different potassium sources synthesized sorbitol-chelated potassium fertilizer significantly affected celery yield. Compared with CK treatment, CP, NP, and AP treatments increased 14.63%, 23.54% and 10.02%, respectively. Sorbitol-chelated potassium fertilizer could effectively enhance the quality of celery, reduce nitrate content in celery petioles and leaves, dramatically affect vitamin C content, and substantially increase soluble protein and soluble solid content in celery petioles and leaves. Compared with CK treatment, CP, NP, and AP treatments reduced the content of petiole nitrate by 51.71%, 31.47%, 28.66%, respectively, and increased the content of petiole vitamin C by 27.98%, 17.12%, 13.92%, respectively. The application of sorbitol-chelated potassium significantly increased the content and accumulation of potassium in celery during harvest, and decreased the content of available potassium in root zone soil. The comprehensive performance was the improvement of net profit, CP, NP and AP treatment increased by 14.07%, 23.01% and 9.13% compared with CK treatment, respectively. The structural equation modeling（SEM）indicated that the spraying of potassium chelated by sorbitol mainly affectd the agronomic traits of celery by affecting the accumulation of potassium in celery, thereby affecting yield. In summary, with the same potassium usage amount, compared with conventional fertilization, sorbitol-chelated potassium can better promote the absorption and accumulation of potassium in celery plants. Among them, potassium nitrate as the potassium source of sorbitol-chelated potassium has the best comprehensive application effect on celery. |
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