| 王南南,彭婷,谢翠娟,苗诗雪,王峥,马锋旺.8个猕猴桃品种叶片矿质养分含量的生长期变化及其相关性[J].中国南方果树,2020,49(1): |
| 8个猕猴桃品种叶片矿质养分含量的生长期变化及其相关性 |
| Changes in leaf nutrient concentration and their correlation of eight kiwifruit cultivars |
| 投稿时间：2019-09-14 修订日期：2019-10-11 |
| DOI：10.13938/j.issn.1007-1431.20190523 |
| 中文关键词: 猕猴桃 品种 养分变化 相关性分析 养分失衡 |
| 英文关键词:kiwifruit cultivar change in nutrient concentration correlation analysis nutrient disorder |
| 基金项目:西北农林科技大学博士科研启动费（Z109021611）、陕西省重点研发计划一般项目（2018NY-087）、陕西省引进博士资助经费（A279021839） |
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| 中文摘要: |
| 以8个猕猴桃品种（‘海沃德’、‘米良1号’、‘徐香’、‘金香’、‘哑特’、‘翠香’、‘农大金猕’、‘金魁’）为试材，连续两年分析猕猴桃叶片氮、磷、钾、钙、镁、铁、锰、铜、锌、硼等10种元素含量的生长期变化特点及其相关性。结果表明，不同猕猴桃品种叶片养分含量差异显著。其中，‘海沃德’叶片氮、磷含量较高，钙、镁含量较低；‘米良1号’叶片氮、钙含量较高；‘翠香’叶片钙含量较高，氮、磷、钾含量较低；‘农大金猕’和‘金魁’叶片氮、钾均较低。猕猴桃叶片氮、磷、钾含量从坐果期至果实快速膨大期不断下降，之后在果实缓慢生长期和果实充实成熟期氮持续下降，钾维持稳定，磷则有所回升；叶片钙、镁、铁、锰、锌、硼含量均随着生长期的推进而呈升高趋势，但不同元素初始升高和后期稳定的时间点略有差别。叶片氮、磷与钾之间呈显著正相关，与钙、镁、铁、锌、硼之间呈显著负相关；钙、镁、铁、锰、铜、锌、硼等中微量元素之间多呈显著正相关。本研究为生产上不同猕猴桃品种的科学施肥和高效栽培提供了理论依据。 |
| 英文摘要: |
| A two-year experiment was carried out to investigate the changes in leaf nutrient concentration (i.e., N, P, K, Ca, Mg, Fe, Mn, Cu, Zn, and B) and their correlation of eight kiwifruit cultivars, including ‘Hayward’, ‘Miliang 1’, ‘Xuxiang’, ‘Jinxiang’, ‘Yate’, ‘Cuixiang’, ‘Nongdajinmi’, and ‘Jinkui’. The results showed that the nutrient concentrations of kiwifruit leaves differed significantly among cultivars. The leaf of ‘Hayward’ had higher N and P, but lower Ca and Mg; the ‘Miliang 1’ was characterized by higher leaf N and Ca; the‘Cuixiang’ had higher Ca, but lower N, P and K; and the ‘Nongdajinmi’ and ‘Jinkui’ displayed lower leaf N and K. The N, P and K concentration of kiwifruit leaves sharply decreased from fruit set to fruit enlarging periods, but afterwards they diverged from fruit slow-growing to fruit harvest periods: leaf N declined continuously, leaf K remained stable, and leaf P rose again. Moreover, leaf Ca, Mg, Fe, Mn, Zn and B concentration increased steadily with the advance of fruit growth stage, with slightly differences in time points when began to increase or remained constant. Additionally, leaf N and P positively correlated with leaf K, but negatively correlated with leaf Ca, Mg, Fe, Zn and B; leaf Ca, Mg, Fe, Mn, Cu, Zn and B positively correlated with one another. These results provide a theoretical basis for scientific fertilization and effective cultivation of various kiwifruit cultivars under field conditions. |
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