中国土壤与肥料Issue(11)：71-78,8.DOI:10.11838/sfsc.1673-6257.25138
氮磷钾配施铁镁肥对猕猴桃叶片生理和果实产量品质的影响
Effects of nitrogen,phosphorus and potassium combined with iron and magnesium fertilizer on leaf physiology,fruit yield and quality of kiwifruit
摘要
Abstract
The effects of combined application of iron and magnesium fertilizers on the photosynthetic physiological characteristics and fruit yield and quality of kiwifruit on the basis of conventional application of nitrogen,phosphorus and potassium fertilizers were explored,in order to provide a scientific basis for the scientific application of iron and magnesium fertilizers to improve the nutrition of medium and trace elements and improve the yield and quality of kiwifruit.A two-year(2023-2024)field experiment was conducted in Penghua village,Zundao town,Mianzhu county,Sichuan province,with 10-year-old'Hongshi No.2'kiwifruit as the test material.Four treatments were set up:conventional fertilization(NPK),combined application of iron fertilizer(NPK+Fe),combined application of magnesium fertilizer(NPK+Mg),combined application of iron fertilizer+iron fertilizer(NPK+Fe+Mg).The photosynthetic physiological characteristics(chlorophyll content,intercellular CO2 concentration,stomatal conductance,net photosynthetic rate,transpiration rate and 1,5-bisphosphate ribulose carboxylase/oxygenase activity),fruit morphology(transverse diameter,longitudinal diameter),fresh fruit yield(single fruit weight,total weight)and quality(soluble solids,soluble sugar,titratable acid and vitamin C)of kiwifruit leaves were studied.The results showed that,compared with NPK,the chlorophyll content of kiwifruit leaves treated with NPK+Fe,NPK+Mg,NPK+Fe+Mg treatments were increased by 7.95%-20.47%,and the net photosynthetic rate was increased by 5.93%-8.88%.The large fruit rate of kiwifruit was increased by 2.21%-4.98%,and the yield increased was by 6.36%-9.71%.The contents of soluble sugar,vitamin C,soluble solids and sugar-acid ratio were increased by 13.01%-19.11%,2.77%-8.29%,0.56%-1.11%and 4.08%-8.80%,respectively,and the output value was increased by 6.70%-11.38%.On the basis of conventional nitrogen,phosphorus and potassium,the application of iron and magnesium fertilizers significantly improved the photosynthetic physiological characteristics of kiwifruit leaves,increased chlorophyll content and photosynthetic rate,thereby promoting the growth of kiwifruit,significantly increasing yield and improving fruit quality.Compared with iron fertilizer,the effect of magnesium fertilizer was better.关键词
猕猴桃/铁肥/镁肥/光合生理特性/果实品质Key words
kiwifruit/iron fertilizer/magnesium fertilizer/photosynthetic physiological characteristics/fruit quality引用本文复制引用
XUE Zi-yue,FAN Xiao-dong,XU Kai-wei,PENG Dan-dan,ZHAO Shu-guang,WANG Xiao-ling,CHEN Yuan-xue..氮磷钾配施铁镁肥对猕猴桃叶片生理和果实产量品质的影响[J].中国土壤与肥料,2025,(11):71-78,8.基金项目
四川美丰绿色高效作物专用肥产品开发项目(CAGD-SCMF2022) （CAGD-SCMF2022）
四川省科技计划项目(2025YFHZ0115) （2025YFHZ0115）
成都市重点研发项目(2024YF0502138SN). （2024YF0502138SN）
