农业资源与环境学报2026，Vol.43Issue(5)：1208-1218,11.DOI:10.13254/j.jare.2025.0472
施钾对库尔勒香梨枝条矿质元素含量及产量的影响
Effects of potassium application on the mineral element content in branches and yield of Korla fragrant pear
摘要
Abstract
This study aims to investigate the effects of potassium fertilizer on the mineral element content in branches and the yield of Korla fragrant pear trees(Pyrus sinkiangensis Yü),and to determine the optimal potassium application rate.Seven-to eight-year-old Korla fragrant pear trees under drip irrigation were subjected to four potassium treatments:K0(control,0 kg·hm-2),K75(75 kg·hm-2),K150(150 kg·hm-2),and K225(225 kg·hm-2).The correlations between potassium application rates,branch mineral element content,and pear yield were analyzed.The results showed that appropriate potassium application significantly increased branch mineral element content and yield,while excessive potassium inhibited mineral uptake.Compared with K0,the K75 treatment significantly enhanced K content in new shoots and Ca and Mg content in branches,but had no significant effect on other elements.Fruit mass increased by 4.67%,while yield per plant showed no significant change.The K150 treatment significantly promoted N,P,K,Fe,Mn,and Cu contents in branches,with fruit mass,fruit number per plant,and yield increasing by 18.19%,24.81%,and 47.36%,respectively.The K225 treatment significantly increased N,P,and K content but had no effect on medium and trace elements.Fruit mass and yield increased by 10.98%and 28.93%,respectively.Potassium fertilizer treatments showed a positive correlation with N,P,K,Fe,Mn,Cu,and Zn contents in branches,while a negative correlation with Ca and Mg contents.At the mature stage,the contents of N,P,K,Mn,and Zn in branches exhibited significant and extremely significant positive correlations with Korla fragrant pear yield,and there was a significant positive correlation between potassium fertilizer treatments and pear yield.The K150 treatment(150 kg·hm-2)is recommended for seven-to eight-year-old Korla fragrant pear trees,as it significantly enhances branch mineral element content,improves tree vitality,and maximizes yield efficiency.关键词
钾肥/库尔勒香梨/枝条矿质元素/产量/相关性Key words
potassium fertilizer/Korla fragrant pear/branch mineral element/yield/correlation引用本文复制引用
严琳森,沈幸,何展一,李杰,杨乐乐,柴仲平..施钾对库尔勒香梨枝条矿质元素含量及产量的影响[J].农业资源与环境学报,2026,43(5):1208-1218,11.基金项目
新疆林果产业技术体系-土壤肥力与培育项目(XJLGCYJSTX05-2024-03) （XJLGCYJSTX05-2024-03）
新疆维吾尔自治区"三农"骨干人才培养项目(2022SNGGGCC017) （2022SNGGGCC017）
国家自然科学基金项目(32360802,31960639) （32360802,31960639）
