板栗关键生育期不同氮肥分配对土壤微量元素的影响  

Impacts of Different Nitrogen Fertilizer Allocation on Soil Trace Elements during the Critical Growth Period of Chestnut

作　　者：潘顺详 刘颂驰 张海娥 陈丽娜[1,2] PAN Shunxiang;LIU Songchi;ZHANG Haie;CHEN Lina(Hebei Normal University of Science&Technology,Qinhuangdao 066000,China;Hebei Key Laboratory of Crop Stress Biology,Qinhuangdao 066000,China;Engineering Research Center of Chestnut Industry Technology,Ministry of Education,Qinhuangdao 066000,China;Hebei Collaborative Innovation Center of Chestnut Industry,Qinhuangdao 066000,China)

机构地区：[1]河北科技师范学院,河北秦皇岛066000 [2]河北省作物逆境生物学重点实验室,河北秦皇岛066000 [3]板栗产业技术教育部工程研究中心,河北秦皇岛066000 [4]河北省板栗产业协同创新中心,河北秦皇岛066000

出　　处：《中国果菜》2024年第8期32-36,共5页China Fruit & Vegetable

基　　金：国家重点研发计划项目-主要经济林优质高产新品种创制与精准栽培技术(2022YFD2200400)。

摘　　要：氮肥的施用能够影响板栗对微量元素的吸收,从而引起土壤中微量元素含量的变化,本文通过分析氮肥在板栗各个关键生育期的分配,探究促进板栗吸收土壤微量元素的施氮策略。结果发现,板栗盛花期、果实膨大期至果实采收期土壤中Mn、Cu、Zn的元素含量总体呈现先降低后增加的趋势,土壤中Fe元素含量呈现不断降低的趋势。在氮肥总施用量均为750 kg/hm^(2)的情况下,N7处理土壤中Mn、Cu、Fe、Zn元素含量在各生育期均处于较低水平,表明N7处理即盛花期、果实膨大期与采收期按照2∶3∶5的比例施用氮肥,有利于板栗根系对Mn、Cu、Fe、Zn元素的吸收。The application of nitrogen fertilizer can influence the uptake of micronutrients by chestnut trees and induce alterations in soil micronutrient levels.This study investigated strategies to enhance chestnut tree assimilation of soil micronutrients through an analysis of nitrogen fertilizer allocation during key growth stages.It was found that there was generally an initial decrease followed by an increase in Mn,Cu,and Zn contents in soil.in Flowering perind,fruit enlargement periocl and fruit harvecest period.However,Fe content showed a continuous decline.Among all treatments tested,N7 treatment consistently exhibited lower levels of Mn,Cu,Fe and Zn contents in soil throughout each period,when the total application rate of nitrogen fertilizer was 750 kg/hm^(2).Therefore,applying a ratio of 2∶3∶5 for nitrogen fertilizer during the flowering period,fruit enlargement period and fruit harvest proved beneficial for promoting Mn,Cu,Fe and Zn absorption by chestnut trees.

关 键 词：板栗 氮肥分配 土壤 微量元素 

分 类 号：S642[农业科学—蔬菜学]