施用氯化钠对椰子幼苗叶片主要矿质营养元素的影响  

Effects of Sodium Chloride Application on Major Mineral Nutrient Elements in Leaves of Coconut Seedlings

作　　者：唐龙祥[1,2] 李阳 TANG Longxiang;LI Yang(Coconut Research Institute,CATAS,Wenchang 571339,China;Hainan Key Biological Laboratory of Tropical Oil Crops,Wenchang 571339,China;School of Tropical Agriculture and Forestry,Hainan University,Haikou 570228,China)

机构地区：[1]中国热带农业科学院椰子研究所,海南文昌571339 [2]海南省热带油料作物生物学重点实验室,海南文昌571339 [3]海南大学热带农林学院,海口570228

出　　处：《热带农业科技》2024年第3期16-20,共5页Tropical Agricultural Science & Technology

基　　金：海南耕地改良关键技术研究与示范专项(HNGDhs2015);海南省重点研发计划项目(ZDYF2022XDNY206);中央级公益性科研院所基本科研业务费专项(1630152023006)。

摘　　要：为深入了解施用氯化钠对椰子幼苗叶片主要营养元素的影响,设不同氯化钠施用量处理,分别于试验处理后的第0、30、60、90 d采集叶片测定氮、磷、钾、钙、镁、钠等主要营养元素含量。结果显示:各处理的叶片钠含量随着时间的增加而逐渐增加,90 d时钠含量比对照增加102.15%~163.44%。0.82%NaCl处理下,所测得的各元素含量在处理后第90 d均为最高,而高浓度处理(1.23%和1.64%NaCl)相较对照则会降低叶片N、P、K、Ca、Mg含量,表明施用适量NaCl可以促进椰子幼苗对以上各元素的吸收,但过量施用会产生离子拮抗效应。In order to study the effects of sodium chloride(NaCl)application on the main nutrient elements of coconut seedlings leaves,the leaves were collected and the contents of nitrogen(N),phosphorus(P),sodium(Na),potassium(K),calcium(Ca),magnesium(Mg)and other major nutrient elements were determined at day 0,day 30,day 60 and day 90 after the experimental treatment by different NaCl application rates.The results showed that the sodium content of each treatment increased gradually with the increase of time,and the sodium content at the 90th day was increased by 102.15%~163.44%compared with the control.The contents of each element measured under 0.82%NaCl treatment were the highest at the 90th day after treatment,while the contents of K,Ca,Mg,N and P in leaves of higher concentration treatment(1.23%and 1.64%NaCl)decreased compared with the control,indicating that applying appropriate amount of NaCl could promote the absorption of these elements by coconut seedlings,however,cation antagonism(antagonistic effect)may occur when NaCl overapplied.

关 键 词：椰子 幼苗 氯化钠 施用量 营养元素 

分 类 号：S667.4[农业科学—果树学]