稀土作用下水花生对氮元素吸收能力的研究  

Study on the absorption capacity of peanut to nitrogen element under the action of rare earth

作　　者：詹林琦 邵波[1] Zhan Lin-qi;Shao Bo(Environmental engineering,College of biological and environmental engineering,Zhejiang Shuren university,Zhejiang Hangzhou 310000)

机构地区：[1]浙江树人大学生物与环境工程学院,浙江杭州310000

出　　处：《江西化工》2020年第4期203-207,共5页Jiangxi Chemical Industry

摘　　要：本次实验以水花生作为研究对象,采用水培的方法养殖,用浓硫酸—过氧化氢法对水花生叶片进行消解,采用纳氏比色法对叶片中的总氮含量进行测定,研究了稀土铈对水花生生长和对体内总氮吸收能力的影响。稀土的浓度梯度为0mg/L,2mg/L,5mg/L,10mg/L,尿素的浓度梯度为0mg/L,400mg/L,800mg/L,1200mg/L。研究表明:当稀土浓度一定时,800mg/L的尿素浓度吸收氮的能力最强;当尿素浓度一定时,5mg/L的稀土浓度吸收氮的能力最强。所以,施加一定浓度的稀土能够有效的促进水花生对氮的吸收能力。In this experiment,peanuts were used as the research object,the method of hydroponics was used,the method of concentrated sulfuric acid hydrogen peroxide was used to digest the leaves of peanuts,the content of total nitrogen in the leaves was determined by Nessler’s colorimetry,and the effect of Rare Earth Cerium on the growth of peanuts and the absorption capacity of total nitrogen in vivo was studied. The concentration gradient of rare earth is 0 mg/L,2 mg/L,5 mg/L,10 mg/L,urea is 0 mg/L,400 mg/L,800 mg/L,1200 mg/L. The results show that the urea concentration of 800 mg/L has the strongest ability to absorb nitrogen,while the urea concentration of 5 mg/L has the strongest ability to absorb nitrogen. Therefore,the application of a certain concentration of rare earth can effectively promote the nitrogen absorption capacity of peanuts.

关 键 词：水花生 稀土 氮素 

分 类 号：Q945[生物学—植物学]