Effects of Substrate Complexing Light Rare Earth on Growth,Cd Absorption and Organ Distribution of Sweet Pepper(Capsicum annuum ***)

作     者：王甲辰 左强 邹国元 陈曦 张琳 谷佳林 宫延刚 

作者机构：北京市农林科学院植物营养与资源研究所北京100097 内蒙古师范大学民族艺术学院内蒙古呼和浩特011517 

基　　金：Special Fund for Scientific Research for the Public Interest(20100314) National Key Technology R&D Program(2007BAD89B03) Enterprise Service Program by Technicians in the Ministry of Science and Technology(2009GJA00026)~~ 

出 版 物：《Agricultural Science & Technology》 (农业科学与技术（英文版）)

年 卷 期：2012年第13卷第11期

页      码：2394-2399页

摘      要：[Objective] The aim was to research effects of substrate complexing light rare earth on growth, Cd absorption and organ distribution of sweet pepper to pro- vide references for development of rhizosphere regulation products in farmland seri- ously polluted. [Method] In the test, effects of substrate cakes （at the same size） and light rare earth （in different doses） on growth, Cd absorption and distribution of green peppers under stress from Cd were explored with a pot experiment. [Result] When 40 mg/kg of rare earth was added into a substrate cake, plant height of pep- per seedlings and the dry weight increased by 21.52% and 11.11%, compared with control group; when Cd was at 5.19 mg/kg （a highly graded pollution）, the shoot biomass, olant biomass and dry weight of fruits all enhanced significantly, but root system changed little in the groups where substrate cakes were saved, compared with the group where the substrate cake was washed away. No matter RE was added into substrate cakes or not, root system was significantly inhibited by Cd stress （5.19 mg/kg）, but RE at proper dose improved growth of green pepper and had little effect on fruit yielding. In addition, RE had little inhibition on Cd content in roots. RE at 10 mg/kg promoted Cd contents in stems and leaves, but reduced the content in fruits substantially. The regressive equation of Cd content and rare dose in leaves was as follows： y=4E-05x%0.009 6x＋0.655 6, FF=0.542 6; the regression equations of Cd content in root, stem and fruit did not make sense. [Conclusion] The experiment lays foundation for further research on heavy metals rhizosphere complexing controlling.

主 题 词：Rhizosphere regulation Substrate cake Light rare earth Cd absorption 

学科分类：081704[081704] 07[理学] 08[工学] 0817[工学-轻工类] 09[农学] 0703[理学-化学类] 0902[农学-自然保护与环境生态类] 070301[070301] 090202[090202] 

D　O　I：10.16175/j.cnki.1009-4229.2012.11.038

馆 藏 号：203571680...