两种积累型番茄对不同难溶态Cd活化与吸收的差异  

Difference in activation and absorption of different insoluble Cd between two tomato varieties with different Cd accumulation

作　　者：张玉坤 高夕彤 王小敏[1,2] 段亚军 吕诗 王雪 路倩影[1] 冯圣东 杨志新[1,2] ZHANG Yukun;GAO Xitong;WANG Xiaomin;DUAN Yajun;LYU Shi;WANG Xue;LU Qianying;FENG Shengdong;YANG Zhixin(School of Resources and Environmental Sciences,Hebei Agricultural University,Baoding 071000,China;State Key Laboratory of North China Crop Improvement and Regulation,Baoding 071000,China;Hebei Agricultural University Experimental Farm,Baoding 071000,China)

机构地区：[1]河北农业大学资源与环境科学学院,保定071000 [2]省部共建华北作物改良与调控国家重点实验室,保定071000 [3]河北农业大学实验农场,保定071000

出　　处：《中国生态农业学报（中英文）》2022年第8期1355-1361,共7页Chinese Journal of Eco-Agriculture

基　　金：河北省重点研发计划项目(19223811D);省部共建华北作物改良与调控国家重点实验室开放课题;国家重点研发技术专项(2018YFD0800402);河北省专业学位案例库教学项目(KCJSZ2021072)资助。

摘　　要：本研究以两种Cd积累型番茄品种(高积累型‘合作8’,低积累型‘普罗旺斯’)幼苗为研究对象,通过水培试验,研究其对两种难溶态Cd(CdS和CdCO_(3))的活化效果及吸收差异特征,并分析两种难溶态Cd对植株的生长效应,为Cd轻度污染土壤中番茄品种的合理选择提供依据。结果表明:在活化效果方面,‘合作8’对难溶态Cd的活化效果显著高于‘普罗旺斯’。CdCO_(3)和CdS处理下高积累型品种‘合作8’使溶液中有效态Cd浓度分别比添加CdCO_(3)和CdS但未种植番茄的处理显著提高62.1%和51.0%(P<0.05);而低积累型‘普罗旺斯’在CdCO_(3)处理下溶液中有效态Cd浓度比对照增加39.4%(P<0.05),但在CdS处理下有效Cd浓度变化不明显。在植株Cd吸收方面,CdS和CdCO_(3)处理下‘合作8’地上部与根部Cd含量均显著(P<0.05)高于‘普罗旺斯’,地上部分别提高80.2%和105.2%,根部分别提高111.7%和153.8%。与未添加难溶性Cd处理相比,CdS处理下‘普罗旺斯’株高、根长和生物量分别提高15.0%、10.1%和15.5%(P<0.05),而‘合作8’株高、根长和生物量分别降低5.0%、9.8%和11.3%(P<0.05);同时,2种难溶性Cd处理下‘合作8’的株高、根长和生物量均显著低于‘普罗旺斯’(P<0.05)。综上,高积累型番茄品种对两种难溶态Cd活化的效果显著高于低积累型番茄品种,显著提高了Cd的生物有效性,高积累型品种对难溶态CdS和CdCO_(3)的吸收也显著高于低积累型品种,使高积累型番茄植株生长受到了显著抑制。Soil Cd pollution is becoming increasingly hazardous,and the effective state of Cd largely affects its biological effectiveness.The difference in the activation of insoluble Cd directly affects the uptake and accumulation of Cd in vegetables,and there are obvious differences in the uptake and accumulation capacity of different tomato varieties for Cd.However,the difference in the activation of Cd insoluble forms of CdS and CdCO_(3) by different Cd-accumulation tomato varieties remains unclear.Therefore,in this study,the seedlings of two tomato varieties with different Cd-accumulation capacity(high-Cd-accumulation type‘Cooperative 8’and low-Cd-accumulation type‘Provence’)were used as research objects.The activation effects and absorption differences of two types of insoluble Cd(CdS and CdCO_(3))were studied through hydroponic experiments,and the effects of two types of insoluble Cd on plant growth were analyzed.The purpose of this study was to provide a theoretical basis for reducing the risk of tomato Cd pollution,ensuring the safety of tomato production and reasonable selection of tomato varieties.The results showed that the activation effect of CdCO_(3) and CdS of high-Cd-accumulation type‘Cooperative 8’significantly increased the available Cd concentration in solution by 62.1%and 51.0%compared to the Cd concentration in non-planting tomato solution(P<0.05),while the low-Cd-accumulation type‘Provence’significantly promoted the dissolution of insoluble CdCO_(3) by 39.4%(P<0.05).However,the activation of insoluble CdS was not significant,and the activation of insoluble Cd by‘Cooperative 8’was significantly higher than that of‘Provence’.In terms of plant Cd uptake,the shoot and root Cd contents of‘Cooperative 8’were significantly higher than those of‘Provence’under insoluble CdS treatment,which increased by 80.2%and 111.7%(P<0.05),respectively.Under insoluble CdCO_(3) treatment,the shoot and root Cd contents of‘Cooperative 8’were 105.2%and 153.8%higher than those of‘Provence,�

关 键 词：番茄 Cd积累型 难溶态Cd Cd活化 CD吸收 

分 类 号：S641.2[农业科学—蔬菜学]