土壤中不同含量Cd^(2+)对大麻、大豆幼苗生育的影响  

Effects of Different Contents of Cd2+ in Soil on Growth and Development of Hemp and Soybean Seedlings

作　　者：高中超[1] 孙磊[2] 王丽华 杜春影 张利国[2] 张久明[1] 王伟[1] 谷维[2] GAO Zhongchao;SUN Lei;WANG Lihua;DU Chunying;ZHANG Liguo;ZHANG Jiuming;WANG Wei;GU Wei(Institute of Soil,Fertilizer,Resources and Environment,Heilongjiang Academy of Agricultural Sciences,Harbin 150086;Institute of Economic Crops,Heilongjiang Academy of Agricultural Sciences,Harbin 150086;Saertu District Agricultural Bureau,Daqing,Heilongjiang 163000)

机构地区：[1]黑龙江省农业科学院土壤肥料与资源环境研究所,哈尔滨150086 [2]黑龙江省农业科学院,哈尔滨150086 [3]黑龙江省大庆市萨尔图区农业局,黑龙江大庆163000

出　　处：《中国农学通报》2022年第22期89-92,共4页Chinese Agricultural Science Bulletin

基　　金：黑龙江省现代农业产业技术协同创新体系“麻类(药用)体系”(YYM19STX-14);黑龙江省农业科学院“农业科技创新跨越工程”(MLCX20-9);黑龙江省农业科学院科技计划资助(2014ZD006);国家大豆产业技术体系(CARS-04)。

摘　　要：探究大麻耐重金属能力,为今后植物修复重金属污染土壤提供数据支持。以‘龙大麻5号’和‘黑农84’为试验材料,通过盆栽试验,研究土壤中喷施不同含量Cd^(2+)对大麻、大豆幼苗生长发育的影响。结果表明,低含量的Cd^(2+)(≤0.6 mg/kg)对大麻和大豆的根系活力及干物质积累略有促进作用,差异不显著。当土壤中20.0 mg/kg≥Cd^(2+)≥2.0 mg/kg时,2种作物的生长均受到抑制,与对照处理相比,大麻出苗率降低6.3%~100%,根系活力下降5.8%~77.8%,干物质积累降低6.6%~40.2%;与对照处理相比,大豆出苗率降低21.6%~100%,根系活力下降8.9%~100%,干物质积累降低27.4%~50.1%。当土壤中Cd^(2+)含量≥100 mg/kg时,大麻、大豆的出苗率均为零。对相同含量的Cd大麻耐受能力要强于大豆;对于重金属污染严重的地块,建议大麻优先于大豆种植。To explore the tolerance of hemp to heavy metals and provide data support for future phytoremediation of heavy metal contaminated soil,we used‘Long Dama 5’and‘Hei Nong 84’as experimental materials,conducted pot experiments to study the effect of spraying different contents of Cd^(2+)in the soil on the growth and development of hemp and soybean seedlings.The results show that low content of Cd^(2+)(≤0.6 mg/kg) could slightly promote the root activity and dry matter content of hemp and soybean.When the concentrate of Cdis between 2.0-20 mg/kg in soil,the growth of hemp and soybean are inhibited.Compared with Ttreatment (in hemp),the emergence rate of hemp of T2,T3 and T4 are decreased by 6.3%-100%,the root activity is decreased by 5.8%-77.8%,and dry matter content is decreased by 6.6%-40.2%.Compared with Ttreatment (in soybean),the emergence rate of soybean of T2,T3 and T4 are decreased by 21.6%-100%,the root activity is decreased by 8.9%-100%,and the dry matter content is decreased by 27.4%-50.1%.When the content of Cd^(2+)in soil is more than or equal to 100 mg/kg,the emergence rate of hemp and soybean are zero.The tolerance of hemp to cadmium is higher than that of soybean.For the plots with serious heavy metal pollution,it is suggested that hemp should be planted prior to soybean.

关 键 词：土壤 镉 大麻 大豆 幼苗 生育 

分 类 号：S3[农业科学—农艺学]