外源CI對(duì)水稻幼苗生長(zhǎng)及鎘吸收轉(zhuǎn)運(yùn)的影響

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引用格式：，等.外源CI對(duì)水稻幼苗生長(zhǎng)及鎘吸收轉(zhuǎn)運(yùn)的影響[J].·湖南農(nóng)業(yè)科學(xué)，2025（5）：16-21.DOI：10.16498/j.cnki.hnnykx.2025.005.004

中圖分類號(hào)：S511；S365 文獻(xiàn)標(biāo)識(shí)碼：A 文章編號(hào)：1006-060X（2025）05-0016-06

Abstract：Theefectsofexogenouschlorieion（Cl）otherotfresh weight，abovegroundfreshweight，rootmorphology，iron （Fe）film formationontheoot surface，andcadmium（Cd）uptakeand transport inricesedingsof diferent Cdaccumulationtypes were investigatedbythequartzsandcultivation experiments ontheseedlings of tworicevarietiescultivated withdifferent Cl- application amounts and with and without Cd addition. The results showed that a moderate amount of exogenous Cl- （ ?4mmolL ）promoted the growth of rice seedlings，while excessive exogenous Cl- inhibited the growth.Under the condition of no Cd2+ addition， the root fresh weight，aboveodrhhttotalogtotacfefeasd as the application amount of Cl- increased，reaching the peaks in the treatment with 4 mmol/L Clapplication.Exogenous Cl- inhibited theFeflmformationontherotsurfaceofricesedlings，andthecontentofFefmontheootsufacedecreasedsignificantlywiththe increase in the application amount of Cl- .Theaddition of 4mg/kgCd2+ seriously impeded the growth of rice seedlings. The root fresh weight，abovegodfrshightotalotlegthotsaceaadotvouestdceddtneadiths in the application amount of Cl- ，reaching the lowestvaluesin the treatment with 4 mmol/L C1- application. Exogenous Cl- affected the Cd uptake and transport in rice seedlings. Under the condition of adding 4mg/kgCd2+ ，as the application amount of Cl- increased， the translocationcntofCdiingseead，dtetetofCdinotsedicantlydac than that in the aboveground part.The high Cd-accumulating Variety'Tianyou Huazhan' was more sensitive to Cl- than the low Cdacumulatingetyiagu998addrogeablitytbsobdtrasptCdUnderthalcatioamotofo Huazhan'adleetoFotfcedtghtoteaevdCdotot Key words： exogenous chlorine; rice seedlings; cadmium （Cd）; root traits; translocation coefficient

氯離子（ Cl- ）作為最常見的伴生陰離子，其來源非常廣泛。（剩余10778字）