茶叶科学
茶葉科學
다협과학
Journal of Tea Science
2015年
5期
429-436
,共8页
周超%胡玉荣%曾建明%杨坚%陈利燕
週超%鬍玉榮%曾建明%楊堅%陳利燕
주초%호옥영%증건명%양견%진리연
土壤硒含量%土壤水分%pH值%茶树硒累积
土壤硒含量%土壤水分%pH值%茶樹硒纍積
토양서함량%토양수분%pH치%다수서루적
soil selenium content%soil moisture content%pHvalue%tea[Camellia sinensis(L.) O. Kuntze]selenium accumulate
以中茶108为供试品种,采用盆栽和水培试验,研究了不同土壤硒含量、干旱胁迫以及不同pH值对茶树硒吸收特性的影响。结果表明,茶树硒含量与土壤硒含量呈正相关;干旱胁迫会造成茶树对土壤中硒的吸收速率降低,与正常生长的茶树相比,硒吸收总量显著降低;土壤含水率在90%时,茶树根部对硒的累积总量最高,达到0.527 mg·kg-1,而在土壤含水率50%时,根部硒累积总量为0.301 mg·kg-1,两者差异极显著。在不同pH值的培养条件下,72 h内各处理叶片均达到富硒水平,处理间叶片硒含量未出现显著差异;处理28 d后,各处理间叶片硒含量具有显著差异,以pH值3.5时最高,极显著高于其他各处理。
以中茶108為供試品種,採用盆栽和水培試驗,研究瞭不同土壤硒含量、榦旱脅迫以及不同pH值對茶樹硒吸收特性的影響。結果錶明,茶樹硒含量與土壤硒含量呈正相關;榦旱脅迫會造成茶樹對土壤中硒的吸收速率降低,與正常生長的茶樹相比,硒吸收總量顯著降低;土壤含水率在90%時,茶樹根部對硒的纍積總量最高,達到0.527 mg·kg-1,而在土壤含水率50%時,根部硒纍積總量為0.301 mg·kg-1,兩者差異極顯著。在不同pH值的培養條件下,72 h內各處理葉片均達到富硒水平,處理間葉片硒含量未齣現顯著差異;處理28 d後,各處理間葉片硒含量具有顯著差異,以pH值3.5時最高,極顯著高于其他各處理。
이중다108위공시품충,채용분재화수배시험,연구료불동토양서함량、간한협박이급불동pH치대다수서흡수특성적영향。결과표명,다수서함량여토양서함량정정상관;간한협박회조성다수대토양중서적흡수속솔강저,여정상생장적다수상비,서흡수총량현저강저;토양함수솔재90%시,다수근부대서적루적총량최고,체도0.527 mg·kg-1,이재토양함수솔50%시,근부서루적총량위0.301 mg·kg-1,량자차이겁현저。재불동pH치적배양조건하,72 h내각처리협편균체도부서수평,처리간협편서함량미출현현저차이;처리28 d후,각처리간협편서함량구유현저차이,이pH치3.5시최고,겁현저고우기타각처리。
In order to establish the effects of different soil selenium content, soil moisture content and pHvalueon the seleniumaccumulationin tea plant,Zhongcha 108 wasused asinvestigationmaterials,includingpot experiment and a hydroponic experiment. The result showed that the selenium content in tea plant and the soil selenium content were positively correlated. Drought stress reduced the absorption rate of teaplantfrom soil. Whenthe soil moisture contentwas 90%,the root accumulated the highestselenium(0.527mg·kg-1),and showedextremely significant difference withthatplanted inthe soil moisture contentwas 50%(0.301mg·kg-1).Under different pHconditions,the leavesfrom various treatmentsaccumulate the selenium at therich-seleniumlevelwithin 72 hours, and there is no significant difference in leavesbetween various treatments. After 28 days,there is a significant differencebetween leavesfrom various treatments.The highest selenium content of leaves appeared while the pH value is 3.5, significantlyhigher thanthose inother treatments.It can be inferred thatsoil selenium content, soil moisture content and pHvalue is closely related to the selenium accumulationof teaplant.