CAJ | 학술논문

为了认识土壤砷污染与植物砷含量的关系，进行土壤加砷盆栽魔芋试验．结果表明，本实验条件下，魔芋球茎和茎叶的砷含量范围分别为2．12～14．98和1．23～21．23μg g -1，均与土壤加砷量呈极显著的线性相关．在对照下，球茎砷含量高于茎叶，在土壤加砷下，茎叶的砷含量高于球茎．魔芋的富砷量与土壤加砷量呈极显著的线性相关，在低土壤砷水平下，魔芋球茎富砷量大于茎叶，高土壤砷水平下，魔芋茎叶的富砷量大于球茎．同对照相比，土壤加砷降低了魔芋球茎富砷量所占比例，增加了魔芋茎叶富砷量所占比例，低土壤砷水平下，球茎富砷量所占比例高于茎叶，高土壤砷水平下，茎叶富砷量所占比例高于球茎．魔芋对土壤加砷的利用量与土壤加砷量呈极显著的线性相关，魔芋对土壤加砷的利用率只有0．25‰～0．84‰．魔芋球茎和茎叶对砷的富集系数分别为0．03～0．13和0．07～0．13，同对照相比，土壤加砷降低了球茎的富集系数，增加了茎叶的富集系数，在对照下，球茎的富集系数高于茎叶，在土壤加砷下，茎叶富集系数高于球茎．总之，土壤加砷不仅显著增加了魔芋球茎和茎叶的砷含量，也改变砷在魔芋体内的分布格局，魔芋是吸收利用土壤砷能力弱的植物，魔芋通过将所吸收的砷转移到地上部分以适应砷污染土壤环境．
위료인식토양신오염여식물신함량적관계，진행토양가신분재마우시험．결과표명，본실험조건하，마우구경화경협적신함량범위분별위2．12～14．98화1．23～21．23μg g -1，균여토양가신량정겁현저적선성상관．재대조하，구경신함량고우경협，재토양가신하，경협적신함량고우구경．마우적부신량여토양가신량정겁현저적선성상관，재저토양신수평하，마우구경부신량대우경협，고토양신수평하，마우경협적부신량대우구경．동대조상비，토양가신강저료마우구경부신량소점비례，증가료마우경협부신량소점비례，저토양신수평하，구경부신량소점비례고우경협，고토양신수평하，경협부신량소점비례고우구경．마우대토양가신적이용량여토양가신량정겁현저적선성상관，마우대토양가신적이용솔지유0．25‰～0．84‰．마우구경화경협대신적부집계수분별위0．03～0．13화0．07～0．13，동대조상비，토양가신강저료구경적부집계수，증가료경협적부집계수，재대조하，구경적부집계수고우경협，재토양가신하，경협부집계수고우구경．총지，토양가신불부현저증가료마우구경화경협적신함량，야개변신재마우체내적분포격국，마우시흡수이용토양신능력약적식물，마우통과장소흡수적신전이도지상부분이괄응신오염토양배경．
Arsenic is distributed widely in the environment and has serious toxicity to the health of human being .A soil arsenic application pot experiment cultivated konjac was conducted in order to understand the relationship between soil arsenic pollution and arsenic content in plants .The results showed that arsenic content in konjac bulb and leaf ranged from 2 .12 to 14 .98 and from 1 .23 to 21 .23μg g-1 ,respectively ,which correlated linearly and significantly to soil arsenic applications in this experiment .The arsenic content in bulb was higher in control but lower in soil arsenic applications than that in leaf . The arsenic accumulation in konjac was significantly correlative to soil arsenic applications ,while the arsenic accumulation in bulb was higher under low soil arsenic applications and lower under high soil arsenic applications (>20 mg kg -1 ) than that of in leaf .With comparison to control ,soil arsenic applications decreased the percentage of the arsenic accumulation in bulb to the total arsenic accumulation ,but increased it in leaf to the total .The percentage of arsenic accumulation in bulb to total arsenic accumulation in konjac was higher under low soil arsenic applications and lower under high soil arsenic applications(>20 mg kg -1 ) than that of in leaf .The soil arsenic application utilized by konjac correlated significantly to soil arsenic applications ,but the utilization rate of it was only within 0 .25‰ -0 .84‰ . The konjac bulb and leaf accumulation factors were 0 .03-1 .3 and 0 .07-1 .3 ,respectively .Soil arsenic application decreased the bulb accumulation factors and increased the leaf accumulation factors compared to control .The bulb accumulation factor was higher than leaf in control but lower than leaf in soil arsenic applications .In summary ,soil arsenic applications not only increased the arsenic content in konjac , but also changed the arsenic distribution pattern in konjac .Konjac utilizes soil arsenic weakly and can transfer arsenic to aerial parts to adapt to the arsenic polluted soil environment .