摘要
一年半的盆栽混土试验表明，种在受锰矿砂污染了的土壤中的菠萝，易吸收过量的锰，当菠萝叶中锰达５６８．８２ｍｇ／ｋｇ时，菠萝开始表现出锰毒害症状，叶绿素合成受阻，营养体发育不良，植株矮小，产量低。向受污染土中加入低锰客土，土壤锰含量降低，菠萝锰毒害随客土的加量增加而减轻，当土壤中代换锰为７２．９６ｍｇ／ｋｇ时，菠萝生长基本正常。
Abstract The results of the 1.5-year pot experiment showed that the pineapples planted in high manganese soil tended to absorb too much manganese.When the manganese concentration in pineapple leaf was more than 568.82 mg/kg,the chlorosis appeared.The chlorotic pineapple plants were much weaker and shorter than those of control.Generally,the serious chlorotic pineapple plants could not bear any fraits.It was also found that the high manganese soil mixed with low manganese one,the soil exchangeable manganese was lowered,the chlorosis was lightened.When the soil exchangeable manganese was less than 72.96mg/kg,the pineapple plants could grow normally.
出处
《农业环境保护》
CSCD
1996年第1期15-18,共4页
Agro-Environmental Protection
