摘要
通过土壤铝释放试验、马尾松幼苗铝处理试验和马尾松林地土壤抗铝处理试验,以及对南山土壤活性铝含量的测定,从正反两方面剖析了南山马尾松衰亡与铝中毒的关系。试验结果表明:南山土壤中活性铝的含量很高,大量的活性铝是在土壤酸化条件下矿物铝活化造成的,铝(特别是Al^(3+))对马尾松有较强的毒害作用,铝中毒是南山马尾松衰亡的主要原因。在此基础上,选用石灰、有机肥和磷酸盐等处理南山土壤,抗铝效果显著。
The relation between aluminum poisoning and decline of masson pine forest in Nanshan Mountain was studied in both positive and negative aspects by means of the analyses of active aluminum in the forest soil, the soil aluminum releasing test, the aluminum treatment test of the pine (Pinus Massniana Lamb) seedlings and the aluminum soil improvement in the forest land. The results show that there is a great amount of active aluminum in the soil and the active aluminum mainly comes from the activation of mineral aluminum under the acidic condition (pH<4.5). Aluminum, especially Al^(3+), is poisonous to the growth of the pine. The main reason led to decline of the pine forest was aluminum poisoning. The improvement effects of lime, organic fertilizer and phosphate to the rich-a-luminum soil were obvious.
出处
《环境科学研究》
EI
CAS
CSCD
1996年第6期21-25,共5页
Research of Environmental Sciences
关键词
马尾松
衰亡
酸雨
土壤酸化
铝中毒
重庆南山
Aluminum
Activation
Pinus Massniana Lamb
Improvement of rich-aluminum soil
