摘要
针对无土栽培中使用的泥炭酸性较强,不适合绝大多数花卉生长这一特点,通过在泥炭中加入不同粒径的白云质石灰石,在25℃±3℃的恒温培养箱中进行培养,测定泥炭pH的变化,从而研究白云质石灰石对泥炭pH调节的效果及pH与石粉粒径的关系。结果表明,泥炭的pH变化主要发生在前5天,到15天后基本达到稳定状态。并且当石灰石粉的粒径为A:Φ<0.01mm时,泥炭的pHH2O为6.00,pHKCl为5.80,达到了比较适合花卉生长的范围。
In order to make good use of peat, which is very low in pH , an experiment was carried out to study effects of dolomitic lime on peat media. Peat was incubated at 25℃±3℃, and its pH was monitored for a few days. Changes in pH of the peat occurred mainly in the first 5 days, and became smaller and small till the 15th day when the pH was found stable. When the particle size of dolomitic lime was A: Φ<0.01mm, the peat’s pHH2O was 6.00, and pHKCl 5.80.
出处
《土壤》
CAS
CSCD
北大核心
2005年第2期210-213,共4页
Soils
