草炭与风化炭改良盐碱土的生态效应

Ecological effect of peat and weathered coal on alkali-saline soil

采用草炭和风化炭进行改良盐碱土的盆栽试验。结果表明,施用草炭、风化炭使土壤盐分略有上升,主要使Ca^(2+)和Na^+增加;土壤有机质含量因草炭、风化炭的施用而增加,且与有机物料的用量呈正相关关系;土壤速效氮、速效磷、速效钾含量也均随有机物料的施用而增加。水稻株高、穗长和每穗粒数均有所增加,水稻籽实产量显著提高。

Pot experiment was conducted to study the effect of peat and weathered coal on soil al-kali-salinity and rice plant yield in Keerqin sandy area. Results showed that total salt in soil was increased when adding peat or weathered coal mainly because the increasing of soil soluble Ca and Na. Soil organic carbon,soil available N, P and K were positively correlated to the increasing of peat or weathered coal adding. Rice yield was significantly enhanced,the plant height, tiller length and grain number of per tiller were raised.