CAJ | 학술논문

以松嫩平原苏打盐渍土为对象，研究了不同植被条件下松嫩平原苏打盐渍土土壤容重、入渗速率变化及它们之间的差异。结果表明，不同植被条件下土壤容重差异显著，在采样深度0～20 cm及20 cm～40 cm范围内，芦苇条件下苏打盐渍土土壤容重值最高，且随着采样深度增加而增加；羊草条件下苏打盐渍土土壤容重值最小，且随着采样深度增加而减小。植被覆盖可以增加苏打盐渍土土壤水分入渗速率。入渗速率拟合的方程与实测值在时间为110 min内时基本吻合。图1，表4，参32。
이송눈평원소타염지토위대상，연구료불동식피조건하송눈평원소타염지토토양용중、입삼속솔변화급타문지간적차이。결과표명，불동식피조건하토양용중차이현저，재채양심도0～20 cm급20 cm～40 cm범위내，호위조건하소타염지토토양용중치최고，차수착채양심도증가이증가；양초조건하소타염지토토양용중치최소，차수착채양심도증가이감소。식피복개가이증가소타염지토토양수분입삼속솔。입삼속솔의합적방정여실측치재시간위110 min내시기본문합。도1，표4，삼32。
Soil bulk density and water infiltration rate were determined under different plant communities in saline -sodic soils in the Songnen Plain.The bulk density measurements showed that there was a significant difference among different vegetation covers .The lar-gest soil bulk density was found under Phragmites australis( Cav.) Trin.ex Steud.and was increased with the increase of sampling depth in soil.On the contrast,the lowest soil bulk density was observed under Leymus chinensis,which was decreased with the increase of sam-pling depth in soil.The result of water infiltration rate indicated that vegetation covers could increase water infiltration rate .The esti-mates of water infiltration rate showed a consistent agreement with the actual measured values from 0 minute to 110 minutes.