The stability of soil aggregates as affected by organic materials, microbial activity and physical disruption
The stability of soil aggregates as affected by organic materials, microbial activity and physical disruption
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DOI：
10.1071/sr9780009
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发表时间：
1978
期刊：
影响因子：
1.6
通讯作者：
J. Tisdall;B. Cockroft;N. Uren
中科院分区：
文献类型：
--
作者：
J. Tisdall;B. Cockroft;N. Uren
在潮湿的孵化相当于50吨公顷-1或更多的地面，容易分解的有机物质大大增加了比例的Shepparton细桑迪壤土的稳定聚集体1-4周内，聚集体保持稳定长达32周，如果不受干扰。严重限制微生物活性的Shepparton细桑迪壤土通过灭菌或干燥的聚集体增加了与间歇润湿和干燥，和模拟培养的物理破坏的效果。结果表明，微生物在非无菌潮湿的土壤中可以产生键合物质，部分补偿这些键的物理破坏。
On moist incubation the equivalent of 50 t ha-1 or more of ground, readily decomposable organic materials greatly increased the proportion of stable aggregates of Shepparton fine sandy loam within 1-4 weeks; the aggregates remained stable for up to 32 weeks if left undisturbed. Severe restriction of microbial activity in aggregates of Shepparton fine sandy loam by sterilization or dryness increased the effect of physical disruption associated with intermittent wetting and drying, and simulated cultivation. The results suggest that microorganisms in non-sterile moist soil can produce bonding substances which compensate partially for those bonds broken physically.