Soil fungi can both fix and mineralize soil nutrients and also play an active part in soil aggregateformation, which should be very important in paddy soil system.
真菌能够固结、矿化土壤养分,促进土壤团聚体的形成,它在水稻土中有很重要的作用。
2
Firstly, the wall effect of the aggregate distribution density of concrete and the formation mechanism of boundary layers were investigated by applying a simple simulation algorithm.
首先,应用一种简单的模拟算法,分析了混凝土骨料分布密度的边界效应和边界层形成机理。
3
Mixing, spreading, compacting of RCC, formation of structural joints, treatment of construction joints, prevention of aggregate segregation and its handling are given.