Microbial biomass sufur (MB-S) and other sulfur components in soils around rhizosphere and the adjacent area of soybean,corn,rapeseed and rice seedlings were investigated using nylon-bag method after crop harvest. Rhi.

• 采用根际袋培养技术研究了大豆、玉米、油菜和水稻幼苗（60d）根际MB－S（MicrobialBiomass－Sulfur）的根际效应及硫肥对根际MB－S的影响。