A.10m B.15m C.18m D.22m
A.3天 B.5天 C.1周 D.10天
A.大于7cm時,宜分兩層施噴;噴后應養(yǎng)護5~7d B.大于10cm時,宜分兩層施噴;噴后應養(yǎng)護5~7d C.大于7cm時,宜分兩層施噴,噴后應養(yǎng)護8~10d D.大于10cm時,宜分兩層施噴;噴后應養(yǎng)護8~10d