水稻穗颈节伤流势与源库质量的关系研究

The bleeding intensity and other physiological quality index were measured with a hybrid Shanyou 63 in 1997.It indicated that the bleeding intensity in neck of spike was different from that of basal internode, the bleeding potential (integral of bleeding intensity and its duration) in neck of spike was correlated positively with canopy apparent photosynthesis, single stem sheath weight, transportation percentage of matter stored in stem and sheath, basal internode bleeding potential, and ATPase of grain sink. The bleeding potential in neck of spike could be used as a synthetical quality index for three source and sink.