水稻伤流强度与根系形态和生理指标的关系研究

Study on the relationship between bleeding intensity and root morphology,root activity in rice

为研究水稻伤流强度与根系形态、根系活力等指标的相关关系,采用土壤盆栽试验,对4个供试水稻品种不同生育时期的根体积、根长、根条数、根系活力、单株伤流强度和根系活力的变化趋势进行了研究。结果表明,水稻基部节间伤流强度、根长、根体积、根条数均随生育进程呈先增加后减少的变化趋势,且水稻基部节间伤流强度与根粗、根长、根条数和根系活力呈显著或极显著正相关关系。

To study the relationship between bleeding intensity and root morphology, root activity, dy- namic changes of root volume, root length, root width, root number, root activity, and bleeding inten- sity of 4 rice varieties at different growth stages were studied by using the pot experiment. The results showed that the change trends of bleeding intensity, root length, root volume, and root number per plant first increased then decreased at top tillering stage or flowering stage in the developmental process, and significant or very significant relation between bleeding intensity and root width, root length, root activity was observed in the correlation analyses.