水稻根系建成与产量及其构成关系的研究

Studies on Relationship Between the Character Parameters of Root and Yield Formation in Rice

以汕优 6 3和两优培特为材料 ,在大田条件下 ,研究了水稻不同生育期不同层次的根系参数与产量形成之间的关系 ,结果表明 ,齐穗期上位根的根干重密度、根长密度、根表面积密度和根活性表面积密度与每蔸有效穗数及籽粒产量之间呈显著正相关 ,根长密度、根干重密度与每蔸穗数也呈显著正相关 ,品种间趋势一致。通过分析建立了水稻根系参数与产量之间的定量回归模型。

The relationship between the character parameters of rice root at different layers at different growth stages and yield of rice varieties Shanyou63 and Liangyoupeite was studied in field conditions. The results showed that the dry weight, the length, the surface area and active surface area density of upper position root at heading stage had a significant positive correlation with effective panicle number per hill and yield. The dry weight and length density of root also had a significant positive correlation with panicle number per hill in different rice varieties. A quantitative regression model of relationship between the character parameters of roots and yield of rice was developed by data analysis.