儋州水稻株型与产量及冠层光分布的关系研究

Research on rice plant type and yield to canopy light distribution relationship based on Danzhou area

在海南儋州地区水稻蜡熟期田间抽样调查的基础上,分析了水稻的株型与产量及群体冠层光照强度分布的相关关系。结果表明:每穗总粒数和结实率是影响水稻产量的主要因素,植株形态指标倒3叶、倒3节间、倒4节间、倒5节间长及株高与产量呈显著正相关;透射率与倒5节间长呈显著正相关,与倒1叶长呈显著负相关,与倒2叶、倒3叶、倒1节间、倒2节间、倒3节间、倒4节间长相关关系不显著;截光率与倒1叶长呈显著正相关,与倒3节间、倒4节间、倒5节间长呈显著负相关,与倒2叶、倒3叶、倒1节间、倒2节间长相关关系不显著;此外,株高与透射率呈显著正相关,与截光率呈显著负相关。

Base on survey the Danzhou areas Rice at wax- period ,we had analysised the relationship between the rice plant type and yield and canopy light intensity distribution. The results showed that the number of grains per panicle and seed setting rate are a main factors affect the yield, yield and 3th leaf, 3th steam,4th steam, 5th steam, plant height showed significant difference. Transmission rate and 5th steam showed a significant positive correlation and 1st leaf showed a significantly negative correlation, but 2ed leaf, 3th leaf, lth steam, 2ed steam, 3th steam, 4th steam showed no significant correlation ; cut-off rate and 3th steam, 4th steam, 5th steam showed a significantly negative correlation and 1st leaf show a significantly positive correlation, but 2ed leaf, 3th leaf, 1st steam, 2ed steam show a no significant correlation. Plant height and transmission rate showed significantly positively correlated ,but cut-off rate was significantly negative correlation.