不同浓度盐碱胁迫对水稻生长发育及产量的影响

Effect of Different Concentrations of Saline-Alkali Stress on Growth and Yield of Rice

以长白9号水稻为试验材料,采用盆栽法,研究不同浓度盐碱胁迫对水稻生长发育及产量的影响。结果表明,不同浓度盐碱胁迫下,水稻分蘖动态、叶面积、干物质积累量和产量均出现不同程度下降。当土壤含盐量为2.20‰时,处理A的分蘖数、叶面积、干物质积累和产量与CK差异均不显著,当土壤含盐量>2.20‰时,差异显著。说明当土壤含盐量为2.20‰,p H为7.92,电导率为200.13 us/cm时,可作为苏打盐碱地水稻种植及土壤改良与综合利用的重要参考指标。

Taking Changbai 9 as experiment material, effect of different concentrations of saline-alkali stress on growth and yield of rice was studied in the paper. The results showed that a decrease tendency with different degree in dynamics of rice tillering, leaf area, dry matter accumulation and yield of rice in different concentrations of saline-alkali stress. Compared with CK, there were no significant differences on tillering, leaf area, dry matter accumulation and yield when soil salt content was 2.20‰, but there were significant differences when soil salt content was more than 2.20‰. So that it can be used as an important reference index for rice planting of saline-alkali soil, soil improvement and comprehensive utilization when soil salt content was 2.20‰, pH was 7.92 and electrical conductivity was 200.13 us/cm.