农业科学研究2024，Vol.45Issue(4)：78-84,7.
不同耐盐碱水稻根系生长特征对土壤盐渍化的响应
Response of Different Salt-tolerant Rice Varieties'Root Growth Characteristics to Soil Salinization
摘要
Abstract
In response to the water shortage issues faced by"rice planting in alkali soils"in the Ningxia Plain,an experiment was conducted on water-saving,salt-tolerant and high-yielding rice varieties in the moderate saline-alkali soils of Zhoucheng Village,Pingluo County.In 2023,the study was conducted on five salt-tolerant rice varieties(lines)selected from a previous study on the vertical migration of soil salinity,using a one-factor random block design in the moderate saline-alkali soils of Zhoucheng Village,Pingluo,Ningxia.The results show that:① During the entire rice growing season,the trend of soil moisture in different layers showed three upward moments followed by downturns,while the soil conductivity generally exhibited a pattern of three successive drops then rises before a gradual fall.② The root length,root surface area,root volume,and root vitality of each tested rice variety showed the most significant changes from the seedling to tillering stage,with the average increases of 2 626.46 mm,9 840.79 mm²,10 750.9 mm³,and 4.87 μg/(g·h),respectively.③ Correlation analysis shows that soil conductivity significantly negatively correlated with total root length,total surface area,and root absorption area.Among the five tested rice varieties,21HJW14,Ningjing48,and SD-22 exhibited better performance on saline-alkali land in the Yinbei District,Ningxia.关键词
河套平原/耐盐碱水稻/土壤水盐垂直运移/根系生长特征Key words
the Hetao Plain/salt-tolerant rice/vertical migration of soil water and salt/root growth characteristics分类
农业科技引用本文复制引用
杨正虎,张涛,张智,唐玙璠,张邦彦,白小龙,刘云鹏,武晋民,王彬..不同耐盐碱水稻根系生长特征对土壤盐渍化的响应[J].农业科学研究,2024,45(4):78-84,7.基金项目
黄河上游河套平原作物根区水盐响应机理及品种筛选与节水抑盐调控技术项目(2021YFD1900603) （2021YFD1900603）
河套灌区盐碱地改良利用重大战略咨询研究项目(2023NXZD6) （2023NXZD6）
2024年度大学生创新创业大赛区级项目(S202410749091) （S202410749091）
