不同育秧基质与优化播量对滨海盐碱地水稻秧苗素质的影响

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关键词：水稻；播种量；育秧基质；秧苗素质；滨海盐碱地

中图分类号： 文献标志码：A 文章编号：2096-9902（2025）24-0044-05

Abstract：Cultivatingrobustseedlingsisoneofthekeys toachievinghighyieldandeficiencyinmachine-transplantedrice. Factorssuchasseedlingsubstrate，seedingrate，chemicalcontrol，andwaterandfertlizermanagementdirectlyinfluencethe qualityofseedlings.UsingShengxiangnuo1asthematerial，thisstudysetuptreatmentswitharddiskutrientsoilsoftdisk nutrient soil，hard disk substrate coton，and hard disk straw substrate blocksat a seeding rate of 90kg⋅ha-1 ，with the commonly used soft disk nutrient soil treatment at 120kg∙ha-1 asa control. The quality of the seedlings was analyzed.The results indicated that reducing the seeding rate increased the seedling emergence rate by up to 7.31% ，with significant improvements in plant height，stembasewidth，andotherindicatorsAmongdiferentsedlingsubstrates，thericeseedlingsexhibitedatrendof increasingandthendecreasingplantheight，leafarea，stembasewidth，andbiomassacumulationOverall，sedingscultivated with soft disk nutrient soil and hard disk substrate cotton at a seeding rate of 90kg∙ha-1 showed significant superiority over other seedling substrates.

Keywords： rice; sowing amount; seedling substrate; seedling quality； coastal saline-alkali soil

水稻作为全球最重要的粮食作物之一，在中国农业生产体系中占据核心地位，其2023年产量占全国粮食总产量的 29.7% ，对保障国家粮食安全具有重要意义[1-3]。（剩余5120字）