杂交水稻2025，Vol.40Issue(3)：64-71,8.DOI:10.16267/j.cnki.1005-3956.20240930.216
种子处理方式和每孔播种量对杂交籼稻钵盘育秧秧苗素质和用种成本的影响
Effects of Seed Treatment Methods and Seeding Rate per Hill on Seedling Quality and Seed Cost in Pot Tray Seedling Raising of Indica Hybrid Rice
摘要
Abstract
This study aims to investigate the effects of seed treatment methods and seeding rate per hill on seedling quality and seed cost in pot tray seedling raising of indica hybrid rice.The indica hybrid rice variety Taifengyou 79 was used as the experimental material.Two seed treatment methods(soaking seeds for 48 h and dry seeds)and five seeding rate treatments(1,2,3,4 and 5 seeds per hill)were set up to study the differences in seedling emergence,seedling quality and seed cost under different seed treatment methods and seeding rates per hill.The results showed that compared with the dry seed treatment,the seed soaking treatment increased the average number of seedlings per hill and seedling emergence rate by 20.56％and 19.98％,respectively.Increasing the seeding rate per hill enhanced the seedling emergence rate and the number of seedlings per hill,with dry seeds sown at 3～5 seeds per hill and soaked seeds sown at 2～5 seeds per hill achieving＞95％seedling emergence.However,seedling quality showed a gradual deterioration trend with the increase of seeding rate.Under the seed soaking treatment,compared with sowing three soaked seeds per hill,sowing five soaked seeds per hill decreased the number of tillers per plant,stem base width,dry shoot weight per 100 seedlings and strong seedling index by 100％,13.73％,29.41％and 40.90％,respectively,and decreased the total root length and the number of root tips by 33.72％and 34.92％,respectively,and the differences all reached a significant level.Compared with sowing five seeds per hill,sowing one seed per hill reduced the seed quantity and seed cost per hectare by 75.68％and 75.67％under the dry seed treatment and by 75.66％and 75.68％under the seed soaking treatment,respectively;sowing 2～3 seeds per hill decreased the seed quantity and seed cost by 39.14％～58.05％under the dry seed treatment and by 39.15％～58.07％under the seed soaking treatment,respectively.Considering the seedling emergence(＞95％),seedling quality and seed cost comprehensively,the optimal seeding rates were determined as three seeds per hill for dry seeds and two seeds per hill for soaked seeds,which can effectively improve seedling quality while minimizing seed costs in the pot tray seedling raising of indica hybrid rice.关键词
杂交籼稻/钵盘育秧/种子处理方式/每孔播种量/秧苗素质Key words
indica hybrid rice/pot tray seedling raising/seed treatment method/seeding rate per hill/seedling quality分类
农业科技引用本文复制引用
张芳,蒋明金,姬广梅,张佳凤,李立江,罗丹秋,罗锡坤,田晋钰,李敏..种子处理方式和每孔播种量对杂交籼稻钵盘育秧秧苗素质和用种成本的影响[J].杂交水稻,2025,40(3):64-71,8.基金项目
贵州省高层次创新型人才项目(黔科合平台人才-GCC[2023]065) （黔科合平台人才-GCC[2023]065）
贵州省水稻产业技术体系(GZSDCYJSTX2024-03) （GZSDCYJSTX2024-03）
贵州省山地农业关键核心技术攻关项目(GZNYGJHX-2023005) （GZNYGJHX-2023005）
贵州省农业科学院自主创新专项(黔农科引导2023-01) （黔农科引导2023-01）
国家现代农业产业技术体系(CARS-01-25) （CARS-01-25）
贵州省科技计划项目(黔科合基础-[2024]青年075) （黔科合基础-[2024]青年075）
