
播种量和秧龄对钵苗机插杂交籼稻秧苗素质的影响
网络出版日期: 2019-05-20
基金资助
公益性行业(农业)科研专项经费项目子项(201503118-03);国家自然科学基金(31360311;31160263);贵州省农业科技攻关项目(黔科合支撑[2019]2303号;黔科合支撑[2016]2563号;黔科合NY[2013]3005号;黔科合NY[2011]3085号);贵州省生物学一流学科建设项目(GNYL[2017]009);贵州省特色粮油作物栽培与生理生态研究科技创新人才团队(黔科合平台人才[2019]5613号);贵州省高层次创新型人才项目(黔科合平台人才[2018]5632)
Effects of Sowing Rate and Seedling Ages on the Quality of Seedling with Bowl Mechanical-transplanting Method
欧达1,冯跃华1,2*,许桂玲1,管正策1,苏卫1,张佳凤1,王玲莉1,陈梅1 . 播种量和秧龄对钵苗机插杂交籼稻秧苗素质的影响[J]. 中国稻米, 2019 , 25(3) : 65 -69 . DOI: 10.3969/j.issn.1006-8082.2019.03.014
The effects of sowing rate and seedling age on the quality of seedling were studied by using indica hybrid rice C Liangyouhuazhan as experimental material. The results showed that with the decrease of seedling age, seedling height, leaf height and root-shoot ratio decrease, leaf age, stem base width, total root length, root surface area, root branch number and root tip number decrease first and then increase. The leaf area and root mean diameter increased first and then decreased, while the weight-to-height ratio showed an upward trend. With the increase of sowing rate, the seedling height, leaf age and leaf height decreased first and then increased, the stem width, dry weight and weight-to-height ratio, total root length, root surface area, root mean diameter and root branch decreased. While the root-shoot ratio increased first and then decreased. According to the results of subordinate function value analysis, the comprehensive quality of the seedlings of 55 d and the seeding rate 2/hole was the best treatment.
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