摘要
以甘蓝型双低油菜品种宁杂1838为材料,通过在基质中拌入烯效唑,设置0、20、40、60和80μg/L共5个烯效唑浓度处理,测定毯状苗在不同时期的农艺性状、器官干重,研究了不同浓度烯效唑对油菜毯状苗的调控效应,以探索适合机械移栽的育苗基质及轻简优化培育方法。结果显示,基质中拌施烯效唑后,苗高明显降低,根颈长度变小,根颈增粗;根据回归方程推算,基质中拌入33.7μg/L烯效唑时明显抑制油菜毯状苗伸长,增加干物质积累量,对存苗数影响较小,与对照相比,显著增加出叶数,促进根颈粗壮,壮秧效果显著,最适合机械化移栽,因此认为此浓度最为适宜。
To obtain strong blanket seedling by optimal uniconazole treatment, double-low rapeseed(Brassica napus) cultivar Ningza 1838 was used to analyze the effect of different uniconazole by 0, 20, 40, 60 and 80 μg/L in substrate during growth process. The objective was to explore the best nursery substrate of blanket seedling suitable for mechanical transplantation and light-and-optimized cultivation. Results showed that after application of uniconazole in substrate, plant height decreased, root collar length shortened, and root collar became thicker. By regression equation, when mixed with 33.7 μg/L uniconazole in substrate, seedling elongation was inhibited, dry matter accumulation was increased. It had less effect on surviving seedling numbers. Compared with contrast, it significantly increased leaf numbers, promoted thick roots and necks, and led to strong seedlings, which was suitable for mechanized transplanting.
作者
刘雪慧
冯倩楠
冷锁虎
左青松
杨光
陆俊瑶
陆一帜
LIU Xue-hui;FENG Qian-nan;LENG Suo-hu;ZUO Qing-song;YANG Guang;LU Jun-yao;LU Yi-zhi(Key Laboratory of Crop Genetics and Physiology of Jiangsu Province/Ecology and Cultivation in Middle and Lower Reaches of Yangtse River of Ministry of Agriculture and Rural Affairs,Yangzhou University,Yangzhou 225009,China)
出处
《中国油料作物学报》
CAS
CSCD
北大核心
2020年第2期188-193,共6页
Chinese Journal of Oil Crop Sciences
基金
国家重点研发计划项目(2018YFD1000900)
国家重点研发计划项目(2017YFD0700804)。
关键词
甘蓝型油菜
油菜毯状苗
烯效唑
秧苗质量
Brassica napus L.
rapeseed blanket seedling
uniconazole
seedling quality
