湖南农业科学Issue(6)：32-37,6.DOI:10.16498/j.cnki.hnnykx.2026.006.005
不同叶面调控处理对3个早熟油菜品种苗期生长的影响研究
Effects of Different Foliar Fertilizer Treatments on the Seedling Growth of Three Early-Maturing Varieties of Brassica napus
摘要
Abstract
This study aimed to explore the effects of different foliar fertilizer treatments on the seedling growth of three early-maturing varieties—'Huayouza 652','Huayouza 2031',and'Fengyou 112'—of Brassica napus.The experiment was conducted with five foliar fertilizer treatments:clear water(CK),24-brassinolide(T1),organic selenium(T2),Lili Bao foliar fertilizer once(T3),and Lili Bao foliar fertilizer twice(T4).The agronomic traits and physiological and biochemical indicators before winter were determined and the field frost damage was investigated.The results showed that different treatments promoted the growth or enhanced the stress tolerance of B.napus seedlings through differentiated physiological pathways.Among them,T2 demonstrated prominent performance in promoting biomass accumulation and significantly increased the chlorophyll content of the three varieties.Compared with CK,T2 significantly increased the aboveground fresh weight and the underground fresh weight of'Huayouza 652'by 133.5％and 382.4％,respectively,while significantly decreasing the malondialdehyde(MDA)content of'Huayouza 652'and'Huayouza 2031'.T4 performed well in activating the antioxidnat defense,synergistically increasing the activities of superoxide dismutase(SOD),peroxidase(POD),and catalase(CAT)and reducing the MDA content.Thus,T4 had the lowest frost damage index.T1 had a unique advantage in promoting photosynthetic growth,increasing the chlorophyll content of'Huayouza 652','Huayouza 2031',and'Fengyou 112'by 53.0％,55.4％,and 15.8％,respectively,compared with CK.Moreover,'Fengyou 112'achieved the highest aboveground fresh weight and underground fresh weight under T1.In conclusion,T2 was the optimal strategy to synergistically achieve rapid biomass accumulation and enhance the stress tolerance of B.napus before winter.T4 and T1 could be used as special management options to cope with low temperature stress and tap the potential of high yield,respectively.关键词
早熟油菜/叶面调控/芸苔素内酯/抗氧化酶/抗冻性Key words
early-maturing variety of Brassica napus/foliar fertilizer management/brassinolide/antioxidant enzyme/frost resistance分类
农业科技引用本文复制引用
谷松林,尹心科,谷源,蔡冬华,康慧媚,张维..不同叶面调控处理对3个早熟油菜品种苗期生长的影响研究[J].湖南农业科学,2026,(6):32-37,6.基金项目
2025年湖南早熟油菜优势特色产业集群试验示范基地项目(耒阳市) （耒阳市）
