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中国农学通报

中国农学通报 ›› 2020, Vol. 36 ›› Issue (28): 52-56.doi: 10.11924/j.issn.1000-6850.casb2020-0022

所属专题： 园艺

• 林学·园艺·园林 • 上一篇    下一篇

基施富硒肥对菜薹生长和营养元素的影响

郭巨先1,2(), 罗文龙1,2, 符梅1,2, 李桂花1,2()   

  1. 1广东省农业科学院蔬菜研究所,广州 510640
    2广东蔬菜新技术重点实验室,广州 510640
  • 收稿日期:2020-04-21 修回日期:2020-07-08 出版日期:2020-10-05 发布日期:2020-09-23
  • 通讯作者: 李桂花
  • 作者简介:郭巨先,女,1970年出生,湖南桃源人,研究员,硕士,研究方向：蔬菜作物资源与栽培。通信地址：510640 广东省天河区金颖路66号广东省农业科学院蔬菜研究所,Tel：020-38469427,E-mail：823522867@qq.com。
  • 基金资助:
    广东省现代农业产业技术体系创新团队建设项目“叶菜产业技术体系创新团队建设任务”(2019KJ122);广东省农业科学院省级农业科技特派员精准扶贫乡村产业振兴支撑项目“优良蔬菜新品种种植技术”(T2018013);广东省自然科学基金项目“菜薹薹色基因精细定位及候选基因分析”(2018A030313770)

Effects of Basal Application of Selenium-enriched Fertilizer on Growth and Nutrient Elements’ Content of Chinese Flowering Cabbage

Guo Juxian1,2(), Luo Wenlong1,2, Fu Mei1,2, Li Guihua1,2()   

  1. 1Vegetable Research Institute, Guangdong Academy of Agricultural Sciences, Guangzhou 510640
    2Guangdong Key Laboratory for New Technology Research of Vegetables, Guangzhou 510640
  • Received:2020-04-21 Revised:2020-07-08 Online:2020-10-05 Published:2020-09-23
  • Contact: Li Guihua

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摘要：

为研究在基肥中施用不同浓度的硒肥对菜薹生长的影响,筛选合适的施肥量,以“农科”富硒肥为材料,设置5个硒肥处理组（硒肥用量0(CK)、225.0、337.5、450.0、562.5 kg/hm2）,测定不同处理的菜薹相关的生理指标。结果显示,基肥中施用不同质量的硒肥,对菜薹的植株生长性状没有显著影响;超氧化物歧化酶(SOD)、过氧化物酶(POD)、过氧化氢酶(CAT)活性随着施肥量的增加呈显著上升趋势,丙二醛(MDA)含量随着施肥量的增加呈显著下降趋势;随着施肥量的增加,葡萄糖和蔗糖的含量降低,而果糖含量呈显著上升趋势;低浓度时硒促进了菜薹对氮、磷、钾吸收,高浓度时硒抑制了菜薹对氮、磷、钾的吸收;随着施肥量的增加菜薹硒的含量呈上升趋势,4个处理菜薹鲜样中硒含量分别达到0.059、0.096、0.107、0.133 mg/kg,是对照的19.66~44.33倍。研究结果可为指导大田生产富硒菜薹提供试验依据。

关键词: 菜薹, 富硒肥, 基肥, 酶活, 营养元素

Abstract:

The aim is to assess the effect of exogenous Se fertilizer on yield and nutritional status of Chinese flowering cabbage (Brassica campestris ssp. chinensis var. utilis). In this study, “Nongke” selenium enriched fertilizer was used as the material, and five different doses (0, 225.0, 337.5, 450.0, 562.5 kg/hm2) were supplied via basal fertilization. The results showed that the selenium enriched fertilizer addition did not markedly improve the plant growth parameters at all test concentrations. The activities of SOD, POD and CAT and the contents of fructose increased significantly in a dose dependent manner in “Nongke” treated plants compared to that of non-treated, however, the contents of MDA, glucose and sucrose showed a decreasing trend with the increase of fertilizer amount. The up-take of nitrogen, phosphorus and potassium by Chinese flowering cabbage plants were promoted by basal application of lower concentrations of selenium enriched fertilizer, but was inhibited by higher fertilizer amount. With the increase of the amount of selenium fertilizer, the selenium content increased significantly in the flower stalk of Chinese flowering cabbage, reaching 0.059, 0.096, 0.107, 0.133 mg/kg, respectively, 19.66-44.33 times of that of the control plant.

Key words: Chinese flowering cabbage, selenium enriched fertilizer, basal fertilizer, enzyme activity, nutrient element

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