• ISSN 1008-505X
  • CN 11-3996/S
沈欣, 李燕婷, 袁亮, 赵秉强, 林治安, 杨相东, 李娟. 氨基酸与锌配合喷施提高小白菜生物量、品质及锌利用效率[J]. 植物营养与肥料学报, 2017, 23(1): 181-188. DOI: 10.11674/zwyf.16090
引用本文: 沈欣, 李燕婷, 袁亮, 赵秉强, 林治安, 杨相东, 李娟. 氨基酸与锌配合喷施提高小白菜生物量、品质及锌利用效率[J]. 植物营养与肥料学报, 2017, 23(1): 181-188. DOI: 10.11674/zwyf.16090
SHEN Xin, LI Yan-ting, YUAN Liang, ZHAO Bing-qiang, LIN Zhi-an, YANG Xiang-dong, LI Juan. Effects of combined foliar application of amino acids with Zn increase the biomass, quality and zinc use efficiency of Chinese cabbage[J]. Journal of Plant Nutrition and Fertilizers, 2017, 23(1): 181-188. DOI: 10.11674/zwyf.16090
Citation: SHEN Xin, LI Yan-ting, YUAN Liang, ZHAO Bing-qiang, LIN Zhi-an, YANG Xiang-dong, LI Juan. Effects of combined foliar application of amino acids with Zn increase the biomass, quality and zinc use efficiency of Chinese cabbage[J]. Journal of Plant Nutrition and Fertilizers, 2017, 23(1): 181-188. DOI: 10.11674/zwyf.16090

氨基酸与锌配合喷施提高小白菜生物量、品质及锌利用效率

Effects of combined foliar application of amino acids with Zn increase the biomass, quality and zinc use efficiency of Chinese cabbage

  • 摘要:
    目的 作物可以直接吸收小分子有机氮,探究不同氨基酸对作物产量、品质及养分吸收的影响,及其与锌肥配合的效果可深化对有机营养的认识,为叶面施肥提供理论依据。
    方法 以小白菜为供试作物进行盆栽试验,以喷施清水为对照,设甘氨酸、谷氨酸、苏氨酸、七水合硫酸锌分别单独喷施和甘氨酸、谷氨酸、苏氨酸分别与七水合硫酸锌混合喷施处理,三种氨基酸浓度梯度均为100、250、400 mg/L,七水合硫酸锌施用浓度为0.1%,共20个处理;每个处理5次重复,随机区组排列;收获后测定植株生物量和硝酸盐、可溶性糖及维生素C含量,分析植株吸收锌量。
    结果 1)施用三种氨基酸均能明显促进小白菜生长、改善品质,并能显著促进小白菜对锌的吸收。与对照相比,喷施三种氨基酸小白菜生物量分别提高了32.0%、19.8%和16.6%,硝酸盐含量分别降低了53.9%、60.9%和65.6%,可溶性糖含量分别提高了66.2%、145.1%和207.6%,Vc含量分别提高了20.8%、38.8%和61.6%。喷施100 mg/L的甘氨酸小白菜锌吸收量提高了12.0%,而喷施三种浓度的谷氨酸与苏氨酸均可提高小白菜的锌吸收量,分别平均提高了38.7%、12.0%;2)甘氨酸、谷氨酸、苏氨酸与硫酸锌混合喷施可明显提高锌的应用效果,与硫酸锌单施相比,混合喷施可分别使小白菜生物量提高25.6%、25.4%和24.5%,硝酸盐含量降低19.0%、26.3%和25.2%,可溶性糖含量提高33.2%、72.7%和27.1%,Vc含量提高67.1%、22.6%和25.2%,锌吸收量提高26.7%、50.0%和67.8%,锌利用率分别提高了14.3%、10.2%和19.2%,差异显著。
    结论 甘氨酸、谷氨酸、苏氨酸单独施用或与硫酸锌混合施用均能明显促进小白菜的生长发育及对锌的吸收利用,并能显著改善其品质。甘氨酸、谷氨酸、苏氨酸单独施用或与硫酸锌混合喷施其最适浓度范围均分别为250~400 mg/L、250~400 mg/L、100~250 mg/L。苏氨酸与硫酸锌混合喷施应用效果较甘氨酸和谷氨酸更佳,在氨基酸螯合锌肥中可优先选用。

     

    Abstract:
    Objectives Small molecular weight amino acids can be used directly by crops, fewer research have been done on their effect in growth and quality of crops. The study on their effect and the combined use with zinc will provide support for foliar application
    Methods A pot experiment was conducted using Chinese cabbage as material. Three kinds of amino acids, glycine, glutamic and threonine were chosen and foliar sprayed in three concentrations:100 mg/L, 250 mg/L, 400 mg/L. The amino acids weresprayed individually in the three concentrations or combined with 0.1% ZnSO4·7H2O, twenty treatments in total, including water sprayed as control, were arranged with five replicates. We measured the biomass, the contents of nitrate, soluble sugar and vitamin C of Chinese cabbage after the harvest, and analyzed accumulation of zinc in plants.
    Results 1) The foliar application of the three kinds of amino acids significantly increased the growth and zinc uptake, and improved quality of Chinese cabbage. Compared with spraying water (CK), the spraying of the amino acids increased the biomass by 32.0%, 19.8% and 16.6% in average, respectively, the contents of nitrate were decreased by 53.9%, 60.9% and 65.6%, respectively, the contents of soluble sugar were increased by 66.2%, 145.1% and 207.6%, and the contents of vitamin C were increased by 20.8%, 38.8% and 61.6%. The spraying of 100 mg/L glycine increased the zinc absorption by 12.0%, while all the treatments of spraying glutamic and threonine increased the zinc contents by 38.7% and 12.0%, respectively. 2) The combined spraying of amino acids with zinc effectively promoted the effectiveness of zinc. Compared with spraying ZnSO4, the combined spray of amino acids with zinc increased the biomass of Chinese cabbage by 25.6%, 25.4% and 24.5% in average, decreased nitrate contents by 19.0%, 26.3% and 25.2%, enhanced the contents of vitamin C by 67.1%, 22.6% and 25.2%, enhanced the soluble sugar contents by 33.2%, 72.7% and 27.1%, and increased the accumulation amounts of total zinc by 26.7%, 50.0% and 67.8%, and the zinc use efficiency were increased by 14.3%, 10.2% and 19.2% which were under the statistically significant level.
    Conclusions The combined use of glycine, glutamic and threonine with 0.1% ZnSO4can effectively increase the biomass, quality and zinc absorption of Chinese cabbage. The optimal spraying concentrations of glycine, glutamic and threonine were 250-400 mg/L, 250-400 mg/L and 100-250 mg/L, respectively. The best effect is found in threonine with ZnSO4, hinting a prospective combination for practical use.

     

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