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中国农学通报

中国农学通报 ›› 2015, Vol. 31 ›› Issue (4): 147-151.doi: 10.11924/j.issn.1000-6850.2014-2532

• 林学 园艺 园林 • 上一篇    下一篇

中微量元素叶面肥复配试验化学稳定性初探

周昌敏1,何兆桓1,霍志铭1,杨苞梅1,涂仕华2,李国良1   

  1. (1农业部南方植物营养与肥料重点实验室,广东省农业科学院农业资源与环境研究所,广东省养分循环利用与耕地保育重点实验室,广东广州 510640；2国际植物营养研究所成都办事处,四川成都 610066）
  • 收稿日期:2014-09-17 修回日期:2015-01-28 接受日期:2014-11-24 出版日期:2015-03-20 发布日期:2015-03-20
  • 通讯作者: 李国良
  • 基金资助:
    广东省科技计划项目(2012A020602021);广东省科技计划项目(2008A020100022)；广东省农用地测土配方施肥补贴项目“柑桔施肥指标体系建设”(粤财农[2012]407号)；国际植物营养研究所(IPNI)项目资助。

Preliminary Study on Chemical Stability of Leaf Compound Fertilizer of
Secondary and Micro Elements

Zhou Changmin1, He Zhaohuan1, Huo Zhiming1, Yang Baomei1, Tu Shihua2, Li Guoliang1   

  1. (1Key Laboratory of Plant Nutrition and Fertilizer in South Region , Ministry of Agriculture,Institute of Agricultural Resources and Environment, Guangdong Academy of Agricultural Sciences Guangdong Key Laboratory of Nutrient Cycling and Farmland Conservation, Guangzhou 510640; 2International Plant Nutrition Institute Chengdu Office, Chengdu 610066)
  • Received:2014-09-17 Revised:2015-01-28 Accepted:2014-11-24 Online:2015-03-20 Published:2015-03-20

摘要： 为了适应柑橘和荔枝对中微量元素的需求，以及充分利用并提高中微肥使用率、水资源及人力资源，本研究设计以喷施浓度调配4组复合叶面肥喷施液（包括四水八硼酸钠、钼酸铵、硫酸锌、硝酸钙）。考虑到中微肥混合及随后混合液储存的化学稳定性，因此设计在外界3种可能刺激（紫外、加热、日晒）；以及CK静置持续下，研究混合液最合适pH，并考察混合液中各组分的含量变化。结果表明：（1）四水八硼酸钠可与钼酸铵复混；如需加入镁、锰和锌元素则需要加入EDTA络合稳定化；（2）初始pH在6、7、8的混合液4种条件下7日反应后均往6.75靠拢；（3）本研究条件下，化学稳定性排序是B8O132->Mo2O72->Ca2+>Zn2+。该复混试验为荔枝叶面肥复混调配提供了化学理论基础。

关键词: 苦荞麦, 苦荞麦, 种植密度, 茎秆特征, 抗倒性

Abstract: In order to meet the basic need of secondary and micro elements in lichi and orange planting business, and to efficiently utilize the fertilizer, water and labor sources, 4 recipes featured mixed secondary and/or micro elements (including borax, ammonium molybdate, zinc sulfate and calcium nitrate) were compounded for lichi leaf fertilizers. Given the potential chemical disharmony of the compounded solvents, the author further studied chemical content stability and pH variation of the compounded fertilizers upon potential eternal stimuli including UV, heating and sunlight (and CK). The results showed that: (1) borax and ammonium molybdate share mutual stability in compounding, besides, EDTA could be employed as complex stabilizer as Mg2 , Mn2 and Zn2 ions were added in borax substrate; (2) upon different stimuli for 7 days, all samples with initial pH 6, pH 7 and pH 8 would end up with about pH 6.75; (3) under the set condition, stability trend was concluded as B8O132->Mo2O72->Ca2 >Zn2 . This study could provide theoretical chemical support for practical lichi leaf fertilizer compounding.