中微量元素叶面肥复配试验化学稳定性初探  

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

作　　者：周昌敏[1] 何兆桓[1] 霍志铭[1] 杨苞梅[1] 涂仕华 李国良[1] 

机构地区：[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,广州510640 [2]国际植物营养研究所成都办事处,成都610066

出　　处：《中国农学通报》2015年第4期147-151,共5页Chinese Agricultural Science Bulletin

基　　金：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

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p H,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p H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。In order to meet the basic need of secondary and micro elements in lichi and orange plantingbusiness, and to efficiently utilize the fertilizer, water and labor sources, 4 recipes featured mixed secondaryand/or micro elements（including borax, ammonium molybdate, zinc sulfate and calcium nitrate） werecompounded for lichi leaf fertilizers. Given the potential chemical disharmony of the compounded solvents, theauthor further studied chemical content stability and p H variation of the compounded fertilizers upon potentialeternal stimuli including UV, heating and sunlight（and CK）. The results showed that：（1） borax and ammoniummolybdate share mutual stability in compounding, besides, EDTA could be employed as complex stabilizer asMg2＋, Mn2＋and Zn2＋ions were added in borax substrate;（2） upon different stimuli for 7 days, all samples withinitial p H 6, p H 7 and p H 8 would end up with about p H 6.75;（3） under the set condition, stability trend wasconcluded as B8O13^2-〉Mo2O7^2-〉Ca^2 ＋〉Zn^2 ＋. This study could provide theoretical chemical support for practicallichi leaf fertilizer compounding.

关 键 词：中微量元素肥料 紫外 日晒 P H变化 化学稳定 

分 类 号：S14-33[农业科学—肥料学]