【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。更多还原

【Abstract】 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 B8O132->Mo2O72->Ca2 +>Zn2 +. This study could provide theoretical chemical support for practicallichi leaf fertilizer compounding.更多还原