Yatim Norazlina Mohamad, Shaaban Azizah, Dimin Mohd Fairuz, Yusof Faridah, Razak Jeefferie Abd
Faculty of Manufacturing Engineering, Universiti Teknikal Malaysia Melaka, Hang Tuah Jaya, 76100 Durian Tunggal, Melaka, Malaysia.
Department of Biotechnology Engineering, Kulliyah of Engineering, International Islamic University Malaysia, P.O. Box 10, 50728 Kuala Lumpur, Malaysia.
Trop Life Sci Res. 2018 Mar;29(1):17-35. doi: 10.21315/tlsr2018.29.1.2. Epub 2018 Mar 2.
The roles of multi-walled carbon nanotubes (MWNTs) and functionalised multiwalled carbon nanotubes (fMWNTs) in enhancing the efficacy of urea fertilizer (UF) as plant nutrition for local MR219 paddy variety was investigated. The MWNTs and fMWNTs were grafted onto UF to produce UF-MWNTs fertilizer with three different conditions, coded as FMU1 (0.6 wt. % fMWNTs), FMU2 (0.1 wt. % fMWNTs) and MU (0.6 wt. % MWNTs. The batches of MR219 paddy were systematically grown in accordance to the general practice performed by the Malaysian Agricultural Research and Development Institute (MARDI). The procedure was conducted using a pot under exposure to natural light at three different fertilization times; after a certain number of days of sowing (DAS) at 14, 35 and 55 days. Interestingly, it was found that the crop growth of plants treated with FMU1 and FMU2 significantly increased by 22.6% and 38.5% compared to plants with MU addition. Also, paddy treated with FMU1 produced 21.4% higher number of panicles and 35% more grain yield than MU while paddy treated with FMU2 gave 28.6% more number of panicles and 36% higher grain yield than MU, which implies the advantage of fMWNTs over MWNTs to be combined with UF as plant nutrition. The chemical composition and morphology of UF-MWNTs fertilizers which is further characterised by FTiR and FESEM confirmed the successful and homogeneous grafting of UF onto the fMWNTs.
研究了多壁碳纳米管（MWNTs）和功能化多壁碳纳米管（fMWNTs）在提高尿素肥料（UF）作为本地MR219水稻品种植物营养剂功效方面的作用。将MWNTs和fMWNTs嫁接到UF上，在三种不同条件下制备出UF-MWNTs肥料，分别编码为FMU1（0.6重量% fMWNTs）、FMU2（0.1重量% fMWNTs）和MU（0.6重量% MWNTs）。按照马来西亚农业研究与发展研究所（MARDI）的常规做法，对MR219水稻批次进行系统种植。该过程在花盆中进行，在三个不同施肥时间暴露于自然光下；在播种后的特定天数（DAS），即14天、35天和55天。有趣的是，发现与添加MU的植株相比，用FMU1和FMU2处理的植株作物生长显著增加了22.6%和38.5%。此外，用FMU1处理的水稻产生的穗数比MU多21.4%，产量比MU高35%，而用FMU2处理的水稻穗数比MU多28.6%，产量比MU高36%，这意味着fMWNTs与MWNTs相比，在与UF结合作为植物营养剂方面具有优势。通过傅里叶变换红外光谱（FTiR）和场发射扫描电子显微镜（FESEM）进一步表征的UF-MWNTs肥料的化学成分和形态证实了UF成功且均匀地嫁接到fMWNTs上。
