Azab Ehab, Soror Abdel-Fatah Salah
Biotechnology Department, Faculty of Science, Taif University, P. O. Box 888, Taif, 21974 Taif, Saudi Arabia.
Botany and Microbiology Department, Faculty of Science, Zagazig University, Zagazig, 44519 Sharkia, Egypt.
Plants (Basel). 2020 Jul 21;9(7):924. doi: 10.3390/plants9070924.
The present investigation aims to evaluate the impacts of organic and inorganic fertilizers on the water parameters and physiological behaviors of an aquatic plant (.). The experiment used three groups: treatment with organic or inorganic fertilizer and a group with no fertilization as a control. . were grown in cement ponds that received different treatments. For water analysis, the obtained results clarified that fertilization resulted in no variation in the temperature or total hardness among different treatments. Organic fertilizer increased the dissolved phosphorus content, total hardness, and bicarbonate alkalinity, as well as the total phosphorus content, whereas inorganic treatment increased the pH, total ammonia content, and total nitrogen content. Regarding the biochemical composition of ., the chlorophyll content showed no variation among different treatment groups, while organic matter showed high variation among different treatment groups. The highest values for ash and fat content were recorded in control ponds. The highest protein content was found in organic treatment ponds. The addition of fertilizers led to an increase in the tissue contents of N and P compared to the control. This increase was highest when . was fertilized with organic fertilizer. The atomic N:P ratio was low in tissues subjected to either treatment compared with the control. The doubling time of . was decreased by fertilization. It is concluded that different fertilizer systems have significant effect on physico-chemical and biological parameters of water. Fertilization positively affects . growth. Organic fertilizer was more efficient for the growth of ., so it can be considered as a source of biofertilizer and green manure in areas where it spreads.
本研究旨在评估有机肥料和无机肥料对一种水生植物（.）的水质参数和生理行为的影响。实验设置了三组：分别用有机肥料或无机肥料处理，以及一组不施肥作为对照。.在接受不同处理的水泥池中生长。对于水质分析，所得结果表明，施肥并未导致不同处理之间的温度或总硬度出现变化。有机肥料增加了溶解磷含量、总硬度、碳酸氢盐碱度以及总磷含量，而无机肥料处理则提高了pH值、总氨含量和总氮含量。关于.的生化组成，叶绿素含量在不同处理组之间没有变化，而有机质在不同处理组之间变化很大。对照池中记录到的灰分和脂肪含量最高。有机肥料处理池中蛋白质含量最高。与对照相比，施肥导致N和P的组织含量增加。当.用有机肥料施肥时，这种增加最为显著。与对照相比，两种处理下组织中的原子N:P比均较低。施肥使.的倍增时间缩短。研究得出结论，不同的肥料体系对水体的理化和生物学参数有显著影响。施肥对.的生长有积极影响。有机肥料对.的生长更有效，因此在其分布地区可被视为生物肥料和绿肥的来源。
