Abstract：
In order to reduce the harmful effects of synthetic non-biodegradable hydrogel, biopolymers have attracted attention, particularly for use in slow-release fertilizers. The current attempt intends to develop a hydrogel from biopolymers for sustainable release of water and nutrients in soil. Here, guar gum is used as a polysaccharide, MMA as a monomer, KPS as an initiator, and Polylactic acid as a cross-linker. Further investigation is done to study synthesized hydrogel in the development of wheat crop. Biodegradation study shows that it\'s environmentally favorable and degradable, contributing nutrients to the soil as it decomposes. Fertilizer release studies in soil and water show that the timing of the nutrient release is delayed, improving soil water holding capacity and retention studies. The agronomic parameters show that fertilizers-loaded hydrogel has a positive effect on physiological, morphological characteristics like shoot length, root length, number of shoots and roots, shoot weight and root weight, chlorophyll content, and most notably, fruiting efficiency is enhanced as compared with commercially available hydrogel. ATR-FTIR, SEM-EDX, TGA-DTA, and XRD analysis used to confirm successful loading of fertilizers and biodegradation of hydrogel. The encouraging findings suggested that this hydrogel could be used as a multifunctional, fertilizers-loaded hydrogel in crop production.
摘要：
为了减少合成非生物降解水凝胶的有害影响，生物聚合物引起了人们的注意，特别是用于缓释肥料。当前的尝试旨在从生物聚合物开发一种水凝胶，用于在土壤中持续释放水和养分。这里,瓜尔胶用作多糖，MMA作为单体，KPS作为发起者，和聚乳酸作为交联剂。进一步研究了合成水凝胶在小麦作物发育中的作用。生物降解研究表明，它的环境良好，可降解，在土壤分解时为土壤提供营养。土壤和水中的肥料释放研究表明，养分释放的时间被延迟，提高土壤持水能力和保持力研究。农艺参数表明，加载肥料的水凝胶对生理，形态特征如芽长度，根长,芽和根的数量，芽的重量和根的重量，叶绿素含量，最值得注意的是,与市售的水凝胶相比,结果效率提高。ATR-FTIR,SEM-EDX,TGA-DTA,和XRD分析用于确认肥料的成功装载和水凝胶的生物降解。令人鼓舞的发现表明，这种水凝胶可以用作多功能，作物生产中的肥料负载水凝胶。
