Increasing the saffron quantity and quality is essential and should be considered to achieve the desired performance. In this regard, to study the effect of nutrient and irrigation management on the quality and yield of saffron, an experiment was carried out at the research station, the Ferdowsi University of Mashhad, Iran, in 2013–2015. The study was performed as a split-split plot based on a Randomized Complete Block Design with 18 treatments. Experimental factors were: 1- superabsorbent (S.A.) [application and non-application (non-S.A.)], 2- irrigation intervals [every two, three, and four weeks], and 3- nutrient management [humic acid, mycorrhiza (Glomus intraradices) and control]. Among all treatments, the application of S.A. increased on average 61% fresh saffron flower and dry stigma yields in both growing seasons. S.A. + four weeks irrigation intervals + humic acid were increased number of flower, dry stigma yields (175.33 per m² and 7.472 kg.ha^-1, respectively), and water productivity of irrigation of saffron stigma (2.138 g.ha^-1) in 2015. The use of S.A. and humic acid compensated for water shortage and increased stigmas' yield. Furthermore, the maximum L observed in S.A. + three weeks irrigation intervals + humic acid (32.44). Among all treatments, the lowest amount of b value and Hue was observed in shorter irrigation intervals; so, application of S.A. + two weeks irrigation intervals + humic acid resulted in the minimum amount of Hue (−0.1783) that was a desirable trait. The maximum crocin and picrocrocin obtained in S.A. + three weeks irrigation intervals + mycorrhiza (225.9 ${\mathrm{A}}_{440}^{1\%}$ and 86.58 ${\mathrm{A}}_{254}^{1\%}$, respectively) and the highest safranal content observed in S.A. + four weeks irrigation intervals + humic acid (47.03 ${\mathrm{A}}_{330}^{1\%}$). In general, it seems that the application of humic acid, mycorrhiza, S.A., and longer irrigation intervals can significantly increase the quality and yield of saffron.

增加藏红花的数量和质量至关重要，应考虑达到预期的性能。对此，为了研究养分和灌溉管理对藏红花品质和产量的影响，2013-2015 年在伊朗马什哈德费尔多西大学研究站进行了一项实验。该研究基于具有 18 个处理的随机完整区组设计作为裂裂图进行。实验因素为：1- 超强吸收剂 (SA) [施用和不施用 (non-SA)]，2-灌溉间隔 [每两周、三和四周]，以及 3- 养分管理 [腐植酸、菌根 ( Glomus根内) 和控制]。在所有处理中，SA 的应用在两个生长季节平均增加了 61% 的鲜藏红花和干柱头产量。SA + 4 周灌溉间隔 + 腐殖酸增加了花数、柱头干产量（分别为 175.33 每 m ²和 7.472 kg.ha ^-1）和藏红花柱头灌溉的水分生产力（2.138 g.ha ^-1 ） 2015 年，SA 和腐植酸的使用弥补了水资源短缺，增加了柱头的产量。此外，在 SA + 三周灌溉间隔 + 腐植酸 (32.44) 中观察到的最大L。在所有处理中， b的量最低在较短的灌溉间隔内观察到值和色调；因此，SA + 两周灌溉间隔 + 腐殖酸的应用产生了最小量的色调 (-0.1783)，这是一个理想的特性。SA 中获得的最大藏红花素和藏红花素 + 三周灌溉间隔 + 菌根 (225.9${\mathrm{一种}}_{440}^{1\%}$和 86.58${\mathrm{一种}}_{254}^{1\%}$，分别）和在 SA + 4 周灌溉间隔 + 腐植酸（47.03${\mathrm{一种}}_{330}^{1\%}$）。总的来说，似乎施用腐植酸、菌根、SA和更长的灌溉间隔可以显着提高藏红花的品质和产量。