Water and nutrients scarcity are the two major factors for yield reduction in many wheat-producing areas of the world. Drought stress also restricts micronutrient uptake and thus induces micronutrient deficiency. Zinc is the most important micronutrient for abiotic stress tolerance. A field trial was conducted from 2013 to 2015 to study the effect of foliar application of zinc under normal (100% field capacity) and water deficit (60% field capacity) conditions on quantitative and qualitative aspects of wheat (Triticum aestivum L. var. Faisalabad-08). Three Zn levels (0, 0.1%, and 0.2% by using ZnSO₄. 7H₂O) were foliar sprayed at the vegetative and reproductive stages of wheat. Obtained results revealed that the growth, yield traits, photosynthetic pigments, and WUE were negatively affected by lower water supply. Zinc foliar application did not affect yield under normal irrigation conditions, however, under water deficit foliar application of 0.2% Zn enhanced grain yield to 25–40%. Zinc foliar spray at both vegetative and reproductive stages increased the chlorophyll contents and WUE. Zinc contents of wheat grain were more when 0.1% Zn was sprayed at the reproductive stage or 0.2% Zn at the vegetative stage. Thus, the foliar application of Zn is a promising short-term approach to improve productivity and grain nutrient content in wheat under water deficit stress. Furthermore, the timing and rate of Zn application could be helpful for the efficient use of water for increasing grain yield.

缺水和缺乏养分是世界许多小麦产区减产的两个主要因素。干旱胁迫也限制了微量营养素的吸收，从而导致微量营养素缺乏。锌是非生物胁迫耐受性最重要的微量营养素。2013年至2015年进行了田间试验，研究了正常（100％田间持水量）和缺水（60％田间持水量）条件下叶面施锌对小麦（Triticum aestivum L. var。费萨拉巴德-08）。三个锌水平（0，0.1％，并且通过使用硫酸锌0.2％₄。7H ₂O）在小麦的营养和生殖阶段进行叶面喷施。获得的结果表明，生长，产量性状，光合色素和水分利用效率受到供水量降低的不利影响。在正常灌溉条件下，叶面喷施锌不会影响产量，但是，在水分亏缺的情况下，叶面喷施0.2％Zn可使谷物增产25％至40％。营养期和生殖期叶面喷锌均增加了叶绿素含量和WUE。生育期喷施0.1％Zn或营养期喷施0.2％Zn时，小麦籽粒中的锌含量更高。因此，在缺水胁迫下，叶面施用锌是提高小麦生产力和籽粒养分含量的有前途的短期方法。此外，