ABSTRACT

The aim of this research was to assess the effect of different fertilization on barley and millet resistance to drought stress under current and warmed climates. Barley grown with organic fertilizers showed 3.8% and 5.6% lower losses of photosynthetic rate than plants grown with mineral fertilizers, at current and warmed climates, respectively. Enrichment with organic fertilizers also resulted in lower and insignificant trapped energy flux losses of barley due to drought in warmed climate compared to losses in fertilization with mineral when the negative drought effect was significant. Production of enzymatic antioxidants in barley, in warmed climate and drought conditions, increased by 44% more due to organic fertilization than due to mineral fertilization. Aforementioned changes in indicators resulted in different drought resistance under different fertilization, as drought resistance index of barley fertilized with organic fertilizers was statistically significantly higher, compared to plants fertilized with mineral fertilizers in both investigated climates. Meanwhile, a statistically significant difference between the changes in millet resistance was found only under current climatic conditions. Study reveals that different fertilization changed the physiological and biochemical response of barley and millet to drought stress, and that organic fertilizers were more effective for plants resistance to drought.

摘要

本研究的目的是评估不同施肥对大麦和小米在当前和温暖气候下抗旱胁迫的影响。在当前和温暖的气候下，与使用矿物肥料种植的植物相比，使用有机肥料种植的大麦的光合速率损失分别降低了 3.8% 和 5.6%。与负面干旱效应显着时使用矿物质施肥的损失相比，在温暖气候下，由于干旱，有机肥料的富集还导致大麦的捕获能量通量损失较低且微不足道。在温暖的气候和干旱条件下，大麦中酶抗氧化剂的产量由于有机肥比矿物肥多增加了 44%。上述指标的变化导致不同施肥下的抗旱性不同，在两种调查气候下，施有机肥的大麦抗旱指数显着高于施肥的植物。同时，仅在当前气候条件下发现小米电阻变化之间存在统计学显着差异。研究表明，不同的施肥方式改变了大麦和小米对干旱胁迫的生理生化反应，有机肥对植物的抗旱性更有效。与在两种调查气候中施肥的植物相比。同时，仅在当前气候条件下发现小米电阻变化之间存在统计学显着差异。研究表明，不同的施肥方式改变了大麦和小米对干旱胁迫的生理生化反应，有机肥对植物的抗旱性更有效。与在两种调查气候中施肥的植物相比。同时，仅在当前气候条件下发现小米电阻变化之间存在统计学显着差异。研究表明，不同的施肥方式改变了大麦和小米对干旱胁迫的生理生化反应，有机肥对植物的抗旱性更有效。