Abstract

The purpose of the study was to identify the influence of mineral nutrition conditions on morphogenesis and absorption of macronutrients by spring barley plants of two varieties in the period from germination to earing under controlled conditions of light culture. The objects of the study were plants of two-row barley of the Takmak variety and the Salome variety. The plants were grown by hydroponics on expanded clay under controlled environmental conditions. Four variants of nutrient solutions were prepared for watering plants: variant one (control)—Knop solution of standard concentration; variant two—Knop solution was prepared with 50% concentration from its standard concentration; variant three—solution was prepared on the basis of Knop solution but with 50% of N concentration from its standard concentration; variant four—solution was prepared on the basis of Knop solution but with 25% of P concentration from its standard concentration. As a result, variants two and three showed a decrease in total bushiness by more than 30% compared to the control. The mass of plants in variants two and three turned out to be 50 and 35%, respectively, less than in the control. The decrease in plant mass was mainly due to a decrease in the mass of lateral shoots. The level of consumption of mineral elements, closely related to the composition of solutions, affected not so much the chemical composition of plant tissues as the amount of plant biomass, which manifested itself in high correlations between the consumption of mineral elements and the gross content of these elements in plants with rather weak links between consumption and the content of mineral elements in plants.

中文翻译：

---

光培条件下矿质营养条件对春二棱大麦植株影响的实验模拟

摘要

本研究的目的是确定在受控光培养条件下，矿质营养条件对两个品种春大麦植株从发芽到抽穗期间形态建成和大量营养素吸收的影响。研究对象是塔克马克品种和莎乐美品种的两棱大麦植株。这些植物在受控的环境条件下通过水培法在膨胀粘土上生长。配制四种营养液用于浇灌植物： 方案一（对照）——标准浓度的诺普溶液；变体二——Knop溶液被制备为标准浓度的50%浓度；变体三——在Knop溶液的基础上制备溶液，但N浓度比其标准浓度低50%；变体四——溶液是在Knop溶液的基础上制备的，但P浓度比其标准浓度高25%。结果，与对照相比，变体二和三的总灌木丛减少了 30% 以上。变体二和三中的植物质量分别比对照少 50% 和 35%。植株质量的下降主要是由于侧枝质量的下降。矿物元素的消耗量与溶液的组成密切相关，其对植物组织的化学成分的影响不如对植物生物量的影响大，这表现在矿物元素的消耗量与溶液的总含量之间存在高度相关性。植物中这些元素的消耗与植物中矿物元素的含量之间的联系相当薄弱。