Abstract

The research was performed to identify the most promising populations of alfalfa (Medicago varia Martyn.) for their use in variety change. The work was performed under the conditions of the southern forest-steppe of the Middle Volga region in 2018–2021. The material for the study was represented by five promising populations of alfalfa. The released variety Izumruda was taken as the standard. The soil of the experimental plot was represented by typical medium-humus heavy loamy chernozem with the humus content of 5.2% in the plow layer; the content of mobile potassium and phosphorus (according to Kirsanov) at the level of 292 and 156 mg/kg of soil, respectively; the amount of easily hydrolyzable nitrogen of 116–132 mg/kg of soil, and pH of salt extract equal to 6.9–7.2. The seeding rate was 15 kg/ha. The largest total mean yield of green mass for the years of research was provided by samples Populyatsiya 24 (39.5 t/ha), Temno-zelenaya (39.9 t/ha), and Populyatsiya 13 (40.2 t/ha), which was by 11.0–12.9% higher than the yield of standard variety Izumruda. The production of dry matter in total of two cuttings was the highest for the varieties Populyatsiya 4 (9.4 t/ha), Temno-zelenaya (9.5 t/ha), and Populyatsiya 13 (10.2 t/ha), which exceeded the standard by 11.9–21.4%. The high content of protein and carotene was typical for the varieties Temno-zelenaya (16.74% and 115 mg per 1 kg of feed, respectively) and Populyatsiya 13 (16.62% and 110 mg per 1 kg of feed, respectively), and the protein content was the highest (16.77%) for Populyatsiya 24.

中文翻译：

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伏尔加河中游气候条件下紫花苜蓿（Medicago varia Martyn.）品种变化的前景

摘要

该研究旨在确定最有前途的苜蓿（Medicago varia Martyn.）种群，用于品种变化。这项工作是在2018-2021年伏尔加河中部地区南部森林草原的条件下进行的。该研究的材料以五个有前途的苜蓿种群为代表。以已上市品种Izumruda为标准。试验地土壤为典型的中腐殖质重壤土黑钙土，耕层腐殖质含量为5.2%；移动钾和磷的含量（根据基尔萨诺夫）分别为 292 毫克/千克土壤和 156 毫克/千克土壤；易水解氮含量为116-132毫克/千克土壤，盐提取物的pH值为6.9-7.2。播种量为15公斤/公顷。研究多年中最大的绿色物质总平均产量由样品 Populyatsiya 24（39.5 吨/公顷）、Temno-zelenaya（39.9 吨/公顷）和 Populyatsiya 13（40.2 吨/公顷）提供，比 11.0 – 比标准品种 Izumruda 的产量高 12.9%。两次扦插的干物质产量最高的是Populyatsiya 4号（9.4吨/公顷）、Temno-zelenaya（9.5吨/公顷）和Populyatsiya 13（10.2吨/公顷），超标了11.9–21.4%。蛋白质和胡萝卜素含量高是 Temno-zelenaya 品种（每 1 公斤饲料分别为 16.74% 和 115 毫克）和 Populyatsiya 13（每 1 公斤饲料分别为 16.62% 和 110 毫克）的典型特征。其中 Populyatsiya 24 含量最高（16.77%）。