Каузальні залежності між продуктивністю пшениці й біологічною активністю, вмістом у ґрунті азоту

Олег Стасів, Ангеліна Дубицька, Оксана Качмар, Олександр Дубицький, Оксана Вавринович
Отримано: 27.02.2025 Доопрацьовано: 17.07.2025 Прийнято: 27.08.2025
Взято з Том 28, № 8, 2025 Сторінки: 30-50
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Анотація

Висвітлення компонентів каузальних залежностей продуктивності сільськогосподарських культур, опосередкованих N-, C-хімічними, біологічними індикаторами ґрунту (розміри пулів відповідних доступних форм, ферментативних активностей) у контексті теоретичних аспектів обігу ресурсів у ньому, є потенційно важливим для конструювання систем оціночних критеріїв здоров’я ґрунту з використавнням моделей машинного навчання (ML). Мета роботи полягала у відшуковуванні статистично валідних і змістовних координацій і каузальних зумовленостей маси зерна на площу посіву доступними формами N, C (неорганічний і легкогідролізований N – N_IN, N_EH; C лабільного гумусу – C_LH), in situ протеолітичною PA, in vitro уреазною UA активністю у асоціації з концепціями обігу зазначених органогенів у ґрунті під пшеницею озимою за прототипних екологічно безпечних систем добрив. Використано наступні методи: польові, аплікаційний (in situ), лабораторно-аналітичні хімічні й біохімічні, морфометричний, статистичні, ML-моделювання. З високою ймовірністю приріст GM був спричинений адитивним зростанням N_IN, N_EH, одночасним зменшенням in situ PA у спосіб, за якого вплив in situ PA на GM опосередковувався переліченими формами N. Статистично менш валідним було опосередкування дії співвідношення N_EH до N_IN на GM через in situ PA з, можливо, взаємно доповнюючими предетермінуваннями форм N, що втім, створювало основу для обгрунтування одночасних взаємно протилежних зумовеностей GM цими формами N й in situ PA. Правдоподібно, що C_LH й in vitro UA не брали участі у розвитку GM за даних експериментальних умов, проте не виключено, що друга серед цих змінних може більш значуще впливати на варіювання першої, ніж навпаки. Дослідження у такому руслі дозволять сформувати дискурс теоретичних передбачень стосовно удосконалення структури індексів якості ґрунту у напрямку розкриття аспектів закономірностей сприяння необхідному для розвитку стійкого сільського господарства балансу між характеристиками агроекосистемних послуг, з урахуванням хімічних і біохімічних властивостей обігу N і C у ґрунті, й біопродуктивності сільськогосподарських культур

Ключові слова

доступні форми азоту у ґрунті; вуглець лабільного гумусу; протеолітична й уреазна активність ґрунту; маса зерна пшениці озимої; експлораторний факторний аналіз; системи одночасних рівнянь; каузальні зумовленості

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