как нагреть землю в грядках для раннего урожая? февральская подготовка теплицы к сезону Москва

continuation of testing a warm bed with a solar oven in my greenhouse. in my opinion, this is the most natural farming. to get an earlier harvest, I start preparing the greenhouse in February. The tool I use is https://ya.cc/m/dH076gi what I do and why, watch this video. links to the videos I mention solar oven: part one - solar oven manufacturing -    • солнечная печь для теплицы изготовление со...   part two - solar oven heating the bed with film on March 9 -    • солнечная печь прогрев грядки пленкой 9 марта   part three - solar oven planting Mongolian dwarf seedlings on April 8 on a warm bed -    • солнечная печь посадка рассады монгольский...   part four - solar oven conclusions on May 6 -    • солнечная печь выводы и сравнение рассады ...   greenhouse with a secret -    • Video   how and why I buried leaves -    • Video   music - Coivo (Nikita Uzhegov)