【米作りの真実】いつ・何を・どれだけ吸う？4大成分の消費スケジュール完全解説【窒素・リン酸・カリ・ケイ酸】

"Why do we drain the rice plants mid-season?" "When should we apply top dressing?" "Is silica really that important?" This video connects all the "whys" of rice cultivation. It provides a complete explanation of the amount and timing of nitrogen, phosphorus, potassium, and silica absorbed by Koshihikari rice throughout its life, broken down by growth stage. [Timestamps] ▼ Video Contents 00:00 Opening ~ All your fertilization questions are connected! 01:25 [Chapter 1] What you need to know first to eliminate wasted fertilizer 02:52 [Chapter 2] The period immediately after transplanting is a "run-up period" ~ The true nature of the explosive consumption during the tillering stage 05:32 [Chapter 3] Half of the silica disappears during the panicle-filling stage! The shock of the "glass skeleton" 07:20 [Chapter 4] Potassium is almost zero during the ripening stage ~ Why only silica continues to move until the end 08:35 [Chapter 5] Potassium circulates when rice straw is returned! How to Replenish the Silicic Acid Lost Every Year 10:15 Summary ~ A Timeline for When You're Unsure About Fertilization Design Do you know how much nutrients Koshihikari rice needs in its lifetime? Per 10 ares of rice paddy, it needs 8.5 kg of nitrogen, 4.5 kg of phosphorus, 11 kg of potassium, and 100 kg of silicic acid. By absorbing this "total amount for its lifetime" in the necessary amounts at the necessary times according to its growth stage, Koshihikari rice achieves yield, quality, and lodging prevention simultaneously. If the timing is off, the fertilizer will not be absorbed even if applied, or it may even cause harm. Why is mid-season drainage necessary during tillering? Why is top dressing applied around heading? Why is an overwhelming amount of silicic acid needed? — Knowing this schedule connects the meaning of all the work. I have summarized what I have learned based on data from the Ministry of Agriculture, Forestry and Fisheries and materials from agricultural research stations. [Editor's Note] While making this video, I was reminded that rice farming is "agriculture of timing." Delivering the right nutrients at the right time directly impacts both yield and quality. Even with the same fertilizer, the results vary greatly depending on the timing. This is something that can make a big difference, so I hope you'll use this as a reference for your fertilization planning. It would be fantastic if this video helps you transform your "hunch" into "understanding and doing it right." YouTube Channel:    / @tano41com   Job Inquiries: https://forms.gle/xGssx42FRMg1yJRD7 This channel features Tome-san, who is currently studying rice farming, explaining his research in an easy-to-understand way. Farmers and those interested in agriculture, please subscribe and check out the channel! #ricefarming #ricecultivation #agriculture #silicicacid #fertilizationplanning