Winter tomato flowering should result in nitrogen

The interval between the first flushing and the second flushing of tomato is about 15 to 20 days, and the time is relatively short. At this time, the amount of nitrogen fertilizer applied is used according to the tomato's 20% of the total nitrogen fertilizer demand. 24~36 kg can be. This can not only meet the needs of plant growth on nitrogen fertilizer, but also promote the fruit set of the flowering of tomatoes.

When the second fruit of the tomato grows to the size of the walnut, and begins to expand rapidly, it is necessary to conduct the second topdressing, and the amount of nitrogen fertilizer should be appropriately increased. Farmers can use 25% of the total nitrogen fertilizer demand of tomatoes, that is, 40-45 kg of nitrogen fertilizer per acre, to meet the vegetative growth of plants on nitrogen fertilizer needs. When the third fruit of the tomato enters the rapid expansion stage, the third fertilizer is applied, and the amount of topdressing can be the same as the amount of the second fertilizer.

When the tomato's fourth panicle enters the rapid expansion stage, the last top-dressing is performed. This is because the first few panicles of the plant have grown and picked, and the growth of the plant begins to decrease. Therefore, the amount of nitrogen fertilizer used at this time can be About 10% of the total nitrogen fertilizer use, the content of soil can meet the needs of tomato growth.

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