What is the best fertilizer for tomatoes?

When to fertilize tomatoes

After the tomato inflorescence sets fruit, start adding fertilizer, and apply quick-acting fertilizer 1-2 times to ensure that the plant does not run out of fertilizer. When the young fruits are swelling, apply 40% human manure and urine once every 10 days to achieve the best results.

What fertilizer to use for tomatoes

It is recommended to use compound fertilizer as the base fertilizer for tomatoes, and spray potassium dihydrogen phosphate plus amino acid calcium foliar fertilizer on the leaves before flowering to increase the fruit setting rate. In the early stage of fruit setting, flush with balanced water-soluble fertilizer, flush with high-potassium water-soluble fertilizer during the fruit expansion period, and spray sugar alcohol calcium on the leaves.

How to fertilize tomatoes

1. Apply sufficient base fertilizer during the planting period : Apply farmyard manure, urea, ammonium phosphate and superphosphate before transplanting tomato seedlings.

2. Fertilization during the seedling growth period : When the tomato seedlings grow to 5-6 leaves, urea, potassium dihydrogen phosphate, Hexin liquid fertilizer, and potassium sulfate compound fertilizer are commonly used, and they should be sprayed once every 10 days or so.

3. Topdressing in time during the fruiting period : Apply ammonium nitrate and superphosphate when tomatoes are setting fruit. Apply them by spreading them on the ground and then flushing them in with water. During the peak fruiting period, spraying fertilizer on the leaves can be combined with spraying.

Precautions for fertilizing tomatoes

First control : Before tomatoes set fruit, they should be fertilized according to the seedlings. If too much fertilizer is applied and it is too concentrated, it will easily cause the plants to grow too tall and even cause the flowers and fruits to fall off.

Second promotion : Tomatoes should be quickly top-dressed with quick-acting fertilizers 1-2 times during the harvest period to ensure that the plants do not lack fertilizer. Generally, human feces and urine should be applied every 10 days on sunny days.

The third taboo : Do ​​not fertilize tomatoes intensively when the soil is relatively wet and the temperature is high, as this will easily cause the plants to grow too tall and produce fertilizer damage, leading to physiological diseases such as flower and fruit drop.