It is said that tomatoes should be planted in sheltered places. Why?

Accelerating germination and soaking: soak the seeds in clear water for 2-3 hours, then soak them in warm water of 50-60 degrees for 3-5 hours, and continue stirring for 15 minutes. Seeds should be evenly awakened in warm water, cooled and sown. Tomato is a cool variety, the upper limit of soil moisture is 70, and the suitable growth temperature is 22~28 degrees. The temperature at dinner is above 10 degrees. It has higher root system and higher survival rate. Harvest 1~2 times of root fertilizer after dinner, water it immediately after fertilization, and spray it several times in dry summer. Cutting too many branches and leaves will consume soil and self-nutrition, forming imaginary side branches and fruits, so it will be interrupted. The high-density leaves sitting on the fruit should also be removed, so that the effective branches and leaves can get better nutrition and light. Reduce the possibility of diseases and insect pests caused by poor ventilation. It is best to leave seven ears on a tree. There are 2~4 ears 2~4 and 3~4 ears 5. Bamboo scaffolds should be used to reduce the weight of plants.

In order to prevent the harm of germs, the seedbed should be treated with chemicals before sowing. 6 grams of 75% tremella green should be used per square meter, 3 kilograms of water should be sprayed, covered with film for 2 or 3 days, and then aired for a few days to raise seedlings. Sowing, sowing, tidal wave and ordering can be done. After sowing, cover the fine soil with 8g of 50% carbendazim per square meter. Fine soil can be mixed into the seedbed and sprayed evenly to prevent the occurrence of anthracnose of tomato seedlings. Mainly adjust seedling management, seedling temperature and light intensity, which can be adjusted to above 25 during the day, at least 15 at night, 20 ~ 25 during the day after emergence, and 10 ~ 15 at night. Homestead planting is a field where eggplant and crops have not been planted in recent years. Before planting, rotten farmyard manure should be fully applied. Tomato transplanting is usually 7~8 golden leaves, and the first bud is obviously good. In summer, tomatoes are generally planted in furrows or high-wow, which is beneficial to drainage, waterproof and disease prevention. The formal density is usually 50 ~ 60 cm for small row spacing, 60 ~ 70 cm for large row spacing and 30 cm for standing trees.

Tomatoes are warm-loving vegetables. The temperature rises in summer, but it will still affect tomatoes if it is too high. Tomato's favorite temperature is 20~25 degrees, and its assimilation is the highest. When the growth temperature is 30 degrees, assimilation is obviously reduced. Growth temperature over 35 degrees will affect the reproductive growth of tomato. The interference and destruction of high temperature will lead to the increase of tomato flowering and fruit drop, slow fruit growth, and excessive temperature at night will lead to poor fruit development. Because too high night temperature is not conducive to nutrient accumulation.

The seedling raising time of tomato planting in summer is generally from May to July. During this period, the temperature is high, there are many pests and diseases, and sometimes it is disturbed by storms and heavy rains. Therefore, it is more difficult to raise seedlings for tomato planting in summer than in other seasons. Tomatoes planted in winter need to be kept warm, while tomatoes planted in summer need to be cooled. Generally speaking, seedbeds need soil with good air permeability and rich organic matter. In order to prevent the occurrence of judgment, the seedbed was built in a higher place to prevent waterlogging caused by sudden rainstorm, and it was arranged according to the soil and fully corrupt organic fertilizer 733603. Per cubic meter of seedbed, nutrient soil sugar and special compound fertilizer for seedbed 1 kg, 80% lack methyl 100~ 120 g, and trichlorfon 100 g should be added, so that the mixed constitution is uniform. When tomato is sown and raised, it is necessary to remove the things that have been sprinkled before, turn the nutritious seeds into shells and raise seedlings as needed, and then transplant them to death, so as to reduce root damage and prevent pests and diseases.