For winter and spring vegetables, cultivating robust plants is the center of management after planting. Robust plants help to increase the plant's own resistance to diseases and plants and its ability to produce continuous results. I believe that: after planting, temperature management should be carried out, which is conducive to Miao Qi Miao. Warming after planting to promote the slow seedlings in the deep winter season, in order to prevent the seedlings from seedlings under low temperature, the seedlings will grow slowly and the roots will slow down. It is easy to form the seedlings and affect the normal development of the plants. Pay attention to less or no release of air and improve the sheds. temperature. Raise the greenhouse temperature is beneficial to the strengthening of the metabolism of the seedlings themselves, which is conducive to rooting, and thus will also help the seedlings. Under normal circumstances, solanaceous vegetables can maintain 25-30 °C during the day, melons 28-32 °C, 15-18 °C at night, which can promote rooting and speed up seedlings. The problem to be paid attention to is that the time for raising the greenhouse temperature in the closed greenhouse should not be too long, and it is usually 2-3 days. 2-3 days after the new root was born, the slow seedling was completed. In particular, the vegetable seedlings ordered from the nursery factory require temperature control after 2-3 days. Otherwise, the environment with high temperature and high humidity in the shed causes the plants to grow in length, which makes the nutrition grow too much, the reproductive growth is inhibited, the flower buds are poorly differentiated, and the plants set fruit less. After the seedlings are cooled, the low-temperature seedlings are subjected to low-temperature seedlings, which can effectively improve the resistance of the seedlings. After 4-5 days of planting, we saw that white roots in the planting hole gave birth, indicating that the roots grew well and had passed the slow seedling period. At this time, the seedlings should be released to promote the formation of strong trees. After easing the seedlings, timely ventilation should be carried out. When the shed temperature is higher than 28°C, the wind should be released. During the first day, the shed temperature is kept at 25-28°C, and at night it is 15-16°C. Afterwards, it gradually cools down to 22-25 during the day before flowering. °C, night 12-14 °C, temperature difference maintained at 10-15 °C. Of course, it is also not possible to cool down excessively and prevent cold seedlings from growing cold. At a suitable temperature and a large temperature difference between day and night, plants grow robustly, with short internodes and well-developed root systems, which are conducive to fruit setting.
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