Early spring vegetable planting points!

    At present, early spring vegetables have started to be planted one after another, but if the seedlings are not refined in advance, the time of planting is well mastered, and the watering of planting is not equal, the seedlings may directly suffer from freezing damage, stem rot and other conditions.

When the crops are planted, how should we manage them so that the crops can grow better and have a higher survival rate?

Preparation before planting

    1. Refinement

    What is seedling? Seedling hardening is the process of forcibly exercising the seedlings by taking measures such as air release, cooling down, and proper water control under the condition of raising seedlings in protected areas, so that the seedlings can quickly adapt to the adverse environmental conditions of the land after planting, shorten the time for slowing seedlings, and enhance the understanding of the environment. Resistance to low temperature, strong wind, etc.

If vegetables are to be transplanted and planted quickly, grow well, grow strong, have strong stress resistance, and be able to bloom early, bear fruit, and mature early, it is necessary to scientifically refine seedlings before planting, and master the methods of hardening. time.

    2. The time of hardening

    The time of hardening is generally about a week, that is to say, it should be carried out 7-10 days before transplanting and planting. The first 5-7 days are generally temperature-controlled, water-controlled, and properly ventilated, and the next 3-4 days are generally continued. Cooling, water control, comprehensive ventilation, etc., to promote the seedlings to fully adapt to the environment after transplanting.

    3. Temperature management during seedling hardening

  During seedling hardening, for temperature management, the temperature can be slightly higher during the day (temperature-loving vegetables can reach 15-20 ℃, cold-tolerant vegetables can reach 15-18 ℃), and the night temperature can be slightly lower to about 12 ℃. To ensure that the seedlings are not damaged by freezing, the temperature at night should be reduced as much as possible.

    Colonization management

    1. Colonization time

    From the perspective of being conducive to cultivating strong roots, it is recommended that you choose to plant in fine weather, and it is best to maintain 2-3 consecutive fine weather.

   Although the seedlings will wilt slightly when planted in fine weather, this kind of wilting is the self-regulation of the seedlings and the changes made by the seedlings to adapt to the environment. grow deeper.

    2. Colonization method

    The crops planted at this time, tomatoes must be planted in ridges, because at this time it is still in an environment with low ground temperature and low temperature. Ridge cultivation is conducive to slowing the seedlings and can also increase the ground temperature. When planting in early spring, it is generally necessary to plant shallower, because the temperature in early spring is low, and it is not easy to grow roots when planted deep.

    3. Temperature management

    After planting the slow seedlings, it is necessary to properly increase the temperature difference between day and night for squatting seedlings, which can promote the vegetable seedlings to become stronger.

Under normal circumstances, in the spring, when the weather is sunny, the greenhouse can maintain a higher temperature, so we do not need to reheat. However, in cloudy and rainy weather, the shed needs to be heated by thermal insulation materials such as thermal insulation quilts and straw curtains (the temperature is kept at about 16 °C, which is 4 °C lower than that at night).