In the early spring, there are many changes in the atmosphere. Before and after the planting of vegetables, the following points must be noted:
1. Grasp the setting time. For the planting of seedlings of vegetables in protected areas in early spring, the principle of “cold-tail warmer†should be mastered. After the cold weather, sunny and hot weather lasting for more than 4 days is appropriate, so that the ground temperature can be continuously and steadily rebounded. After planting, it will help to quickly rejuvenate the seedlings. , resume growth as soon as possible.
2. Scientific formula fertilization. The production of vegetables in protected areas in early spring requires that the base fertilizer used must be sufficiently cooked. Livestock and poultry excrement must be subjected to high-temperature fermentation. Otherwise, direct application of the base fertilizer will easily induce infectious diseases and insect pests, and high temperature damage caused by fermentation will cause burning of harmful root gases, resulting in harmful gases such as ammonia. Poisoning. The combination of decomposed organic fertilizer and chemical fertilizer has the best effect.
3. Choose age-appropriate seedlings. The self-cultivation seedlings should be grading, eliminating and eliminating diseased seedlings, aging seedlings, young seedlings, and old seedlings, and selecting the most suitable high-quality seedlings is conducive to rapid seedling growth. The seedlings have a high degree of uniformity and are conducive to high yields. .
4 do warming insulation. Before and after the planting of the seedlings, the greenhouse must be maintained at a higher temperature, the higher temperature is favorable to the seedlings of the vegetable seedlings, the wound healing of the damaged roots is healed, and the roots grow rapidly. Pay attention to watching the weather forecast. Before the advent of cool weather, cover the grasshopper or keep warm at night to increase the temperature of the greenhouse. On the eve of the strong winds, do a good job of fixing the film to prevent the wind from damaging the film.
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