When growing peppers in greenhouses, proper management during the seedling stage is crucial for healthy plant development. Here are key aspects to focus on: First, temperature control is essential. Once the two cotyledons have fully opened, it's time to ventilate the greenhouse to lower the indoor temperature. Ideally, daytime temperatures should be kept between 23-25°C, while nighttime temperatures should remain around 15-17°C. After transplanting, adjust the temperature to 20-25°C during the day and 12-15°C at night. Maintaining these conditions helps prevent weak or leggy growth. Second, proper thinning of seedlings is necessary. Many farmers tend to over-seed or sow unevenly, which can lead to overcrowded, weak, or elongated seedlings. At this stage, it's important to remove any deformed or unhealthy plants and ensure that each seedling has enough space to grow. The spacing should follow the principle of being well-distributed and not shaded, allowing for better air circulation and light exposure. Third, timely seedling division is important. When the seedlings have developed two true leaves, it's time to separate them. This helps expand their root zone, improves light access, and encourages stronger lateral root development. If delayed, seedlings may become too crowded and develop a leggy, weak structure. A spacing of 6 cm square is recommended for optimal growth. Fourth, careful water and fertilizer management is critical. From the time the seedlings emerge until the cotyledons open, watering should be controlled to avoid excessive growth. After the seedlings have settled, a light irrigation followed by gentle soil cultivation (about 2-3 cm deep) is recommended. If nutrient levels are low, you can apply a foliar spray of 0.3% urea or 0.2% ammonium sulfate. One week before transplanting, applying approximately 1000 kg of organic fertilizer per acre can help enrich the soil. Additionally, a foliar spray of 0.2% potassium dihydrogen phosphate or superphosphate can further strengthen the seedlings and prepare them for transplanting. Vegetable Powder,green vegetable powder,dehydrated vegetable powder,Natural Vegetable Powder,bloom vegetable powder Shaanxi Zhongyi Kangjian Biotechnology Co.,Ltd , https://www.zhongyiherbs.com
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