1, greenhouse vegetable planting technology-temperature control
Whenever greenhouse vegetables are facing the flowering and fruiting period, the temperature of greenhouse vegetables should be properly adjusted, because the suitable growth temperature is different. For example, the temperature in the greenhouse should not be too high until the flowering period of vegetables in the greenhouse. Excessive temperature will lead to the rapid death of pollen, thus reducing the pollination probability of greenhouse vegetables and making solanaceous vegetables easy to drop flowers and fruits. When the greenhouse vegetables arrive at flowering stage, it is necessary to keep the temperature in the greenhouse in a moderate state, because moderate temperature can well stimulate flower bud differentiation, so that the nutrients absorbed by the greenhouse vegetables can be smoothly transferred to the flowers and fruits of the greenhouse vegetables.
2, greenhouse vegetable planting technology encyclopedia 1- light control
In fact, it is not difficult to find that when we enter autumn, the temperature is still high, but most greenhouse vegetables have gradually begun to change from yellow leaves to fallen leaves. Why? Because these greenhouse vegetables are sensitive to light, not all temperature control. After the middle and late September of each year, the sunshine time in the northern hemisphere of our earth will be shorter and shorter, but the vegetables in the greenhouse have sensed this change of light and started to store nutrients to cope with the cold winter and lay an excellent foundation for the growth of trees and buds in the coming year.
3, greenhouse vegetable planting technology encyclopedia-water control
All plant roots are dominated by plants and have strong vitality. At the same time, the root pressure of greenhouse vegetables directly depends on the amount of watering. If we irrigate with small water, the vegetable roots will give priority to their own growth, which is called small water to promote roots. If we pour water, it will be like a flood, which will easily increase the pressure on the roots and push a lot of nutrients and water onto the heads of greenhouse vegetables, making the growing points or faucets of greenhouse vegetables unwilling to grow. This is a technical method of water control, which can well control the excessive growth of vegetables in greenhouse. Therefore, it is suggested that it is best to irrigate with a small amount of water and then apply some rooting fertilizer, so that a strong root system can be cultivated.