Summer, for novice LAN you, is undoubtedly a bad news. In summer, the climate of high temperature and humidity is the most rapid growing season of pathogens. If we are not careful, the leaf surface of orchid grass will appear burning point, black spot and patch, or even soft rot, stem rot, seedling collapse. So how do we manage orchids in summer? Let's read on!
Management of orchid in summer: orchid (national orchid) belongs to orchid genus. It grows in the shrubbery of Chongshan mountain. It likes the soft sun and dislikes the direct sunlight. It likes the dry and ventilated environment and is afraid of humid and hot places. Although orchid grass is afraid of muggy heat, it is not afraid of high temperature, because high temperature can induce the leaves of orchid grass to thicken, enhance the growth toughness of orchid grass, and then improve the adaptability of orchid grass to the environment. The predecessors of Yilan in ancient times and the old orchid people in Jiangsu and Zhejiang regions often practice grass in summer, which means that they are familiar with this habit of orchid grass. In addition to preventing soft rot caused by high temperature and high humidity, it can also promote flower bud differentiation by controlling water, and form flower buds in autumn.
In fact, high temperature summer is the most vigorous period for orchid growth. The new seedlings unearthed in spring grow and thrive during this period, and the flower buds of orchid grass also differentiate and breed in this period. As long as the management is proper, it is not only unnecessary to worry about falling grass due to diseases, but also can accumulate energy for new buds and bud breeding in autumn.
Management of orchid in summer: 1 Improve the ventilation of the orchid room: open all the windows in the orchid room to make the air fully convective, and start all the ventilation fans. The upper fan of the orchid room is set to exhaust the hot air, and the lower fan is set to supply air to draw in the cool air, so that the air in the orchid room can be fully convective. In this way, even if the temperature in the orchid room is higher than 35 ℃ - 40 ℃, there is no need to worry about the occurrence of air convection Pour out the grass.
2. Keep the orchid house dry: many novice orchid friends worry that the high temperature in summer will damage the orchid grass, so they often spray water on the orchid leaves or use wet equipment in summer, in order to improve the relative humidity of the orchid house so as to achieve the effect of cooling down. As a result, they suffer from black spots on the orchid leaves or even soft rotten grass. Although the temperature is high in summer, the humidity is also relatively higher than other seasons. If the relative humidity of orchid house is increased in this season, the orchid house will become a place for rapid breeding of pathogens. Under the condition of imperfect air convection, orchid grass is easy to die due to transpiration. Therefore, it is absolutely important to keep the relative humidity of orchid grass in summer.
Improve the ventilation of Lan Fang
3. Strict control of watering time: summer is the time for the growth and rejuvenation of orchid grass and the differentiation of flower bud. During this period, the watering time of orchid grass should be strictly controlled. Too high temperature in the daytime and dry plant materials are not good times for watering. I think that watering in summer should be carried out at night when the temperature is slightly lower, because when the temperature is higher than 30 ℃, the orchid grass will enter the dormancy state. At this time, the orchid grass can not absorb the water, but will accumulate in the orchid basin, causing the root rot and empty root, which is also easy to cause soft rot and grass collapse, leading to irreparable regret. Moreover, strict water control in summer to keep the orchid basin slightly dry can induce the orchid grass to have a sense of crisis and promote flower bud differentiation. Therefore, strict control of water supply and watering timing is also an important issue in the management of orchid grass in summer.