Cultivation and management of orchids in September

There are two solar terms this month, White Dew on September 7 and the Autumn Equinox on September 23. The average temperature is similar to that in June. In the orchid cultivation management in August, "when we enter the Beginning of Autumn this month, it is the beginning of a cool autumn, and the End of Heat's summer day is coming to an end." Both solar terms mean that the cool weather will enter in August. But in fact, there is a "autumn tiger" weather, and the temperature in August is no lower than that in July. The sun is very poisonous. The highest temperature is still between 36 and 38 degrees. A few days ago, I went to several orchid friends to have a look. Due to the continuous high temperature in August, some orchid friends suffered losses to varying degrees, and many orchids got sick. In September, there are two solar terms, White Dew and the Autumn Equinox, and the heat gradually fades away, with a slight sense of autumn. The roots and leaves of orchids are very luxuriant, so you can bask in a little more sunlight to increase the rigidity of orchid grass, enhance the ability to resist diseases and winter cold, and use a sparse curtain for shade. However, for the special weather with high temperature, it still needs shade and should not be careless. The management of water, soil, fertilizer, diseases and insect pests, ventilation, air temperature, light, etc., still cannot be relaxed. First, environmental management should continue to do a good job in the environmental management of orchids, and we should still pay attention to the ventilation of orchids. Starting from late October, we can basically end the shading work, let orchids bask in more sunshine, and enhance the orchids' ability to resist diseases and survive the winter. Second, watering management in autumn to prevent drought, that is, to prevent "water chestnut dryness", but also need more watering when dry for a long time, to avoid the basin material is too dry, it is better to be "moist". However, if the rainy day is longer, we should pay attention to water control. After the weather clears up, we can not see the pot soil slightly dry and then water it. Give bluegrass a chance to take a breath. If you want to see flowers, you need to control water to promote drying, buckle water to give birth to buds. Autumn climate is generally dry, to pay attention to increase air humidity, can spray water on the ground, conditional can use sprayer or water curtain, humidification effect will be better. However, humidification must have a "degree". If the humidity is too high, the ability of bluegrass to resist disease will decline, which can easily lead to the occurrence of disease. 3. Nutrition management this month, the temperature difference between day and night is obvious, which is the golden season for bluegrass growth. It is very important to apply fertilizer to orchid grass boldly, which can not only promote the new hair grass to grow into big grass and strong grass this year, but also promote the orchid grass to accumulate nutrients and provide a guarantee for sprouting and growing grass next year. At the same time, promote the growth of flower buds, fertilization can be done every 7 to 10 days, root fertilization and foliar fertilization take turns. Both organic and inorganic fertilizers can be used, mainly phosphorus and potash. It is better to apply fertilizer in the evening and morning. If watering fertilizer, it is best to do it in the evening and water it the next morning. Fourth, pest management this month, shell insects, red spiders, aphids and snails are still very rampant, and soft rot and black spot often occur. Attention should be paid to insecticide and sterilization, but pesticides should not exceed the normal dosage, and we should pay attention to changing drug varieties on a regular basis. Orchid farm is disinfected in a regular manner. The medication time is still better in the evening, so spraying, the retention time of the liquid is long, which is helpful to enhance the effect of insecticidal and sterilization. 5. Other management. From late this month to early October, autumn is high and crisp, which is a good time for turning pots, changing materials and planting ramets. Orchids that need to turn pots or ramets can be carried out during this period of time. At the same time, it is a golden period of introduction and trading, so we should seize the opportunity to find a new species to develop our own orchid garden. You should be willing to transfer your surplus varieties. On the one hand, you can accumulate funds to raise orchids with orchids; on the other hand, you can make friends with orchids, and at the same time, it is easy to find the varieties you need.