How to conserve orchids in summer and autumn
Orchids originated from the valley forest, sexually pleasing to the sun, afraid of the sun; avoid hot, dry, requires a well-ventilated environment. According to this growth habit, the maintenance of orchids in summer and autumn must pay attention to four points: Shade and ventilated orchids are shaded from early summer until the end of September, and their shading is not less than 70%. When shade is used, a large quantity of shade nets are used, and a small amount is placed under the north balcony and eaves. During this period, the plants should be removed and the pots and pots should be no less than 10 cm. Under the basin, it is best to use bricks to support it, increase ventilation, and make it ventilated and ventilated. In addition, it is necessary to prevent the pollution of sulfur dioxide, hydrogen fluoride and dust and other harmful substances, and promote its robust growth. Cooling and moisturizing orchids suitable growth temperature of 20 °C a 28 °C, 25 °C above the rapid growth, more than 32 °C that is forced into a dormant period, growth in a stagnant state. When the temperature reaches 30°C, cooling and humidification measures must be taken. In the open air, it can be paved with river sand or plastic film on the ground, and it can be kept on the balcony, and the sponge is kept under the basin and it is often kept moist. Spray the plants several times a day and sprinkle water on the ground. Indoor air conditioning can be used with the help of air conditioning or fans. Keep the temperature as low as possible below 30°C and stabilize the air humidity above 70%. Watering and fertilizing The vast majority of cultivated orchids are currently cultivated in soil and are mostly potted plants. Pottery soil moisture should adhere to the principle of "wet not wet, dry but not dry", watering should be carried out when the topsoil is slightly white, do not over-water, resulting in rot. From summer to early autumn, it is usually poured once a day in the early morning. After the noon, if the basin soil is dry, it is necessary to add water at any time. After mid-autumn, although the climate is getting cooler, the air is dry. In accordance with the requirements of "the autumn is not dry," we should keep the basin moist. The principles of less quantity, thinness, diligence and timeliness are applied to fertilizing orchids. This is particularly true in summer and autumn. May-September should be fertilized according to different orchid species and different growth stages. Dosing is suspended for orchids that are in dormant periods or when the temperature is above 30°C. Application of liquid fertilizer is generally 15-20 days 1, the ratio of 1:10 fertilizer, indoor solid fertilizer. The scale of production of multi-purpose fertilizer, the concentration of about 0.1%. Foliar spraying fertilizer concentration according to product descriptions. Disease prevention and pest control orchids are multi-insect pest plants, especially in high temperature and high humidity seasons. Anthracnose is the peak period from June to September, with carbendazim and thiophanate have better control effect. White diarrhea disease is sprayed with 500-1000 times of chloramphenicol injection once a day for two consecutive times to control the disease. Scale insects are the enemy of orchids. Adults are manually removed. May-June larvae hatch. Kill with drugs. Aphid and whitefly were sprayed with 10% wettable powder 500 times and sprayed twice consecutively.
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