Lotus is a traditional flower of our country. It contains the symbols of Pepsi and is a kind of ornamental plant that people in many Asian countries love. In Thailand and India, lotus is a must for Buddha.
The summer growth of the lotus is critical. According to practice, the key technologies of Xiaguan are briefly described below. One is water transfer. With the growth of floating leaves after planting, the water level can be gradually increased. After a large number of leaves are grown, the water depth can be maintained between 40 cm and 60 cm. Although lotus plants are aquatic plants, they are also afraid of drastic changes in the water level. In the summer, they should prevent sudden rise in water levels and should prepare for flood prevention in advance. The second is fertilization. Lotus Hi hi fat, in the growing season, can be directly into the rod-like chicken manure into the mud near its roots to meet its needs for nutrients. From the beginning of flowering, fertilizer can be applied every 20 days or so. The third is light. The lotus flower shines on a full day and it is best to allow it to receive more than 8 hours of direct sunlight every day. When the light is sufficient, the plants grow strong and flowering; otherwise, they grow slowly and are prone to dullness. The fourth is wind protection. In the event of a rainy day, the lotus plants are easily scraped. Therefore, precautionary measures must be strengthened to avoid sudden winds blowing the lotus, otherwise it will cause unnecessary losses. The fifth is suitable temperature. The lotus grows vigorously in a high-temperature environment and has a lot of blooming. At present, most of the lotus cut flowers produced in China are natural conditions. The plants grow rapidly between 20°C and 30°C, and the flowering optimum temperature is 25°C-35°C. Therefore, higher temperatures are required for summer growth. Sixth is weeding. Throughout the growth process, mosses, water plants, etc. in the water should be removed at any time to prevent them from competing with the lotus to compete for water and compete for space. Seventh is prevention. Lotus is susceptible to spot blight in summer, and it mainly occurs in rainy season. Most infected areas are vertical leaves, and long green leaves do not catch disease. The main symptoms are irregular rejuvenated green spots on the surface of leaves at the early stage, while the later stages are irregular. Turns dark brown and black dots are seen in necrotic areas. Control methods include timely removal, burning of diseased leaves, and reasonable fertilization. In particular, potassium dihydrogen phosphate and diammonium phosphate can be topdressed when appropriate, and 70% thiophanate WP 1000 times can be sprayed every week. Eight is pest control. Lotus is vulnerable to damage by Spodoptera littoralis, which usually occurs from June to July. Its larvae feed on lotus leaves and leave only the veins, leaving the affected leaves to be window-sanded and sometimes able to eat up the entire leaf. Can be used to add adult insects trapped in sugar water dip insects, spread during the larvae, spray 50% dichlorvos EC 1000 times in the evening, while protecting Trichogramma, parasitic flies and other natural enemies, relying on them to eliminate Spodoptera litura.
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