Prevention and control of pests and diseases of Lagotis chinensis
Rabbittis is popular among horticulturists for its unique rabbit-ear-shaped leaves, but pests and diseases often put growers in trouble. This article starts with the analysis of growth habits, systematically analyzes the three major types of pest and disease control strategies, and is supplemented by high-definition real-life illustrations to help you create a healthy and lush orchid potted plant. The three elements for healthy growth of Rhinotis bungeanum are simulated in the original environment. Rhinotis bungeanum is native to subtropical forests. Cultivation needs to maintain a growth temperature of 18-28℃, and the air humidity is recommended to be controlled at 60-80%. Select a ratio of pine bark, volcanic rock and humus soil of 3:3:4 to ensure that the matrix is loose, breathable and weak acid (pH 5.5 -6.5). The golden rule of water and fertilizer management adopts the "see dry, see wet" irrigation method. After the substrate surface turns white, water is slowly injected along the edge of the basin. During the growth period, special orchid fertilizer diluted by 2000 times is applied every half of the month, and fertilizer is strictly stopped in winter and summer. Pay special attention to using rainwater or tap water that has been left standing for 3 days to avoid salt accumulation. Practical plan for disease prevention and control comprehensive prevention and control of white silk disease occurs frequently in the plum rainy season (June to August), and silk-like mycelium appears at the base of the leaves in the early stage. Emergency treatment requires immediate replacement of the disinfection substrate (steaming at high temperature for 30 minutes) and 800 times solution of 40% pentachloronitrobenzene powder is used to irrigate roots. The focus of prevention is to keep the basin spacing ≥20cm to enhance ventilation and light transmission. (T-J) The disease spots in the disease management system expand in concentric circles. It is recommended to use alternating spraying of thiophanate-methyl (1000 times) and Bordeaux mixture, focusing on the back of the leaves. In conjunction with pruning of diseased leaves (the cutting edge is more than 3 cm away from the diseased spot), the pruning tools need to be disinfected with alcohol flame. Key technologies for pest control, scale insect eradication plan. When beige scale insect insects are found, they are first physically removed with a soft bristle brush, and then sprayed with 1500 times 40% Suicai emulsifiable concentrate. For the eggs in the pot soil, 3% carbofuran granules (5g/pot) can be buried and applied, and watering is prohibited within 7 days after application. The environmental control and prevention system is equipped with a 12-cm USB small fan for regular ventilation three times a day, and a temperature and humidity meter is used to monitor in real time. It is recommended to hang yellow sticky insect boards in the cultivation area to trap and kill disease and insect vectors such as whiteflies in advance.
By establishing a management system that "puts prevention first and combines prevention and control" and cooperates with scientific diagnosis and disposal measures, the incidence of pests and diseases in Laginaria can be reduced by more than 80%. Regularly check hidden parts such as leaf axils with a magnifying glass. Early detection and early treatment are the core keys to keeping plants healthy.