This is a visual rehabilitation device. It has the function of history storage. In order to facilitate the use of training again, users can store the training mode. Next time, the training mode only needs to be called. Our products have two dimensional vision tracking and circular vision tracking
Visual Rehabilitation Equipment Low Vision Devices,Blind Cane,Computers For The Blind,Visual Rehabilitation Equipment jinan Fangqi Sunshine education consulting CO.,LTD. , https://www.fzrehabmarket.com
Disease prevention and control of leek
The leeks are prone to epidemics in the summer with high temperature, rain, and high humidity. Control measures: 1. Selection of disease-resistant varieties. Before seeding, use a new high-fat membrane dressing to isolate the virus infection, strengthen the respiratory intensity, and increase the germination rate of leek. 2, rotation down. Implement rotations to reduce the source of bacteria. Generally 4-5 years for 1 time, can reduce the occurrence of disease, and timely spraying of new high-fat membrane moisture-proof moisture evaporation, soil compaction, isolation of pests and diseases. 3, strengthen fertilizer and water management. Should pay attention to increase organic fertilizer, reasonable irrigation, in particular, should pay attention to the timely removal of stagnant water after heavy rain, to prevent excessive humidity in the field, in the growing season of chives timely spraying vegetables Zhuang stalk can make plant stem thick, leaf hypertrophy, fresh leaves color, At the same time, it can improve the anti-disaster ability of leek. 4, pharmaceutical control. In the early stage of disease, it should be sprayed with a new high-fat film to form a protective film, enhance the efficacy, and prevent the invasion of gas-borne pathogens.