Leek rust mainly infects leaves and pedicels and is a disease caused by fungi. It is mainly transmitted by airflow. In the early stage of the disease, there is a small orange-orange frill on the epidermis that is hammer-shaped or oval-shaped. There are often yellow halos around the lesion. Later it expands into a larger freckle. After the epidermis ruptures, an orange-yellow powder is scattered. Both sides of the leaves can be infected, and small black spots appear on the leaves and stems of the later stages. When the disease is serious, the lesions cover the entire leaves, the whole leaves of the leek turn yellow, and many rust powders are emitted, losing the value of food. The prevention and control methods used to adapt to the different varieties of good quality: such as Beijing Dabaigen, Beijing Daqing Miao, Hanzhong Dongyu, Shouguang radix red, Shandong 9-1 and other fine varieties, can reduce the incidence. Rational rotation reduces bacterial accumulation. Planting Daejeon should be a fertile, organic-filled plot. Before planting, it should be irrigated with water, enough basal fertiliser should be applied, and 3,000 kg of farmyard manure and 30 kg of compound fertilizer should be applied to the full-fermented manure per acre, and disinfectant should be sprayed on the surface. Add 800 times the new high-fat membrane to disinfect the soil. Properly densely planted to achieve good ventilation and light transmission, timely drainage after rain, to prevent the field humidity is too high; the use of formula fertilization technology, more application of phosphorus and potassium fertilizers, improve disease resistance, while spraying a new high-fat film 800 times to form a protective film, To prevent germs from invading through the air flow, and spraying Zhuang stalks at the appropriate time during the growth stage of leeks, the stems of the plants can be stout, the leaves are thick, the leaves are fresh, the plants are lush, and the natural taste is thick. At the time of harvest, cut as low as possible and take care to clean the noodles. After spraying, 45% sulphur glue suspension is sprayed on the surface and 400 times of the liquid is disinfected. At the same time, 800 times of the new high-fat film is used to enhance the efficacy and improve the utilization of the effective ingredients of the pharmaceutical. Control effect. In the early stage of the disease, spray 25% Propiconazole Emulsion 3000 times or 25% Tebuconazole Emulsion 3000 times, 30% Diphenyl Ethyl Cyclohexane Emulsion 3000 times, and 15% Triadimefon WP 2000 times. Liquid, spraying once every 10 days or so, control 2 times. In the case of heavy land masses, the chemicals cannot be prevented. It is best to cut the roots from the ground, spray the fungicides once in the left roots, and strengthen the management, increase the fertilization, and accelerate the growth of the leeks so that the leeks can grow again. Fire Alarm By Loft/Utility,Fire Alarm By Loft,Fire Alarm By Utility,Loft Room Smoke Alarm Guangdong Isafenest Co.,Ltd. , https://www.isfenest.com