The common name of "Brown spot" disease is gray boil fungus, which is one of the most common diseases on leek. The winter and spring are cold and the year of rain is serious. Severely often cause leaves dead, rot, can not eat, a direct impact on production. 1. Plant disease-resistant varieties. 2, agricultural control. Apply sufficient organic manure, increase phosphorus and potassium fertilizers, and improve disease resistance of crops; remove diseased bodies, and remove the diseased plants from the fields to be buried deep or burned after each harvest to reduce the source of disease. 3, chemical control. After harvesting and early onset, spraying green shield 4% agricultural anti-120 melon vegetable tobacco type 500--600 times liquid can effectively control the occurrence of disease. Agricultural anti-120 is a microbial fermentation product, non-toxic, no residue, no harm to the human body, is the preferred fungicide production of pollution-free vegetables. At the same time, containing 17 kinds of amino acids and other nutrients, can promote the growth of leeks, increase the yield of leeks. It can also be sprayed with 50% quick-release or 50% nongrilled 1000 times or 50% carbendazim 800 times. 4, clean the pastoral. After the leek is harvested, the diseased body is promptly removed, buried or burned to prevent the spread of pathogens. 5, timely ventilation and dehydration is the key to the prevention and treatment of the disease. The amount of ventilation should be determined according to the growth of leeks. Freshly cut leeks or ventilation when the outside temperature is low. Alginate Dressing,Silver Alginate,Alginate Wound Dressing,Alginate Dressing For Wound Care Henan Maidingkang Medical Technology Co.,Ltd , https://www.mdkmedical.com