Outdoor First Aid Kit used for treatment when you are outside.It is more portable and has various contents in the kit. Safty Outdoor Kits,Outdoor Portable First Aid Bag,Travel Outdoor First Aid Bag,Allround Outdoor Bag RFX+CARE Manufacturing Co.,Ltd. , https://www.rk-rfxcare.com
Recently, the reporter learned from an interview with the Gucheng Street in Shouguang City: Recently, the weather turned cold, the humidity in the shed increased, the temperature dropped, and the light weakened. The tomato leaf disease was more common. However, many vegetable farmers did not recognize the disease in time at the early stage of disease, and the medicine was not symptomatic, making it difficult to control the disease. At this time, the tomatoes are in the fruit expansion period. If the leaf diseases are not controlled in time and the function of the leaves is reduced, the yield and quality of the tomatoes will be seriously affected. To this end, the reporter consulted Wang Zhongchun, a special expert of the newspaper. According to Mr. Wang, there are three kinds of leaf diseases, namely spot blotch, early blight and late blight. Professor Wang pointed out that these three diseases are fungal diseases, and most of them develop upward from the lower leaves at the time of onset, but the specific symptoms vary greatly. The main symptoms of spot blight are: some round or near-circular small spots on the leaves. The spots are gray in the middle, dark brown on the edges, and surrounded by yellow halos. In severe cases, the leaves are full of lesions, contiguous, and sometimes perforated. Leaves yellow. The appearance of early blight leaves leaves dark brown dots, followed by round or oval dark brown lesions, dark brown concentric rings, lesions often with yellow or yellow-green halos outside the lesions, humidity when the lesions There are gray and black mouldy. Most diseased leaves of late blight disease begin from the tip of the leaf or the leaf edge, appear as water-immersed, and become dark green at the beginning, and then turn brown. Late blight on the stalk causes dark brown lesions and the disease department is sunken, resulting in tomato "black stalks." The fruit is susceptible to onset in the period of young fruit, with irregular spots and water-like scalding. The lesions begin to harden and then slowly rot. The difference between this disease and tomato early blight is: early blight is one spot, and late blight is a disease patch; blight disease is obvious, the lesion has a ring pattern, and the late blight disease is irregular, into pieces, Hot water. For the prevention and control of these three diseases, controlling the humidity in the greenhouse is the key. After the beginning of winter, the temperature dropped, the illumination time became shorter, and the ventilation decreased. This led to high humidity and long time in the shed, which was conducive to the occurrence of disease infestation. First of all, strengthen water management, reasonable ventilation, reduce the humidity inside the greenhouse to prevent the occurrence and spread of the disease. Secondly, for diseased plants, diseased leaves and dead branches should be promptly removed to reduce the source of the disease. Again, timely medication control. In the early stage of spot blight, 64% of antiviral drugs can be used 500 times, 25% of copper complexes 500 times, and chlorothalonil, carbendazim and other agents can be used for prevention and control. For prevention and control of early blight, 75% chlorothalonil 600 times, 80% mancozeb 600 times, or 58% trebic manganese zinc 700 times can be used. Prevention of late blight can be used 58% metalaxyl manganese zinc 500 times, 72% Kelu 500 times or 72.2% Prec 800 times and 69% of Anke manganese zinc 600 times and other spraying control. According to the condition every 5-7 days use 1, 2 consecutive times. If the weather is not good and the humidity in the shed is high, powder or smoke may be used.