In autumn, the ground temperature gradually declines, the roots of vegetables are severely aged, and the absorption of nutrients is hindered. In late autumn, the vegetables are in a period of prosperous growth and are prone to calcium deficiency. At this point should be re-calcium, should not be more than chlorinated fertilizer. The general symptoms of calcium deficiency in vegetables are the growth of new parts of the plant, such as apical buds, root hairs, fertility, atrophy and death, new leaves adhesion, new leaves are often coke-edge, incomplete defects; the top of the fruit is easily sunken, dark brown and necrosis. The prevention and control measures are to control the amount of fertilizer. It is not appropriate to use too much fertilizer at one time, especially chlorinated fertilizers such as ammonium chloride and potassium chloride, and timely irrigation to prevent soil drought, while spraying calcium fertilizer on leaves, calcium nitrate can be used as Spray fertilizer, the concentration of 0.3% ~ 0.5%, usually sprayed once every 7 days or so, even spray 2 ~ 3 times can be effective. Tomato should be sprayed on the upper and lower leaves of the inflorescence, 2~3, and the Chinese cabbage will spray calcium when it begins to enter the ball stage. Electric Food Warmer,Food Warmer,Chocolate Sauce Bottle Warmer,Hot Dog Warming Showcase Display Guangzhou New Power Catering Equipment Manufacturing Co.,Ltd , https://www.gznewpower.com