Precise use of chlorinated fertilizers in autumn vegetables
With the gradual decline in temperature, the ground temperature will also be reduced, the roots of vegetables are severely aged, and the absorption of nutrients is hindered. However, Qiuyan vegetables are in a prosperous period and are prone to calcium deficiency. At this time, calcium should be refilled, but chlorinated fertilizer should be used with caution. . The general symptoms of calcium deficiency in vegetables are new parts of the plant, such as budding of the terminal buds, root hairs, atrophy and death, new leaf adhesions, new leaves that are often coke-edged, incomplete, and the top of the fruit is easily sunken and dark brown and necrotic. How to prevent? The author believes that the amount of fertilizer should be controlled. It is not appropriate to use too much fertilizer at one time. In particular, chlorinated fertilizers such as ammonium chloride and potassium chloride should be promptly irrigated to prevent soil drought. At the same time, calcium fertilizer should be sprayed on the leaves and calcium nitrate can be used as spray. Fertilizer, the concentration of 0.3% to 0.5%, generally spray once every 7 days, even spray 2 to 3 times can be effective. Tomato should be sprayed on the upper and lower leaves of inflorescence 2 to 3 on the flowering stage. Chinese cabbage sprays calcium when it enters the ball stage. YT-S350 Rechargeable Hearing Aid,BTE Hearing aid,analog Hearing aid Shenzhen Sunshine Technology Co.,Ltd , https://www.yatwinsz.com