In the summer, hot storms often hit crops, especially vegetables. After hot rain, the stems and leaves of vegetables stick to the ground sediment, and the stomata on the leaves are blocked, which seriously affects the respiration, transpiration and photosynthesis of vegetables. In addition, the vegetable plants attacked by the hot rainstorm were blown, the stems and leaves were broken, the soil was compacted, and the air in the soil was significantly reduced. The roots were forced to undergo anaerobic respiration and cause cell poisoning to die. In addition, after the hot storm hits, the weakening of the resistance of vegetables will cause recurrence and spread of diseases, and the losses caused are inestimable. Then, how should the vegetables after the attack be treated? According to the experience of agricultural technicians, the following four aspects should be mainly grasped. 1. Watering the affected vegetables in time or irrigating cold water or cold well water. When the hot rain storms are over, it is best to organize artificial watering immediately. In areas with cold spring water or well water, it is best to water and wash away the sediment adhering to the stems and leaves. In order to reduce the soil temperature, increase the oxygen in the soil and keep the vegetables in normal breathing state. 2. Organize manual sand washing and plant righting. After a hot storm, the leaves are often covered with mud, which can affect the growth of vegetables. Only by washing away the sediment adhering to the stems and leaves, and immediately correcting, reducing the phenomenon of mutual squeeze, it is possible to make the normal growth of vegetables. 3. Spray foliar fertilizer in time. After the hot rain hits, the activity of vegetable roots is very weak and the water absorption is poor. At this time, foliar fertilizer should be sprayed in a timely manner, and potassium dihydrogen phosphate should be added to the foliar with 1% imported urea to enhance the ability of absorbing fertilizer and quickly restore vitality. 4, timely cultivating loose soil and pest control. After removing the waterlogging, the soil should be ploughed in time and the ash should be sprayed or sprayed before the dew is dry to prevent some disease infections and large areas from occurring.
Curcumin
Curcumin is a yellow pigment extracted from the rhizome of turmeric. Curcumin has long been used in food industry as a Natural Pigment. It is stable to reducing agents, has strong coloring power and does not fade easily, but is sensitive to light, heat and iron ions. Mainly used for dyeing canned, intestinal products and sauces. Curcumin also has important economic value and a wide range of pharmacological effects, such as hypolipidemic, anti-oxidation, anti-inflammation, anti-atherosclerosis and so on.
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