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Reducing freezing rain in many places in the south, defense measures should be strengthened
The Central Meteorological Observatory continued to issue a frozen yellow warning at 06:00 on January 19th: It is expected that there will be freezing weather in most parts of Guizhou, northeastern Yunnan, western and southern Hunan, northwestern Guangxi, etc., from 08:00 to 21:00 on the 19th, among which Guizhou There will be freezing rain in parts of most parts of Yunnan, northeastern Yunnan, and central and southern Hunan.
First, the impact on crops
1. Low temperature, illuminating, and freezing rain have a certain degree of influence on the growth of vegetables, potatoes, bananas, etc., mainly in slow growth;
2. The sugarcane, potato and other crops in the field of low-lying stagnant water have a rotten root and die due to the long time of freezing rain in the frozen rain; Co.,
3, the new species of sugar cane due to low temperature rotten and germination delay phenomenon.
Second, prevent freezing damage technical measures
1. For crop plots with low water accumulation, the drainage ditch should be excavated, water should be removed in time, soil permeability should be improved, and rotten roots should be prevented.
2. Adopt a method of covering the agricultural film on the dwarf vegetables to increase the temperature to prevent frostbite.
3, the new species of sugar cane should be covered with mulch film planting, in order to increase the temperature, to prevent frostbite, and to promote germination.
4. Spray foliar fertilizer. In the rainless days, the vegetables, potatoes, fruit trees and other crops are sprayed with 150 grams of potassium dihydrogen phosphate per day, and 75 kg of water and 50 kg of water are sprayed on the leaves to prevent freezing and promote growth.
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