Cotton in some areas suffered from low temperature and cold damage. The “Grain and Cotton Disaster Prevention and Reduction” team put forward 4 suggestions
Although heat conditions in Xinjiang have increased in recent years under the background of global warming, sudden drops in temperature and persistent low temperatures caused by extreme weather have occurred from time to time, especially during the spring sowing and seedling growth periods. Especially obvious. Affected by the cold wave, sandstorm, rain and snow that began on May 1, the temperature across Xinjiang was abnormally low from May 1 to 6. Extreme low temperature events occurred in the agricultural areas of southern Xinjiang, and crops in northern Bazhou and northern agricultural areas of Aksu region suffered. Frost disaster: some wheat in southern Xinjiang suffered from low temperature and cold damage; crops such as cotton and corn in northern Xinjiang, northern Bazhou and Aksu suffered from low temperature and cold damage; parts of Bozhou, eastern southern Xinjiang, Aksu and Kashgar suffered from wind and sand disasters.
In response to the recent impact of low temperature disasters on agricultural production in most of Xinjiang’s agricultural areas, the autonomous region’s key research and development project “Grain and Cotton Disaster Prevention and Reduction” team suggested this:
1. Real-time smoke: When the temperature is below 0℃, smoke is released in the fields to prevent frost disasters.
2. Timely cultivating: Through cultivating, the ground temperature will be increased, the soil’s permeability will be increased, root development will be promoted, and stress resistance will be improved.
3. Early chemical control: Spray plant growth regulators with strong cold resistance (such as: 24-epibrassinolide, 14-hydroxybrassinolide, coronatine, algin oligosaccharide, etc. ) and potassium dihydrogen phosphate foliar fertilizer to enhance root vitality and break leaf stress.
Fourth, select opportunities for micro-irrigation: When the temperature is higher than 20℃ for three consecutive days, according to the soil texture, moisture content and seedling condition, apply microbial agents such as Yushu Miao, Soil-borne Doctor and fertilizers such as potassium fulvic acid with water drops. , improve the soil environment, increase root vitality, and promote early onset. The amount of dripping water must be reduced as much as possible, and bacterial fertilizers can be applied uniformly. Otherwise, excessive water will lower the ground temperature and aggravate the occurrence of root rot diseases and root rot.
Warm reminder: Disaster prevention and reduction are always on the road! Firmly establish the idea of ”prevention first, disaster relief secondly”. We must attach great importance to the construction of disaster early warning platforms, select resistant varieties, standardize seed coating, soil deep loosening, increase the application of organic fertilizers and microbial agents, full-scale chemical control, precision irrigation, etc., to improve accurate monitoring of disasters and agronomic prevention and control level, reduce the synergistic harm of low temperature, salinity, disease and other adversity factors, cultivate strong seedlings, improve crop stress resistance, achieve uniform seedlings and strong seedlings, and lay a solid foundation for building a reasonable population and achieving the goal of “high yields in good years and guaranteed yields in disaster years”.
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