One is to reinforce the shed. Strengthen the risk investigation of the facility shed, eliminate the hidden dangers found, strengthen the reinforcement and maintain the maintenance. Strengthen the wall and skeleton, and repair or replace the damaged shed film and insulation quilt in time. Do a good job in circuit inspection, shutter maintenance, heating facilities debugging, water supply system antifreeze and other maintenance work to ensure the normal operation of equipment.
Second, we must clear the snow and ice in time. In the process of snowing, we should strengthen the duty and inspection, so as to clear the snow in the next step, especially at night, to avoid the collapse of the shed due to too thick snow or freezing. In the process of snow and ice removal, attention should be paid to reminding the personal safety of workers inside and outside the shed.
Third, we must strengthen the insulation in the shed. Before the arrival of the cold wave and snowfall, guide farmers to close the air outlet in time, cover the insulation quilt at night, and cover the shed perimeter, back wall and shed foot with grass (curtain) to keep warm. If necessary, heating equipment can be used to cover the shed with multi-layer plastic film according to the actual situation to reduce heat loss. At the same time, pay attention to safety in production and prevent fire.
Fourth, we should strengthen production management. Guide farmers to do a good job in production management, uncover quilts in time on sunny days, and hang reflective curtains on the back wall or add supplementary lights to enhance illumination even on cloudy days. Try to avoid watering when it cools down and snows, so as not to lower the ground temperature. Spraying foliar fertilizer properly to supplement nutrients and reduce physiological obstacles of low temperature. Do a good job in ventilation, humidity reduction and disease prevention to ensure the stable supply of local vegetable products.
Fifth, we must strengthen dispatching. Strengthen vegetable production scheduling, guide vegetable farmers to plant varieties and stubbles reasonably, strengthen the service of production and marketing docking, and improve the pertinence, accuracy and effectiveness of production and marketing docking. Guide superior vegetable producing areas to strengthen cooperation with large and medium-sized cities, establish stable supply and marketing channels, support qualified large-scale agricultural products wholesale markets and fresh e-commerce enterprises to expand base direct mining, ensure market supply, and promote vegetable farmers' income.
Influence of cold wave weather on agricultural production
The low-temperature freezing injury caused by cold wave has different degrees of influence on agricultural production in various places. The cold wave will cause facility agriculture in Liaoning, Beijing-Tianjin-Hebei, Shandong, Jiangsu, Zhejiang and other places to suffer from different degrees of cold damage, wind and hail disasters. Some tea buds, cash fruit trees and local crops in the south are also vulnerable to cold damage, and rain and snow weather will also affect the harvest and transportation of vegetables.
At present, most winter wheat in the north is still in the wintering period, and the cooling weather has no obvious adverse effect on winter wheat in the north. Moreover, the rainy and snowy weather is conducive to increasing moisture and heat preservation in wheat fields, and also provides good moisture conditions for winter wheat to turn green. However, some wheat fields with vigorous growth and loose soil, especially some wheat that has returned to green and jointing, are in danger of freezing and damaging their leaves.
Low temperature will cause some tea buds and tropical fruit trees such as bananas, green dates, lotus seeds and loquats in the south to suffer from cold injury and freezing injury, and it is also easy to freeze winter wheat at jointing stage and rape at bolting stage. The heavy rainfall intensity in south-central Jiangnan and South China will lead to over-wet soil, and some low-lying areas may suffer from wet waterlogging.
Song Yingbo pointed out that the cold wave weather will lead to insufficient heat storage in agricultural greenhouses in protected areas, and the temperature will continue to drop, causing mild to severe low-temperature chilling damage to vegetables in protected areas, resulting in curled leaves, slow growth, young fruits falling off and abnormal fruits.
Strong winds can easily cause damage to unreinforced or damaged greenhouses. In addition, Beijing-Tianjin-Hebei, Shandong and other places have strong snowfall intensity, and solar greenhouses and plastic greenhouses in some areas are at risk of mild to moderate snowstorms.