Although it is already in its infancy, it is still raining or cooling in the vast area. This will be detrimental to growing crops. The most affected crops are winter wheat, greenhouse vegetables and some fruit trees. Here are some basic countermeasures: For winter wheat in the Yangtze River Valley, Hubei, Sichuan, Anhui, and Jiangsu, rain and snow are not conducive to the emergence of wheat fields. After the rain, they should pay close attention to drainage and loose soil, and adopt soil cultivation measures such as clearing the ditch, loosening soil, and removing the earthworms to achieve ventilation and lifting. For the purpose of warming, timely scratching to promote root development. For some fields with low temperature and high soil moisture, attention may be given to the spread of rust. It is necessary to prepare for prevention as soon as possible. Generally used basal and Miaofei plots, no need to apply wax fertilizer. Only farmland with less fertilizer and no nutrients at the bottom of the crop can be used in conjunction with tillage soil to topdress phosphorus and potash fertilizers and apply a little nitrogen fertilizer. The role of phosphorus and potash fertilizers is to promote hairy roots and improve the cold resistance of crops. If there are conditions, it is best to cover "warm ditch manure" to protect against freezing. Covering materials include rice bran, crushed straw, turfgrass, peat and other organic fertilizers. These materials can also be used for soil improvement after ploughing and ploughing into the soil. For the winter wheat fields in the north, it is mainly to take appropriate measures to prevent death. We must also pay special attention to the prevention of weak and small wheat seedlings in winter wheat varieties that are weak, and pay attention to wheat cultivation and water management as soon as possible. After the snow, wheat fields generally do not need watering and premature fertilization. The key measures for all types of wheat fields should be timely and timely conservation and cultivation. When dry and thin layers appear on the topsoil, timely repressive measures should be taken to prevent runaway wheat fields. The greenhouse vegetable crops and snow have a great impact on greenhouse vegetables. All the greenhouses that have been collapsed by the snow pressure have already made a foregone conclusion. For the management of uncompressed greenhouse vegetable land, the first step is to clear the snow from the top of the greenhouse and adopt proper ventilation. Insulation measures to prevent the growth of the vegetables after the snow even cloudy days; Second, we must control the water control of nitrogen, prevent cucumbers, tomatoes and other dishes of the leggy and weak seedlings. Therefore, the north should strengthen the production of protected land to make up for the damage to the production of vegetables in open areas. There are two steps that can be taken into account in orchard fruit trees. First, once the orchard is covered by heavy snow, the snow cover should be removed in time to prevent the pressure and pressure from breaking off the branches. At the same time, care must be taken not to subject the tree to secondary damage. Then use straw straw to wrap up the trunk and cover the tree to keep it warm; in the nursery, cover a large area of ​​grass and film. For late-maturing orchards that have not been harvested, timely clearing of snow and thin ice on the fruit area will be carried out to prevent fruit frostbite. Second, for the frozen fruit trees, after the snow temperature has risen steadily, moderate pruning is appropriate. Take small wounds, picking leaves, pruning, injury, sawing dry measures; on the branches intact, the blade did not dry, artificial defoliation as soon as possible; the obvious frostbite, dry, timely "bring with" trim. Cut the mouth to control the wound properly and apply wax liquid to protect it. For the frozen and dead fruit trees, they must be removed as soon as possible and new seedlings should be planted. In short, to strengthen the management of the snow after the consequences of the park, mainly soil, organic fertilizer, thermal insulation of the bundled tree.
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