Rape suffers from ice and snow management techniques

Drain the drains and put the roots down. Icing after snowfall can easily cause the collapse of field ridges and blockage of ditches. After clearing snow, clean up the three ridges in the field with clear weather, drain the sewers in time, reduce the humidity in the field, and deepen the trenches outside the field to prevent the occurrence of waterlogging. After the thawing, the soil in the ditch can be used to root the roots. In particular, it is necessary to pay attention to the roots of roots in order to reduce the damage caused by freezing damage to the root system.

Remove frozen moss and clear frozen leaves. For frozen moss-free rapeseed, it should be removed on sunny days in order to promote the growth of the base part and compensate for the damage caused by freezing. Avoid rainy days so as not to cause wound rot. It is necessary to timely remove frostbite leaves with obvious water-stained shape, prevent frostbite from involving the entire plant, and promptly remove the leaves that are significantly whitened or dried.

Apply top dressing and spray boron fertilizer. After the rape is frozen, the leaves and roots are damaged, and nutrients must be added in time. After picking the moss, it is appropriate to apply fertilizer according to the situation. Apply 5-7 kg of urea per acre to promote branch growth. Leaves of frozen rape, to generally top-dressing, topdressing 3-5 kg ​​of urea per acre, the poor growth of the field can be increased by the appropriate amount, so that as soon as possible to restore growth. Based on topdressing nitrogenous fertilizers, appropriate potassium fertilizer should be applied, potassium chloride 3-4 kg/mu, or potassium dihydrogen phosphate 1-2 kg should be applied outside the root to increase cytoplasmic concentration and enhance cold resistance of plants. Promote grouting strong seeds. In addition, spray 0.1-0.2% boron fertilizer solution for about 50 kilograms per acre to promote flower bud differentiation.

Strengthen forecasting and prevent diseases. After being frozen, rapeseed is more susceptible to disease than normal rapeseeds. It is necessary to strengthen the forecast and forecast of rapeseed pests and diseases and pay close attention to the occurrence and development of rapeseed. For sclerotinia-producing fields, carbendazim, thiophanate-methyl, and mancozeb, etc. should be promptly sprayed for prevention and treatment; Spray control.

Field coverage, increase the temperature. After the snow melts, where conditions permit, it is possible to apply ash or husks in the rape field to cover the appropriate amount of straw or livestock manure to protect against freezing and to provide nutrients to the rape after spring.

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