In winter, the temperature is low, and many wintering medicinal plants will be affected by freezing damage. Failure to take relevant measures in time will affect the growth and yield of the following year. Here are a few simple ways to freeze medicines. Cultivated earthworms are combined with cultivators and clear trenches in the winter to cultivate earthworms, that is, in the roots of the plants, the drier soil (40 to 60 cm in height) is used to increase the depth of the root system, thus reducing or avoiding freezing and thawing. Root damage. The trunk brushed and brushed white trunks and used white light to reflect light, reducing the temperature difference between the day and night of the tree and avoiding frost damage to the trunk. Whitening agent formula for whitening: lime 1.5 kg, salt 0.2 kg, sulfur powder 0.3 kg, a little grease (the role is to avoid rain), 5 kg of water, can be mixed into a paste solution. Covering the bundle covers straw and thatch straws between medicinal plants. Herbal seedlings should be covered with a layer of grass ash, and then protected by plastic film sheds. For seedlings of woody herbs, the entire tree can be bundled with rice straw or wheat straw, and the soil is compacted and pressed at the trunk near the ground. Wet objects are smoked on the frosty night or early morning, wet weeds, leaves, sawdust, and chaff are piled up in the upwind position of the medicine field and ignited. Generally, 8 to 10 cigarettes should be discharged per acre. Smoke stacks must be ignited when the outside temperature is 1°C~2°C lower than the temperature of the crop victim, and smoke should be stopped when the temperature rises above the crop damage temperature. Re-applied wax fertilizer Before the soil was frozen, apply 1500~2000 kg of soil miscellaneous fertilizer per mu to plant rows of herbs.
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