In winter, the temperature is low, and many wintering medicinal plants are subject to freezing damage. If no relevant measures are taken in time, it will affect the growth and output in the coming year. 1, earthworms. In combination with cultivators and clear trenches in the winter, the roots of the plants can be cultured on dry soil (40-60 cm thick for tree mulching) to increase the depth of the root system, thus reducing or avoiding the damage to the root system caused by freezing damage. 2, cover straw. For antifreeze herb seedlings, it should be covered with a layer of vegetation ash, and then protected by plastic film sheds. For young seedlings of woody herbs, the entire tree can be bundled with straw or wheat straw, and soil is compacted and pressed at the trunk near the ground. 3, wet material smoked. On wet nights or early mornings, use wet weeds, leaves, sawdust, and husks, etc., and stack up in the medicine field at an equal distance (usually 8 to 10 cigarettes should be discharged per acre in the pharmacy). . The smoke formed when it is ignited can alleviate the decrease of temperature, and has a significant effect on freezing prevention. It should be noted that the smoke should be ignited when the outside temperature is 1-2 degrees Celsius lower than the temperature of the crop victim and stopped when the temperature rises above the victim's temperature. 4, re-applied wax fertilizer. Before thawing, 1500-2000 kilograms of soil miscellaneous fertilizer etc. are used per acre. Between the rows of potash medicinal plants, not only can the ground temperature be raised, but also the effect of freezing and warming can be maintained. At the same time, it can also serve as a spring fertilizer for winter to increase soil fertility. China Agricultural Network Editor
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