NOVELTY - Improving cold resistance and wintering ability of a turf comprises preparing a composting leaching liquor by adding deionized water to trash compost, soaking for 24-48 hours, filtering, and refrigerating at 4 degrees C; culturing a lawn plant by seeding 25-30 plants, supplying the composting leaching liquor, uniformly feeding water, and carrying out experiment in a greenhouse at 20-26 degrees C and at a relative humidity of 40-70%; cold exercising and sampling by placing the test material in an illumination culture tank at 10 degrees C; and cutting the plants, storing at - 4 to - 10 degrees C, and transplanting.    USE - Method for improving cold resistance and wintering ability of a turf (claimed).    DETAILED DESCRIPTION - Improving cold resistance and wintering ability of a turf comprises:    (A) preparing a composting leaching liquor by adding deionized water to trash compost, agitating, soaking for 24-48 hours, filtering, placing the leaching liquor in a brown bottle, and refrigerating at 4 degrees C, where the weight volume ratio of the trash compost to deionized water is 1:2-4;    (B) culturing a lawn plant by uniformly seeding 25-30 plants of a collected plant pot culture in each pot, where the height of the soil matrix is 10-15 cm, after one week, cutting the plants, after growing the plants to the time of three leaves and one flower hearth, supplying the composting leaching liquor, uniformly feeding water every day, frequently exchanging the positions of all culture dishes to guarantee the consistent illumination, and carrying out experiment on a plant culture table in a greenhouse at 20-26 degrees C and at a relative humidity of 40-70%, where the illumination is the natural light penetrating in the room;    (C) cold exercising and sampling by placing the test material in an illumination culture tank at 10 degrees C in 30th day to process, where there are two treatment groups comprising a first group processing at low temperature of 2-10 degrees C for 24 hours in every gradient, simulating the cold exercise under illumination, and processing for a total of 7 days; and a second group taking room temperature of 20-26 degrees C as reference, watering a leaching liquor every 5 days, and measuring the indexes of the lawn plant, after over-wintering and reviving, measuring the plant height, finishing the process from culture to experiment, where the whole experiment is carried out for 80-85 days; and    (D) cutting the plants, placing in a paper box, storing at the average temperature of - 4 to - 10 degrees C, transplanting the plants to a field when reviving in spring, and observing the growth condition.