The invention relates to a method for rejuvenating and culturing seedlings of sianchau, which comprises the following steps: 1, culturing a mother
plant of the sianchau, namely culturing a sinachau
plant which is robust without
insect disease in a vigorous growth period of the sianchau; and 2, culturing the seedlings by
cutting, namely from February to April of the next year, selecting good mother plants, shearing
cutting wood, performing
slurry dipping treatment on base parts of the
cutting wood, arranging the cutting wood in a dug channel on a sianchau culturing field, covering soil to makethe length of the cutting wood exposed out of the ground half to one fourth of the total length, watering rooting water thoroughly, covering a thin film and a sunshade net to keep the soil moist, after 9 to 12 days, removing the thin film and the sunshade net, thinly watering 0.1 to 0.5 percent
aqueous solution of
ammonium carbonate to strengthen the seedlings, and after 15 to 25 days, digging the seedlings with the soil and
transplanting the seedlings to a planting field. The method ensures that the seedlings of the sianchau have
high survival rate, good quality, consistent growth in the field at a later stage, low
disease rate, high yield and convenient to manage, and can greatly reduce cost, labor force investment and consumption of agricultural chemicals, and improve product quality.