Methods of sowing and Seedling raising and Seedling Management of seed Plum

Methods of sowing seedlings and seedling management of plums:

First, the nursery should choose the nursery where the topography is relatively flat, and the soil should be loose and fertile. Pour water and turn deeply before winter. In late March, the soil was prepared and covered with plastic film. The plastic film had better be laid in the north-south direction to facilitate the seedlings to receive light evenly. Plastic film is required to be paved and covered strictly. 2 to 3 days before sowing, the stratified seeds are placed in the greenhouse or indoor for germination, and the germinated seeds are picked out for sowing.

Second, sowing uses artificial piercing holes in the plastic film. It is required that the plant spacing is 3 to 5 cm, the hole depth is 2 to 4 cm, the aperture is 5 cm, the row spacing is wide and narrow, the narrow row is 30 cm, and the wide row is 60 to 70 cm. Sowing is to sow the germinated seeds in the hole, 1 or 2 seeds in the hole. Cover the seeds with 2 cm thick wet fine soil and seal the hole tightly. In order to ensure the quality of sowing and the neatness of seedling emergence, the seeds are not germinated and not sown. Sowing should be carried out before the first ten days of April. The weather is fine after sowing. 4 to 5 days after sowing, the seedlings will be covered with plastic film, and in 7 to 10 days, all the seedlings can be released. Check the seedlings every day when they emerge and release the top soil seedlings in time to prevent them from bending in the plastic film or being scalded.

Third, seedling management rootstock seedling early management is extremely important, to promote the early growth of rootstock seedlings in addition to plastic film mulching, but also to carry out extra-root topdressing, when the rootstock seedlings grow to 5 to 8 cm, use 0.5% potassium dihydrogen phosphate plus 0.2% urea foliar spray 6 external topdressing 2 to 3 times, each time about 20 days apart. When the rootstock grows to 20 cm in early June, all the rootstocks are coring to promote root splitting and thickening growth.