Jiangsu can plant varieties such as "Jiujiazhong", "Chushuhong" and "Qingzha". It is advisable to choose sandy loam with loose soil and good drainage, and then harrow the soil to remove the residual stones, shrub roots and weeds in the soil.

165438+1From the beginning of October to February of the following year, select mature and full seeds for sowing. Disinfect the seeds before sowing, and then treat them with 500 mg/kg gibberellin 1 hour to accelerate germination. Then dig a planting hole with a depth of 10 cm in the center of the pit, sow 15 seeds in each hole, and cover it with soil and weeds.

Dig a 40 cm× 40 cm pit and plant 20 ~ 30 plants per mu with a row spacing of 5 ~ 7 meters. When planting, first put the roots of seedlings in into the pit, spread the roots evenly, straighten the seedlings, make fine soil enter the root gap, fill the soil and tamp it, and then water the roots.

Extended data:

For chestnut trees of different ages, the amount of nitrogen, phosphorus and potassium fertilizer is different, and it is applied three times a year: the first time is in mid-February, the second time is from early June to early July, and the third time is from the end of September to 10. Basic fertilizer can be applied deeply, and 0.5 kg oil cake or calcium superphosphate can be applied to each tree, and then weeding and soil covering can be carried out.

Loosening soil, expanding holes, weeding and building trees every winter can destroy the wintering place of pests, increase the content of soil organic matter and reduce the evaporation of soil water.

In February 65438 and the following year 10, after the trees stopped growing, the crown shape of chestnut was pruned, and the overgrown skills, pests and diseases, dead branches and excessive main branches were cut off. When the seedling branches are stretched to 20-30 cm long, the core is removed for the first time to remove the tender parts at the tips of the branches.