How to grow chestnuts

Hello, everyone, I think the steps of chestnut seedling raising are summarized as follows:

1. Preparation of nutrient soil: 40-50 parts of yellow core soil, 0/5-20 parts of carbonized chaff/kloc-0, 8- 10 part of humus soil and 5-8 parts of tung seed cake are mixed to prepare nutrient soil, and then 80% polygala tenuifolia wettable powder1000-

2, selecting a scion: selecting an annual fruiting mother branch with strong growth and full bud eyes as a scion with 2-3 complete buds, and then cutting the lower end of the scion into a wedge-shaped inclined plane with a grafting knife, wherein the wedge-shaped inclined plane is 2.5-3cm long;

3, selecting a bud stock: selecting a bud stock with strong growth, when the first true leaf is about to unfold and the second true leaf appears, cutting off the tender tip at the upper part of the cotyledon, and making a vertical straight cut between the two petioles, wherein the depth of the cut corresponds to the scion section;

4. Grafting: grafting the cutting surface of the scion onto the incision of the rootstock, binding and fixing the rootstock-spike joint from bottom to top with a film to obtain grafted seedlings, and then planting the grafted seedlings in a seedling bag;

5, seedling raise: putting that graf seedlings into a shading shed with a shading degree of 70-80%, wherein the temperature in the shed is control at 25-28 DEG C, and the humidity is controlled at 70-80%; After the grafted seedlings survive, remove the sprouts from the seedlings in time, open the two ends of the shade shed at night and cover them during the day; After 45 days, remove the binding film of grafted seedlings and spray 0. 1% urea or 0. 1% dipotassium hydrogen phosphate solution 1 time; After 60 days, the grafted seedlings were cultured in natural light.