Planting and Management of dormant period of Winter Jujube

In November, winter jujube trees entered a dormant period, which is a favorable period for winter jujube planting. This month, the main work is the application of basic fertilizer, tree protection and new garden construction.

First, the application of base fertilizer: at this time, the application of base fertilizer will result in high soil temperature, high soil moisture and rapid decomposition of fertilizer, which is beneficial to root absorption. The method of ditch application can be adopted, each tree can apply 25 kilograms of rotten soil fertilizer, while applying soil fertilizer, each tree can be mixed with 2 kilograms of superphosphate.

Second, whitening: 10 parts of quicklime, 1 part of salt, 50 parts of water and 5 parts of stone-sulfur mixture can be mixed evenly and then smear the trunk.

Third, the establishment of the garden: 1. garden selection, winter jujube is a light-loving perennial fruit tree with shallow roots, early fruiting, long life, no strict requirements for soil, drought, waterlogging and saline-alkali tolerance, and can grow in soil with a pm value of 5.5 to 8.5. However, for the new garden, we should try our best to meet the needs of tree growth and development, so we should choose the land with flat terrain, sufficient light, fertile soil, good drainage and irrigation and no pollution. 2. The suitable planting time for autumn planting is after the seedlings have fallen leaves and before the soil is frozen. 3. Planting density, the row spacing of 2 × 3 m, 3 × 4 m and 3 × 7 m are commonly used in production. According to the light-loving characteristics of winter jujube and the principle of rational use of land, the two densities of 2 × 3 m and 3 × 4 m are ideal.

Fourth, planting mode: generally single-row planting, multi-use rectangle, row spacing is greater than plant spacing, the row direction should be north-south.

Fifth, planting techniques: 1, seedling selection and treatment, Jiandong jujube dense planting garden should choose strong seedlings with a height of more than 1.2 meters, a dry diameter of more than 1 cm, complete root system, pure varieties, good healing of grafted parts and no diseases and insect pests. The seedlings had better be planted along with the seedlings. The seedlings transported from other places were soaked in clean water for 10 to 20 hours, and the roots were repaired before planting. In order to improve the survival rate, rooting powder can be used to spray roots. the specific method is to dissolve rooting powder No. 3 with a small amount of alcohol, then spray roots with 10 kilograms of water per gram, and then cover it with wet straw mats for 2 hours before planting. 2. The main points of planting: dig planting holes with length, width and depth of 0.8mm each. The topsoil should be separated from the new soil. Each planting hole should be mixed with 25kg farm manure and topsoil, and then filled into the hole. The planting depth should be that the root neck of the seedling is slightly higher than the ground, and after irrigation, the root neck is the same as the ground level.

Water once after planting.

Sixth, post-planting management: 1, seedlings against cold, seedlings planted in autumn, in order to ensure their safety over the winter, seedlings should be protected against cold. Specific methods: (1), besmear white, tie straw handle, immediately after planting white, tie straw handle. Whitening agent configuration method: 18 kg water + 2.5 kg salt + 0.1 kg vegetable oil + 0.05 kg starch + 0.75 kg sulfur powder. (2) cultivate the soil to prevent the cold, cultivate a 30-centimeter mound at the base of the seedling to prevent the cold, and then flatten it for 2 to 3 times after thawing in the spring of the following year.