Is Huangshan Koelreuteria paniculata deciduous or evergreen?

The scientific name of Huangshan Koelreuteria paniculata, which is distributed in Guangdong, Guangxi, Jiangxi, Hunan, Hubei, Jiangsu, Zhejiang, Anhui, Guizhou and other provinces and regions. Grow in hills, villages or sparse forests in mountains between 600 and 900 meters above sea level. So, is Huangshan Koelreuteria paniculata deciduous or evergreen?

Is the Huangshan Koelreuteria paniculata deciduous or evergreen?

Koelreuteria huangshanensis is a deciduous tree with verrucous spots on branches up to 20 meters high, with spreading leaves, bipinnately compound leaves, leaflets usually entire, sometimes serrated on one side near the top edge. Its tree shape is correct, branches and leaves are dense and beautiful, it is a good tree species for greening and beautification in three seasons.

2. Cultivation techniques

1. Seedlings: choose plants that are vigorous, robust, disease-free and upright. The larger seedlings should be marked on the sunny side of the trunk to prevent transplanting, causing burns or bursting of the trunk and affecting the survival rate.

2. Planting: the soil layer of Koelreuteria paniculata is deep and slightly acidic, so the author adopts the method of changing soil with a large hole. Take the full-leaf Koelreuteria paniculata with a height of 1 meter to 2 meters as an example, the hole is 1 meter long, 1 meter wide and 1 meter deep. After digging the hole, fill 30 cm thick slag to make a seepage layer, and spread a layer of grass on the slag to prevent the upper half of the soil from flowing into the slag crevice due to watering. Fill the tree hole with the prepared planting soil, mixed with humic acid fertilizer, mature organic fertilizer and saline-alkali soil improvement fertilizer, and tamp it to a depth of 50 cm from the ground. After that, fill the planting soil into the tree hole and tamp it to 45 cm from the ground, so that the broken root will not be in direct contact with the fertile soil and is not easy to produce rotten roots. Then, put the Huangshan mound gently into the tree hole, the sunny side to the south, and then fill it with mixed soil.

3. Water and fertilizer: after the whole leaf Koelreuteria paniculata transplanting, the root water should be fixed in time for the first time, and it should be fully watered and watered thoroughly, so that the root system can fully contact with the soil and be beneficial to survival. The first watering must surround the big pit and pour through the water. The dissolved 10 grams of rooting agent can be poured into the tree hole with the water to promote the growth of new roots. After 7 to 10 days, water the second time. Water for the third time in about 20 days. In the future, according to the situation, timely watering. During the growing period, thin fecal water can be applied once or twice to make the leaves green and flowers multiply and enhance the disease resistance of the plant.

4. Protection: the trunk of the branch is easy to be burned by the scorching sun in summer, so that the skin burst and decayed, resulting in serious damage. For the newly planted Koelreuteria paniculata, it can be treated with white coating after transplanting, and it can also be dried with grass rope for about 2 meters to reduce water evaporation. After planting, a bracket should be set up to fix the tree trunk to prevent shaking. If there is no bracket, the root system can not be closely connected with the soil, and the root system is very easy to lose water, which affects the survival. Soft material spacer is used at the fixed place to prevent the dry skin from being damaged.

5. Cold protection: after the beginning of winter, newly planted trees should be protected against cold. The way is to build a strong wind barrier and leave an opening in the south to the sun to be exposed to the sun. In addition, cover the ground with a layer of straw to prevent the roots from freezing. Not only the newly transplanted whole-leaf Koelreuteria paniculata in North China should be protected against cold, but also the trunk should be protected from cold every year after survival. the method is to use grass rope to wind all the way from the root to the branching point. only in this way can the survival rate of trees be ensured.

6. Pruning: the crown of Koelreuteria paniculata is correct, and its natural tree shape is often used in gardens. The newly planted tree retains 3 to 5 main branches evenly distributed, truncated 25 cm to 40 cm, and each main branch retains two or three lateral branches. Cut off dead, diseased or overdense branches at any time during maintenance.