The planting and management of Sophora japonica (Robinia pseudoacacia) is in urgent need. I hope you can help me a lot.

native to the eastern United States, it is also called Robinia pseudoacacia, which belongs to the family Papilionaceae. Robinia pseudoacacia has strong sprouting, rapid growth, well-developed root system, nodules, drought resistance, smoke resistance, salt and alkali resistance, sand burial resistance and high temperature resistance of topsoil. It is an excellent tree species for soil and water conservation, soil improvement, wind and sand fixation and "four sides" greening in North China and Northwest China, and is well received by the masses. It is an excellent fast-growing tree species for managing timber forest and firewood forest in the dry valley area of Bailong River. In the dry valley area of Bailong River, the climate is dry, the rainfall is low, the winter and spring are dry, and the temperature difference between day and night is large. Bare-rooted seedlings are basically used for local afforestation, and the survival rate of afforestation is low. In 2, the survival rate of afforestation with container seedlings can reach over 95%, which has achieved good results. ?

1 seed treatment and sowing? 1.1 seed treatment?

(1) The seed coat of soaked Robinia pseudoacacia is thick and hard, and the water permeability is poor. In order to improve the germination rate, shorten the germination period and make the seedlings emerge orderly, seed treatment must be carried out before sowing. Pour hot water of about 55℃ into the container containing seeds, stir while pouring until it is not hot, soak for one night, and take out the expanded seeds with a sieve. The remaining unexpanded hard seeds are treated with water at about 85℃ for 1 ~ 2 times until most of them swell. If there are hard seeds that are difficult to swell, they can be wrapped in gauze and put in boiling water for 1 s, lifted quickly, and then soaked in cold water for one night. ? (2) Accelerating germination In order to make the seeds germinate evenly and emerge quickly, the germination should be accelerated before sowing. Put the swollen seeds in a bamboo basket, cover them with a wet towel or a wet cloth, place them in a sunny or warm place, and wash them with clear water twice a day for about 5 days. When one third of the seeds are cracked and white, they can be sown. ?

1.2 sowing? (1) The sowing time is generally in March, when the temperature is low, which is conducive to seed germination. ?

(2) Seeding method Before sowing, the containers filled with nutrient soil are drenched with water to make the soil sink. Some containers contain a lot of nutrient soil, and a hole is punched with a stick, and the germinated seeds are planted in the containers, and 3 seeds are planted in each container. Then spread the fine cotton sand evenly on the container and cover it with soil so that the seeds can't be seen. ?

2 seedling management? Sowing depends on the weather, and it is usually watered once every 3 days to ensure the emergence of seedlings. With the different growth stages of seedlings, the watering amount is also different. One month after the seedlings are unearthed, they can be replanted and thinned. Generally, the seedlings are thinned after replanting, and one plant is kept in each container. Weeding should be done in time to avoid affecting the growth of seedlings. Spraying 1% ~ 2% ferrous sulfate solution to control damping-off every 1 days after the seedlings come out, and spraying 4% dimethoate? .5%? Control aphids with its solution. ?

3 afforestation? (1) The best afforestation season is in early March, and the leaves have not yet begun to sprout, and should not exceed April at the latest. It should be planted on a cloudy day after light rain or rain. ? (2) Afforestation density The afforestation density of Robinia pseudoacacia is slightly higher than that of other broad-leaved tree species, because Robinia pseudoacacia has many branches, curved trunk, and properly increased initial planting density can promote tree height growth and cultivate excellent trunk shape. Plant spacing is generally 2 m×1 m, every 667 m? It is advisable to plant 33 plants. ? (3) Soil Preparation and Digging Under the adverse soil climate conditions in the arid valley area, a reasonable soil preparation method is an important technical measure to improve the water, fertilizer, gas and heat conditions of the soil, make full use of precipitation, reduce soil moisture evaporation, improve the survival rate and preservation rate of seedlings, and promote the growth of seedlings. Generally, the soil preparation effect is better from the end of rainy season to March of the following year. During this period, the soil layer is humid, the air temperature is not high, and it is easy to prepare soil. At the same time, the physical and chemical properties of soil can be improved after several months of sun baking. Soil preparation can be divided into three methods: full reclamation, strip and block. According to the production practice, the local soil preparation is made by fish scale pit, which is generally 1 ~ 1.5 m long, .5 ~ 1 m wide and more than 3 cm deep. Dig a semicircle pit with the same height as Hengshan Mountain on the hillside. First, put the topsoil aside, and then cultivate the raw soil under it by cutting the outer cushion, and form a semicircle earth-rock stalk. After the earth ridge is surrounded, fill the excavated topsoil into into the pit, and the pit surface is horizontal or slightly inclined inward. ? (4) When planting, carefully tear off the plastic film bag and put it straight. When planting the soil, it should be pressed laterally from all sides to prevent the container seedlings from being pressed vertically to prevent the matrix in the container seedlings from being scattered. After watering, cover the mulch film, cut a gap of 7 ~ 1 cm in the middle of the mulch film to make the seedlings go straight into the hole through the gap, and cover the mulch film with a layer of soil about 2 cm thick after planting to avoid the mulch film being blown away and scratched by the wind. In the process of planting seedlings with plastic film, the plastic film should form a pot bottom shape in the planting hole, which is convenient for water to flow into the soil near the roots of seedlings. ? 4 tending management? After Robinia pseudoacacia is planted, it is necessary to strengthen the management of young forests. As the saying goes, "three points are made and seven points are in charge". After planting, we should do a good job in expanding holes, cultivating soil, smearing buds and pruning in time, once or twice a year. If the young forest is bent or grows poorly, it can be leveled in early spring to regenerate sprouting strips, and then select the strong one from the sprouting strips to keep one.

that's all I found. I need to buy books if I want to be detailed.

Title: How to plant Sophora japonica

Author: Li Ting edited

ISBN:

Price: CNY.8

Place of publication: Beijing

Publishing House: China Forestry Publishing House

Date of publication: 1956

Pages: 15 pages

Format:.