What are the requirements of walnut seedling planting on land?

Walnut seedlings can not be planted in saline-alkali land and the planting zone with pH between PH6.2-8.2, nor can they be planted in areas with shallow water level, weathered sand and gravel areas, thin soil areas and Shishan areas with a height of less than 1 meter. It is suggested that the plots and land for planting walnut seedlings should have the following characteristics: areas with flat slope, leeward direction, long exposure to sunlight and the lowest temperature not lower than-20 ℃.

1. Land requirements for walnut seedling planting

The main results are as follows: 1. Walnut seedlings can not be planted in saline-alkali soil, and walnut seedlings can not be planted in the planting zone between PH6.2-8.2 and saline-alkali land, because it is easy to cause slow plant growth, disease and even death.

2. The suitable growth pH is between 6.2 and 8.3 (in the south, the pH is between 5.3 and 8.2). Too high soil salt content will affect the growth and development of walnut, and the salt content is less than 0.25%, which will not affect the growth, development and yield of walnut. If it has been planted in saline-alkali land, prevention work should be strengthened, for example, by digging drainage ditches, applying more organic fertilizer, improving the soil, and so on.

3. Walnut seedlings can not be planted in the land with shallow water level, such as the low-lying land next to Dahe Reservoir. Planting in this kind of land can easily cause walnut seedling root rot and fruit drop, etc., and serious walnut seedlings will cause plant death.

4. Walnut seedlings can not be planted in the following three areas: weathered sand and gravel areas, thinner soil areas, or Shishan areas with a height of less than 1 meter. The common characteristic of this kind of zone is that the water content is small, and the plant grows slowly after planting walnut seedlings, which will lead to low economic benefits, so it is necessary to improve the soil conditions when planting walnut seedlings.

5. Walnut seedlings should not be planted in the land where willow, poplar and locust trees have grown, because the plants planted in this land are prone to root rot, so they should be avoided as far as possible. for example, if walnut seedlings are planted in this area, the soil should be treated with pentachloronitrobenzene to prevent the disease.

Second, the most suitable land for planting walnut seedlings

The main results are as follows: 1. Walnut seedlings can not be planted in the planting zone between PH6.2-8.2 and saline-alkali land, and walnut seedlings can not be planted in the land with shallow water level, weathered sand and gravel area, thin soil area, or Shishan area with a height of less than 1 meter.

2. It is suggested that the land and land for planting walnut seedlings should have areas with flat slope, wind direction, long exposure to sunlight, maximum temperature not lower than-20 ℃, and appropriate increase of soil organic matter, which is beneficial to the growth of fruit trees.

3. Walnut belongs to deep root species, which has strong adaptability to soil, and the suitable pH for growth is between 6.2 and 8.3 (in the south, the pH is between 5.3 and 8.2).

4. Walnut seedlings can not be planted in saline-alkali soil, because high soil salt content will affect the growth and development of walnut, but if the salt content is less than 0.25%, it will not affect the growth, development and yield.

5. Some walnut seedlings have relatively low environmental requirements, such as Guanghe No. 1 walnut seedling and 8518 walnut seedling have been planted all over the country. It can also be cultivated in mountains, plains and rice fields.