The demonstration area is located in Liu Zhuang, Liujiazhuang and the west of Xibaishan, Ciyu Town, Lingshou County, with a demonstration area of 1 10,000 mu. The eco-geological background in this area is very representative, and the rock types are relatively simple, mainly biotite adamellite. The protolith is the metamorphic product of granite, and gneiss structure is developed. The altitude is 200 ~ 250 m, and the slope is gentle, mostly below 10. The slope direction is mainly sunny slope. Hydrothermal conditions are mainly in middle-low temperature and semi-arid areas, and a few are in middle-high temperature and arid areas. Soil types are mainly calcareous cinnamon soil and acidic coarse bone soil. The most striking feature of geochemical background in this area is the enrichment of phosphorus, strontium, selenium and molybdenum. The phosphorus content is (1000 ~1388 )×10-6, the strontium concentration is as high as (200 ~ 250) × 10-6, and the selenium content is as high as (0.1~ 0.38). The contents of copper, zinc, manganese, iron and boron are relatively stable, which are 25× 10-6, (63 ~ 80 )× 10-6, 630× 10-6, 5.6% ~ 6.0% and 50× respectively.
2. Comprehensive technology development plan
According to the eco-geological background conditions in this area, especially the selenium enrichment in this area, it is beneficial to the development of selenium-rich products. Geomorphologically, it belongs to the hilly area with low slope, mainly developing fruit and cash crops. Apricot plain is produced in Zhuolu County, Hebei Province. It is a kind of almond tree with strong adaptability. Cold-tolerant, drought-tolerant and barren-tolerant, it is an excellent light-loving green variety. According to the local eco-geological conditions, it is very suitable for apricot growth and a good tree species for greening and soil and water conservation, with a demonstration area of 3000 mu; Walnut is the dominant tree species in this area, with a demonstration area of 3000 mu; This area is a suitable scale development area for high-quality and high-yield jujube trees, which was planted less in the past. This demonstration area is 3000 mu, which promotes the large-scale development of this area. The original rock on the hillside in this area is granite, and the soil pH value is acidic, which is suitable for chestnut growth, but the content of manganese and boron is not high, so more manganese and boron fertilizer should be applied, and the demonstration area is 1000 mu.
3. Comprehensive demonstration project measures
Because the rock type in this area is relatively single and the slope is relatively small, it is suitable for transforming terraced fields or strip fields, and the specific scale can be determined according to the terrain.
4. Example effect
1) has remarkable economic benefits. It has been five years since 1999 began planting demonstration, and it has been five years since 2003. According to the field investigation, the income per mu of chestnut can reach 1500 yuan, the income per mu of walnut is 2,500 yuan, and the income per mu of apricot is 3,000 yuan. Only in the demonstration area, the annual income is increased by180,000 yuan, and the economic income is higher in the full fruit period.
2) Through the demonstration of this project, farmers and agricultural technicians have initially mastered the local ecological geological background and how to carry out scientific development according to the local ecological geological conditions, which has reduced the past practice of blind and hasty development and played a great role in demonstrating and driving. Under the demonstration of this area, other towns and villages in Lingshou County have also carried out large-scale development, such as Wangjiagou Village and Xibaishan, and carried out comprehensive technology development according to local ecological and geological conditions. Wangjiagou Village alone has now developed 3,000 mu, and the development types are walnuts, chestnuts, peaches and grapes.
3) The ecological environment in this area has been significantly improved, especially in Xingping, which not only has high economic benefits, but also has an open crown and developed roots, which is beneficial to soil and water conservation.