What kind of tree is the "king of dried fruit" chestnut? Where is it suitable for planting? What kind of fertilizer should I apply? What are the methods?

Chinese chestnut, known as "king of dried fruit", is also known as "ginseng fruit" abroad. The unsaturated fatty acids contained in chestnuts have anti-atherosclerotic effects. So, what kind of tree is the chestnut tree? Where is it suitable for planting? What kind of fertilizer should I apply? What are the methods?

What kind of tree is the chestnut tree?

Chinese chestnut is a kind of light-loving tree species, which is taboo of shade. In the valleys where the light is less than six hours a day, the crown grows erect, the leaves are thin and the branches are thin, and the yield is low. During the flowering and fruiting period, insufficient light will cause physiological fruit drop. Such as long-term excessive shade, it will make the inner chamber branches yellow, thin, weak, and even withered. Therefore, it is appropriate to plant chestnut trees on sunny slopes or open valleys. In order to enhance the light, the backbone branches of the crown should be sparse in order to facilitate the inner bore fruit.

Second, where is the chestnut tree suitable for planting?

The management of Chinese chestnut is more labor-saving than fruit, and it is convenient for soil and water conservation, and hillsides with a slope of less than 45 degrees can be used. Because of the thick soil layer of the alluvial fan in the hillside and the valley, Chinese chestnut is generally cultivated in the downhill alluvial fan or valley. Chestnut trees should be planted on the slope. although the soil layer on the downhill is thick, it is easy to accumulate water, so attention should be paid to drainage. Although the uphill soil layer is thin, the alluvial soil mixed with gravel in the deep soil layer, the root system of the chestnut tree can expand into the soil layer along the stone gap, and the chestnut tree can grow normally. If we can transform the thin soil layer, that is, dig a big hole before planting, apply good soil, or strengthen the soil improvement and management of chestnut orchard during the growth period, the effect will be better.

Third, what kind of fertilizer should be applied to chestnut trees? What are the methods?

1. Base fertilizer is the basic fertilizer for the growth and development of chestnut throughout the year, which can enhance the photosynthetic efficiency of leaves, help to restore tree potential, accumulate more nutrients, and lay the foundation for high yield in the coming year. Generally, after fruit harvest in autumn, combined with deep ploughing to improve the soil, it is mainly organic fertilizer. For trees with moderate potential, medium fertility and more fruit, about 2000 kg of rotten farm manure and 1.0-1.5kg of sulfur-based compound fertilizer are applied per mu.

two。 The main methods of fertilization are as follows:

The radial trench of ① is centered on the trunk, and 4-6 radial trenches are dug equidistantly at the edge of the crown, with a width of 30-40 cm. The length of the trench depends on the size of the crown. Generally, the length of the trench is 2 in the crown and 2 outside the crown. The depth of the groove is about 30 cm, and the depth should be deepened gradually from inside to outside.

② annular groove is applied to dig a 40-50 cm wide and 50 cm deep annular groove 20-30 cm outside the crown and apply fertilizer. This method is suitable for young trees with small crown.

The ③ strip trench is applied to the opposite sides of the crown, which is 50 cm deep and 40 cm wide, depending on the size of the crown, and fertilized.

3. Reasonable topdressing

Pre-anthesis fertilizer: generally for the first time before and after sprouting, nitrogen fertilizer is the main fertilizer, and high nitrogen compound fertilizer 0.3-0.5 kg / plant can be applied to promote leaf sprouting, flowering and fruiting, and increase fruit setting rate and yield.

Strong fruit fertilizer: in the early stage of fruit expansion after anthesis, the application of high potassium compound fertilizer 0.5-1 kg / plant can promote fruit expansion, improve yield and fruit quality.

During the growing period from May to July, pesticide should be sprayed in combination with pest control, mixed spraying of manganese and magnesium should be added, and micro-fertilizer should be supplemented. In order to prolong the functional period of leaves, increase the single grain weight of nuts and increase the accumulation of nutrients in fruits, so as to improve the commercial value of fruits.