What are the main points of planting Chinese chestnut in summer? How to apply fertilizer skillfully?

Autumn is a good time to eat Chinese chestnut, which is rich in nutritional value and medicinal value. At home, Chinese chestnut is called "king of dried fruit", while abroad, it is called "ginseng fruit". Chinese chestnut is usually planted in spring or autumn, of course, it can also be planted in summer, but the key points of management are more. What are the main points of planting Chinese chestnut in summer? How to apply fertilizer skillfully?

What are the main points of planting Chinese chestnut in summer?

1. Garden selection: chestnut orchard should choose sandy loam with low groundwater level and good drainage. Avoid saline-alkali soil, low humidity is easy to waterlogging, windy places to plant. In order to open up the millet garden in the hilly land, we should choose the area near the mountain with gentle terrain and thick soil layer, and then we can gradually expand and develop to the area with poor conditions.

two。 Variety selection: variety selection should be mainly based on the excellent varieties selected locally, such as Paoche No. 2, Chenguo No. 1, etc., and properly introduce Shifeng, Jinfeng, Haifeng, Qingmao soft thorn, Jushuhong and other varieties. According to different edible requirements, fried chestnut varieties should be given priority to, and excellent Chinese chestnut varieties should be properly developed, taking into account not only the export of foreign trade, but also the needs of the domestic market. At the same time to achieve a reasonable mix of early, middle and late varieties.

3. Pollination tree configuration: chestnut mainly rely on the wind to spread pollen, but because chestnut has heteroecious male and female flowers and self-fruiting, a single variety often produces empty buds due to poor pollination. So the newly built chestnut orchard must prepare 10% pollination trees.

4. Reasonable close planting: reasonable close planting is the basic measure to increase the yield per unit area. It is suitable to have 30-40 plants per mu in plain chestnut orchard and 40-60 plants per mu in mountain chestnut orchard. It is planned that 60-111 trees can be planted in dense planting chestnut orchard per mu, and then thinning will be carried out step by step.

Second, how to apply fertilizer skillfully in summer?

Summer is the exuberant period of flowering, fruiting and branch growth of Chinese chestnut, and it is also the first peak of root growth of chestnut, and the nutrient consumption in the tree is large. If there is no sufficient nutrition, especially the lack of boron fertilizer, it will affect the normal growth of chestnut, resulting in an increase in the number of empty bracts, low yield and poor quality of chestnut.

For the chestnut orchard with thin soil and serious lack of fertilizer, the effect of soil fertilizer application is better. The method is to dig a circular ring trench in the crown dripping line of chestnut trees, with a width of 25 cm and a depth of 20 cm. Each plant is applied with calcium superphosphate 1 kg, urea 0.3 kg, borax 0.25 kg 0.5 kg. Urea and borax should be dissolved in water and then ditched, sprinkle water while fertilizing, and mix fertilizer with soil with a hoe, so that fertilizer and water can infiltrate into the root and be absorbed by the root system as soon as possible. Return to the soil to fill the ditch in time after fertilization to prevent the volatilization of nutrients. If an appropriate amount of soil miscellaneous fertilizer is added to fertilize the soil, it will have a good effect on more fruit and reducing the empty bract rate of Chinese chestnut in the coming year.

On the basis of soil fertilization, extra-root fertilization was carried out at the right time. This can make the high yield of Chinese chestnut in that year and the high yield of Chinese chestnut in the coming year.

The method of foliar spraying of chestnut in summer: mix 0.3%-0.4% urea, 0.3%-0.4% potassium dihydrogen phosphate and 0.3%-0.4% borax, spray the crown at 9: 00 a.m. or evening on a sunny day, spray once every 10 days, and spray twice in a row. If you encounter heavy rain within 10 hours after fertilizer spraying, you should re-spray once to ensure the effect of fertilization.