When is the chestnut usually planted? How to fertilize in order to achieve high yield?

Chinese chestnut is one of the earliest edible nuts in China, which is rich in high nutritional value. It tastes sweet and crisp when eaten raw. If it is cooked, it tastes soft, waxy and fragrant, and it is deeply welcomed by consumers. Chinese chestnut produced in China is of high quality and is deeply loved by people at home and abroad. The requirement of Chinese chestnut for planting environment is not very high, so when will Chinese chestnut be planted? How to fertilize in order to achieve high yield?

When will Chinese chestnut be planted?

Chestnut trees can be sown in autumn and spring, and most of them are sown in late autumn and early winter. The advantage of autumn sowing is that chestnut seeds do not need to be stored in sand and can be treated slightly after seed collection. However, because chestnut is sown in autumn for a long time in the field, it is vulnerable to external climate and other damage, affecting the emergence rate. Spring sowing requires more than 30% of the seeds to sprout, or in the first and middle of March every year.

Second, how to fertilize Chinese chestnut in order to achieve high yield?

1. Meet the base fertilizer

Base fertilizer accounts for about 60% of the amount of fertilizer applied in the whole year, which can restore the consumption after the fruit of previous years and restore the tree potential. Generally, nutrients should be established every year, and after the fruit is harvested in autumn, it can be combined with cultivated land, which can improve the soil structure and help the root system to grow. About 4,000 jin of farm manure and compost are used per mu. A tree uses 1 jin to 1.5 jin of compound fertilizer.

2. Topdressing stage

Topdressing once before flowering and after sprouting, mainly using nitrogen fertilizer, one plant uses high nitrogen compound fertilizer 0.6 to 1 jin. Mainly to promote shoots, more flowering, can set more fruit. The second topdressing is the fruit expansion period, mainly one jin to two jin of high potassium compound fertilizer is applied to a tree. In the later stage, trace elements, manganese and magnesium were sprayed to improve fruit quality.

3. Fertilization method

Using square fertilization, dig about 5 ditches at the edge of the crown, 0.3 meters wide, and gradually deepen from outside to inside. This is suitable for plant application when compound fertilizer is used. The use of annular ditch application for young trees is beneficial to absorption. Furrow fertilization, suitable for the application of base fertilizer, sometimes fertilizer is not enough, can not carry out universal application in the whole garden.

In the chestnut orchard with thin soil, a circular ring trench was dug in the chestnut crown drip line, with a width of 25 cm and a depth of 20 cm. Each plant was 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 to make fertilizer and water permeate into the root as soon as possible. After fertilization, the soil should be returned to fill the ditch in time to prevent the volatilization of nutrients. Farmers can also add appropriate amount of soil miscellaneous fertilizer to fertilize the soil, which has a good effect on more fruit and less empty buds of Chinese chestnut in the coming year.

4. Principles of fertilization

The base fertilizer is mainly farm manure, which has the auxiliary effect of improving the soil. when it is used after fruit picking, the temperature is high and the ripening of fertilizer is relatively easy. It's also the root period. Topdressing is mainly available nitrogen, with phosphate fertilizer and potash fertilizer. Topdressing is mainly in spring and summer. If the leaf is sprayed with fertilizer, it can be carried out many times in a year. The key point is before the branch tip blossoms and one month before harvest.

Chestnut fertilization is mainly in the case of sufficient base fertilizer, and then according to the growth stage of reasonable topdressing, in addition appropriate targeted foliar fertilizer. In addition, the appropriate fertilization method can be chosen.