The main points of the latest course on fertilization techniques of Castanea mollissima

Now is the time for Chinese chestnut to appear on the market, we also want to introduce some management points about the cultivation of Chinese chestnut, after all, Chinese chestnut is delicious but not easy to cultivate. Chinese chestnut is generally very tall, so the growth needs a lot of nutrition, that is, the basic growth nutrition is more than other fruit trees. So today I would like to introduce the main points of fertilization in detail.

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.

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.