How to fertilize chestnut trees? These techniques you need to master

The chestnut is one of the dried fruits we eat often, and along with peach, apricot, plum and jujube it is known as one of the "five fruits". It is rich in vitamins, and it also has an osmanthus fragrance and can repel mosquitoes. Improper fertilization when growing chestnuts often leads to poor plant growth and reduced yield and quality. Below, let's learn about chestnut fertilization techniques together.

1. Base fertilizer

The best time to apply base fertilizer to chestnut trees is after harvest in autumn. At this time the temperature is relatively high, and the fertilizer, once decomposed, can supply nutrients to the plant over the long term. At the same time, this is also the period when chestnut trees sprout new roots, which favors absorption, thereby promoting nutrient accumulation in the tree. This has a good effect on flower bud differentiation the following year and lays the foundation for a high yield the next year. The specific amount of fertilizer applied should be considered based on the fruit load of the tree, tree vigor, tree age and other factors, mainly using farmyard manure or organic fertilizer, with an appropriate combination of phosphorus and potassium fertilizers and trace elements.

2. Topdressing

Topdressing is mainly quick-acting nitrogen fertilizer, reasonably combined with phosphorus and potassium fertilizers. Topdressing is generally done in early spring and summer, when flower bud differentiation and the flowering and fruiting stages occur, requiring large amounts of nutrients for growth and development and for flowering and fruiting. Spring application is generally 0.3-0.5 kg of urea per young tree and 2 kg of urea per tree in full fruiting, and topdressing should be combined with watering to give full play to the fertilizer's effect. Summer topdressing is generally carried out in July-August, when the young fruit is in the swelling stage. Topdressing with quick-acting nitrogen fertilizer and phosphorus fertilizer can promote fruit enlargement and plump flesh and improve fruit quality, but attention should be paid to the amount of nitrogen fertilizer applied, so as to avoid excessive vegetative growth, which would instead affect the yield and quality of chestnuts.

3. Foliar fertilization

The first two are root fertilization, but at certain times the plant needs a relatively large amount of fertilizer, and root absorption cannot meet the needs of growth, so foliar fertilization is needed as a supplement. Foliar fertilization is done several times a year. The first time is in early spring when the leaves at the base of the branches have just unfolded and are turning from yellow to green. At this time, spray 0.3%-0.5% urea plus 0.3%-0.5% borax, which can promote leaf function, improve photosynthesis, and promote flower formation, laying the foundation for a high yield. The second time is one month and half a month before harvest, spraying 0.1% monopotassium phosphate each time. Its main effect is to improve photosynthetic efficiency, promote the transfer of nutrients from the leaves into the fruit, and significantly increase single-grain weight.

The above is an introduction to chestnut fertilization techniques. We hope it helps you. To learn more related knowledge, please stay tuned to us.