Detailed Explanation of Key Points of High-Yield Fertilization Techniques for Chestnut

Chestnut is mostly grown in mountainous areas and has strong adaptability, but its management is relatively extensive. When the chestnut blooms and bears fruit, it needs a large amount of nutrients for growth, and if nutrients are insufficient, it will lead to a high rate of empty burs, affecting yield and quality and reducing returns. Therefore, sufficient fertilizer must be provided when growing chestnut, but fertilization must not be carried out blindly. How can fertilization be done to achieve high yield? Let's take a look together.

1. Apply sufficient base fertilizer

Base fertilizer refers to the basic fertilizer provided for the whole year's growth of chestnut, and it is the starting point of chestnut fertilization techniques. For young trees planted in the current year, applying sufficient base fertilizer can promote their rapid growth, make them grow robustly, and lay the foundation for more flowering and fruiting in the future; for plants that have been planted for many years, applying sufficient base fertilizer can enhance the photosynthetic efficiency of leaves, help them recover tree vigor as soon as possible, replenish consumed nutrients, accumulate nutrients, and best prepare for high yield in the coming year. For young trees, base fertilizer is applied before planting, and after fertilization the fertilizer is turned into the soil layer together with plowing. Generally, base fertilizer is mainly organic fertilizer, supplemented by nitrogen, phosphorus, and potassium fertilizers. Apply 2000-3000 kg of fully decomposed organic fertilizer per mu, together with 100-200 kg of nitrogen, phosphorus, and potassium fertilizers. For plants grown for many years, base fertilizer is also mainly organic fertilizer, and fertilization is carried out according to tree vigor, soil fertility, and fruiting trees. Generally, for trees with moderate vigor, medium fertility, and more fruit, apply 2000 kg of organic fertilizer and 1.0-1.5 kg of sulfur-based compound fertilizer per plant.

2. Timely topdressing

In addition to applying sufficient base fertilizer, plants have different nutritional needs at each growth stage. For example, nutrient demand is extremely high during flowering and fruiting, and by then the base fertilizer has already been mostly used up, so topdressing is still needed to ensure the nutrients required for plant growth. Generally, topdressing is needed 3 times a year. The first time is during the flowering period in March-April, so that the plants have enough nutrients to bloom more and prepare for high yield. At this time, fertilization is mainly nitrogen fertilizer, supplemented by phosphorus and potassium fertilizers. Apply 0.5 kg of nitrogen fertilizer and 0.1 kg of phosphorus and potassium fertilizers per plant, which can promote leaf emergence and shoot growth and increase the fruit-setting rate. The second time is during the full flowering period in May-June. Topdressing is applied to lay the foundation for fruiting. This fertilization also applies phosphorus and potassium fertilizers, but it should be noted that the proportion of nitrogen fertilizer should decrease, while the proportion of phosphorus and potassium fertilizers should increase. The third time is during the fruit period in July-August. This is the fruit expansion and growth period, and an appropriate amount of organic fertilizer and boron fertilizer should be added, which can make the fruit plump and increase yield.

3. Leaf spraying fertilization

Chestnut also needs other trace elements during growth. A lack of these elements in cultivation may cause symptoms such as leaf fading and yellowing, and death. However, fertilization cannot supplement these nutrients in a short time, so foliar spraying is needed at this time, which can quickly supplement what the plant needs. This is done 3-4 times a year. The first time is in May, when new leaves grow and flowering begins. At this time, spray 0.3%-0.5% urea and borax, which can promote basic leaf function, improve photosynthesis, and promote the formation of female flowers. The second time is in June, when 0.1%-0.3% monopotassium phosphate can be sprayed once to improve the plant's disease resistance. The third time is one month and half a month before harvest, spray 0.1% monopotassium phosphate once. Depending on the condition of the plant, it can be sprayed once or twice, which can promote the transfer of plant nutrients into the fruit, increase grain weight, and have an obvious yield-increasing effect.

The above is all the content on high-yield fertilization techniques for chestnut. I hope it can help you. If you want to learn more about chestnut cultivation knowledge, please follow us.