Detailed Explanation of the Latest High-Yield Fertilization Techniques for Chinese Chestnut

Chinese chestnut is mostly planted in mountainous and hilly areas and has strong adaptability, but its management is relatively extensive. When the Chinese 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 planting Chinese chestnut, but fertilization must not be carried out blindly. How should 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 year-round growth of Chinese chestnut. It is the starting point of Chinese 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 make the best preparation for high yield in the coming year. The base fertilizer for young trees is applied before planting, and after fertilization, the fertilizer is turned into the soil layer in combination 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 multi-year plants, base fertilizer is also mainly organic fertilizer, applied 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 nutrient requirements 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 per 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 note 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 to make the fruit plump and increase yield.

3. Leaf spraying fertilizer

Chinese chestnut also needs other trace elements during growth. A lack of these elements in planting may cause symptoms such as leaf fading and yellowing and death, but fertilization cannot supplement these nutrients in a short time. At this time, foliar spraying is needed to quickly supplement what the plant needs. There are 3-4 times per 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 flower formation. The second time is in June, when 0.1%-0.3% potassium dihydrogen 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% potassium dihydrogen phosphate once. It can be sprayed once or twice according to the plant's condition. This can promote the transfer of plant nutrients into the fruit, increase grain weight, and have an obvious yield-increasing effect.

The above is the entire content of high-yield fertilization techniques for Chinese chestnut. We hope it can help you. If you want to learn more about Chinese chestnut planting knowledge, please follow us.