The latest course of fertilization techniques for High yield of Chinese Chestnut

Chestnut is planted in mountainous areas, has strong adaptability, but the management is more extensive, and when chestnut blossoms, it needs a lot of nutrition to grow, and if the nutrition is insufficient, it will lead to a higher rate of empty buds, affecting yield and quality, so that the income decreases. Therefore, sufficient fertilizer should be provided for chestnut planting, but fertilization should not be carried out blindly. How to fertilize it to achieve high yield? Let's take a look.

1. Apply enough basal fertilizer

Base fertilizer refers to the basic fertilizer required for chestnut growth throughout the year. It is the clean point of chestnut fertilization technology. After applying enough base fertilizer, the young trees planted in that year can promote their rapid growth and make them grow healthy, laying the foundation for more flowering and fruiting in the future; and after applying enough base fertilizer to the plants planted for many years, they can enhance the photosynthetic efficiency of the leaves, so that they can recover the tree vigor as soon as possible, supplement the consumed nutrients, accumulate nutrients, and prepare for the best high yield in the coming year. The basal fertilizer of young trees is applied before planting, and the fertilizer is turned into the soil layer in combination with cultivated land after fertilization. Generally, the basal fertilizer is mainly organic fertilizer, supplemented by nitrogen, phosphorus and potassium fertilizer. 2000-3000 kg of completely decomposed organic fertilizer is applied per mu, and 100-200 kg of nitrogen, phosphorus and potassium fertilizer can be matched. The base fertilizer for many years is also based on organic fertilizer, which is applied according to the tree vigor, soil fertility and fruiting trees. Generally, the trees with moderate tree vigor, medium fertility and more fruits need to be applied with 2000 kg organic fertilizer and 1.0-1.5 kg sulfur-based compound fertilizer/plant.

2. Timely topdressing

In addition to applying sufficient base fertilizer, the plant has different requirements for nutrients at various growth stages. For example, the nutrient requirements are extremely high when flowering and fruiting, and the base fertilizer is also left at this time, so topdressing is needed to ensure the growth of the plant. Generally, topdressing is needed three times a year. The first time is during flowering in March to April, so that the planting has enough nutrients to bloom more and prepare for high yield. At this time, nitrogen fertilizer is mainly applied, phosphorus and potassium fertilizer are supplemented, and 0.5 kg of nitrogen fertilizer and 0.1 kg of phosphorus and potassium fertilizer are applied to each plant, which can promote the emergence of leaves and shoots and improve the fruit setting rate. The second time in May-June when the flowering, topdressing fertilizer, to lay a good foundation for the results, this time fertilizer is also applied phosphorus and potassium, but it should be noted that the proportion of nitrogen should be reduced, while the proportion of phosphorus and potassium needs to be increased. The third time in July to August fruit period, this time is the fruit expansion growth period, need to increase the right amount of organic fertilizer and boron fertilizer, can make the fruit particles plump, improve yield.

3. Leaf fertilizer spraying

Chestnut also needs other trace elements when growing, planting lack of these elements may appear leaves fade yellow, dead and other symptoms, but fertilization can not supplement these nutrients in a short time, then need to carry out foliar spraying, can quickly supplement the plant needs. 3-4 times a year, the first time in May, when the new leaves grow and begin to bloom, spraying 0.3%-0.5% urea and borax at this time can promote basic leaf functions, improve photosynthesis and promote pot flower formation. For the second time in June, 0.1%~0.3% potassium dihydrogen phosphate can be sprayed once to improve the disease resistance of plants. For the third time, spraying 0.1% potassium dihydrogen phosphate once or twice one month or half a month before harvest, according to the plant condition, can promote the plant nutrition like fruit transfer, increase grain weight, have obvious yield increase effect.

The above is all the content of high-yield fertilization technology of chestnut, I hope to help you, if you want to know more about chestnut planting knowledge, please pay attention to us.