How to fertilize carambola? Master the correct key points of fertilization techniques
Carambola is an evergreen small tree of the Oxalidaceae family and a very typical tropical fruit. The carambola fruit is very peculiar: when cut crosswise, it forms a five-pointed star shape. Carambola has very high nutritional value and strong growth capacity, with high nutrient requirements, so fertilization is indispensable in cultivation. So how exactly should carambola be fertilized when growing it? Below, the editor brings you the fertilization techniques for carambola. Let's take a look!
1. Apply sufficient base fertilizer
Base fertilizer is the key to ensuring the robust early growth of carambola, and it is generally applied into the planting hole when newly planting the fruit trees. The base fertilizer is mainly composed of decomposed farmyard manure, combined with an appropriate amount of superphosphate. Usually the amount of base fertilizer in each planting hole is kept at about 20 kg, with farmyard manure accounting for 80%. When applying the base fertilizer, it is necessary to mix the base fertilizer thoroughly with the soil and then backfill it. When backfilling, note that it should be about 20 cm above the ground to prevent water accumulation from affecting the growth of carambola seedlings. Base fertilizer needs to be applied after harvest every year, in order to ensure the flowering and fruiting of the carambola trees the following year.
2. Apply topdressing at the right time
Topdressing for carambola is mainly determined by various factors such as the age of the carambola tree and the amount of fruit produced. For example, during the young tree stage, the nutrient absorption capacity is not strong, but a certain amount of nutrition is needed, so during the young tree stage, it is mainly a matter of applying more frequently in small amounts. Topdressing is needed once every year before November. When the growth rate of the carambola tree gradually declines, stop applying nitrogen fertilizer. Then at the winter solstice, apply decomposed farmyard manure in a hole for each tree to enhance the vigor and cold resistance of the carambola tree. Pay attention to the amount; do not apply too much, as excessive application can easily cause fertilizer damage, leading to pests and diseases and affecting the growth of carambola.
3. Winter fertilizer
The main application of winter fertilizer is very important, because after harvest, most of the nutrients in the fruit tree leave the tree with the fruit, resulting in a lack of nutrients in the fruit tree and a decline in tree vigor. In addition, winter temperatures are low, which is very unfavorable to the growth of carambola trees. Therefore, applying winter fertilizer well can restore the vigor of carambola as quickly as possible, reduce the harm of low winter temperatures, and improve the cold resistance of carambola. To prepare for the next year's growth, the fertilizer is mainly organic fertilizer, and the amount applied should be determined according to the size of the tree, its vigor, and the amount of fruit produced.
4. Shoot-promoting fertilizer
Shoot-promoting fertilizer is mainly applied around April each year when the spring shoots of the carambola tree sprout, and the fertilizer is mainly nitrogen fertilizer. The purpose is to promote the sprouting of spring shoots, ensure robust growth, and increase the amount of flowering. Then in summer, topdressing should also be applied about twice. For some carambola trees that fruit more than twice, it can play a role in protecting flowers and fruit. However, in the south, it is during the rainy season, and fertilizer is easily washed away by rain, so it should be applied in stages. At the same time, pay attention to controlling the amount to prevent fertilizer damage and increase cultivation costs.
The above is a brief introduction to carambola fertilization techniques. The fertilization work for carambola is very important. Because carambola has a high fertilizer requirement, if nutrients are insufficient, the flowering and fruiting amount of carambola will drop sharply, affecting cultivation benefits. That is all for today's introduction. This article is for reference only. Friends who want to learn more related information, please continue to follow us!