What kind of fertilizer should be applied to the dragon fruit tree? How to fertilize?

During the period of planting dragon fruit, in order to have a high yield, in addition to the basic management skills, we should also pay attention to the fertilization methods in each period. At the same time, we should not only apply fertilizer if we want to, but also adopt appropriate fertilization methods according to the characteristics of fertilizer demand. what kind of fertilizer should be applied to the dragon fruit tree? How to fertilize?

The fertilizer of dragon fruit is mainly organic fertilizer, with a small amount of chemical fertilizer. In the part of farm manure, according to the proportion of chicken manure, pig manure and peanut bran at 1:2:7, the usage is about 9 cubic meters per 667m2 (according to soil fertility and seedling growth). In addition, nitrogen fertilizer and potassium dihydrogen phosphate should be applied as needed, and trace amounts should be added in case of element deficiency. The results show that the application of fertilizer in the most suitable period can reduce the times of fertilization and improve the utilization rate of fertilizer.

In areas with high temperature and heavy rain, repeated thin application can improve the utilization rate of fertilizer. Pitaya can be fertilized three times a year in July, October and March of the following year, with cow manure compost 1.2 kg / plant and compound fertilizer 200 g / plant respectively. Foreign field experiments show that the application of nitrogen fertilizer generally has a continuous effect on increasing yield, while the effect of phosphate fertilizer on increasing yield is shown in the first two years, and potash fertilizer and trace elements (Bforce Cuprit Zn and mn) have a better effect on the increase of yield in the later stage.

For the cultivation of high quality and high yield, it is recommended that the amount of fertilizer applied to dragon fruit is 80 kg / ha in the first year, 20 kg / ha in the second and third years, and 10 kg / ha in the third year. In addition, each fruit tree uses Saleford's third-generation biological mineral fertilizer according to its age, which can provide balanced nutrients and improve the soil environment.

Fertilization time of dragon fruit

1. The base fertilizer was carried out from January to February before planting. In the orchard planting pit in the hilly and hilly land, about 40-50 kg of soil fertilizer, weeds, mushroom fertilizer, livestock manure or fungus fertilizer and 3 kg of lime were applied in layers. The soil mound was used in the flat orchard, and about 15-20 kg of rotten livestock manure or mushroom fertilizer and 1.5 kg of lime were applied to each planting hole.

2. The vegetative growth period of dragon fruit is from fertilization and colonization to before flowering and fruiting. After planting, it is confirmed that the plant has survived and fertilization can promote the rapid growth of branches and vines. Liquid fertilizer of rotten bran cake (water fertilizer) or water fertilizer of rotten livestock manure is suitable at seedling stage, and thin fertilizer is frequently applied as the principle. Each time when new branches sprout and start to turn green, the liquid fertilizer is about 1.5-2 kg per column. 15-15-15 nitrothio group can also be selected, each time the amount of fertilizer application is about 50-80g/ column. The amount of fertilizer applied from the second year is about 50% more than that of the first year. 80%.

3. In the fruiting period, the dragon fruit blossoms and bears fruit many times a year, the flowering and fruit period lasts for more than 6 months, and the branches and fruits grow at the same time. Generally, there are five main fertilization periods in the whole year.

Cover the tree plate with organic fertilizer in winter: when the branches have completely turned green from December to January in winter, the tree plate is covered with organic fertilizer, 10 kg of mixed organic fertilizer per column, or 15 kg of soil fertilizer per column. The aim is to improve the soil, increase organic matter and enhance the cold resistance of plants.

Flower-promoting fertilizer: in the first and middle of April, 17-17-17 compound fertilizer was applied 1-1.5 kg per column, in order to promote the development of flower buds and improve flower quality.

Strong flower and strong fruit fertilizer: in the first and middle of June, 0.5-1kg of biological fertilizer and 0.5kg of 17-17-17 compound fertilizer were applied per column in order to strengthen flowers, promote fruit enlargement and improve fruit quality.

Re-application of flower-promoting and strong fruit fertilizer: in the early and middle of the 8th, focusing on the production of Mid-Autumn Festival and National Day fruits. The purpose of applying rotten bran cake fertilizer 1-1.5 kg and compound fertilizer 15-15-15 (N 15: P 15: K 15) 0.8-1 kg per column was to promote flowering, fruit expansion and quality.

Fertilizer for strengthening fruit and restoring tree potential: in the upper and middle of October, compound fertilizer 17-17-17 (N 17: P 17: K 17) 0.5-1 kg and bacterial fertilizer 3-4 kg were applied per column, in order to promote the expansion of the last batch of fruits, restore tree potential and promote the growth of branches.

4. foliar topdressing fertilizer was sprayed 3-5 times at flower bud stage and fruit development stage. Commonly used foliar fertilizer types are: potassium dihydrogen phosphate, nucleotides, etc., spray concentration according to the description of reasonable use.

Fertilization methods for dragon fruit trees:

1. Circular fertilization

Circular fertilization is also known as rotational fertilization, which mainly involves digging an annular ditch around the dragon tree crown to fertilize. This method of fertilization is relatively simple, economical fertilizer and other advantages. However, in the actual process of digging ditches, it is easy to destroy the horizontal roots, and the area and scope of fertilization is small, so this method is generally more suitable for the fertilization process of young trees.

2. Semi-circular fertilization

This method is similar to the ring fertilization mentioned above, which mainly divides the ring into three or four pig trough ditches. Therefore, this method is also known as pig grass fertilization. This kind of fertilization method has less damage and damage to the roots, so changing the fertilization position properly will effectively expand the fertilization position. It can be used in both flat and mountainous areas, and it is a kind of fertilization method which is often used in modern hilly orchards.

3. Irrigating fertilizer

This method of fertilization is the combination of fertilization and irrigation. With the development and improvement of drip irrigation technology in China in recent years, this technology has been popularized and applied accordingly. No matter it is combined with sprinkler irrigation or drip irrigation to carry out irrigation fertilization, because of the timely supply of fertilizer and the relatively uniform distribution of fertilizer, it will not cause damage to the root system, but also can ensure that the soil structure of the tillage layer will not be changed. it saves a lot of labor. The appropriate combination of this method and other fertilization methods will improve and supplement the shortcomings of various fertilization methods and give full play to the maximum effectiveness of fertilizer.

Fertilization management after planting each year, fertilization can be started when it is determined that the seedlings have survived. In the seedling stage of dragon fruit, it is best to focus on water and fertilizer, and to ensure that thin fertilizer is applied frequently, about twice a month is the best, on this basis to gradually increase the amount of fertilizer.

For adult plants, when fertilizing them, try to choose spring every year, especially for fruiting plants, May is the best month to fertilize. In this process, attention should be paid to the maintenance of fertilizer moisture so that fertilizer application and management should be carried out under appropriate climatic conditions, so as to ensure the size and sweetness of the fruit. It should be noted that in the process of fertilization, if the effect of fertility is to infiltrate into the dragon fruit as soon as possible, it is necessary to strengthen the fixation of fertilizer on the soil and leaves. However, it is necessary to further control its fertilization, do not have too much fertilizer.