Complete Book of Annual Fertilization Time for Fruit Trees (Annual Fertilization Method for Fruit Trees)

Fertilization of fruit trees in spring is the key period for storing nutrients, and the best time for fertilization is from before germination to before flowering. Secondly, the best time to fertilize fruit trees in summer is after the new shoots of fruit trees stop growing and before the flower buds concentrate and differentiate. From the specific fertilization time, it is generally the most suitable to fertilize fruit trees in the first half of June in summer. Then autumn fertilization is the most important fertilization in the annual fertilization management of fruit trees.

In the management of fruit tree planting, there has always been a saying that "fruit tree fertilization is 369", which is what our fruit farmers usually say and do: fertilization in spring, fertilization in summer and fertilization in autumn.

What month is the annual fertilization time for fruit trees?

Generally speaking, the fertilization time for fruit trees in spring is from early March to mid-April, and the best fertilization time for fruit trees in summer is from mid-June to early July, and the best fertilization time for fruit trees in autumn is from mid-September to the end of 10.

These three fertilization periods not only correspond to the "three, six and nine" fertilization periods of fruit trees, but also correspond to the three vigorous root growth periods of fruit trees: spring root growth period, summer root growth period and autumn root growth period.

In addition, the main purpose of fertilization for fruit trees is to protect flowers and fruits in March in spring (promoting budding, spreading leaves and setting fruits), to promote flower and fruit expansion in June in summer (promoting flower bud differentiation and young fruit expansion), and to promote roots and strengthen trees in September in autumn (promoting root growth and tree rejuvenation).

Fertilization of Fruit Trees in Spring: Promoting Branches, Flowers and Fruits

Fertilization of fruit trees in spring is the key period for storing nutrients, and the best time for fertilization is from before germination to before flowering (about March-April).

During this period, the nutrients accumulated by fruit trees last autumn were basically exhausted, and it is urgent to increase and reserve the nutrients of trees through fertilization.

At this time, fertilization is to accumulate sufficient nutrients for the next germination, leaf spreading, flowering, fruit setting and the rapid growth of spring buds and roots.

If fertilization is insufficient during this period, it will not only obviously inhibit the normal growth of new buds, leaves, shoots and roots of fruit trees. And it will have a very adverse impact on the smooth flowering and fruiting of fruit trees in the future.

All fruit trees with correct fertilization types, proper methods and reasonable dosage in spring generally have obvious advantages of fast growth, thick leaves, strong branches, developed roots, early flowering and high fruit setting rate.

Most fruit trees with insufficient fertilization in spring will have problems such as slow growth of new leaves, emaciation, poor quality of flowering and fruit setting, low flowering and fruit setting rate, large amount of falling flowers and fruits, and low rate of keeping flowers and fruit setting.

Matters needing attention about fertilization of fruit trees in spring, on the one hand, are due to the low soil temperature and weak root absorption capacity at this time. Therefore, it is not appropriate to use a lot of ditching to break the soil and damage the root system in spring orchard fertilization.

Otherwise, excessive root damage will affect the bottom-up transport of nutrients and weaken the spring growth of fruit trees.

On the other hand, due to the growth of new leaves and the germination of roots in spring, a lot of nitrogen fertilizer needs to be consumed.

Therefore, high nitrogen fertilizer should be selected for orchard fertilization in spring (mainly nitrogen fertilizer, with appropriate amount of phosphorus and potassium fertilizer), and farmers with conditions suggest applying microbial bacterial fertilizer of about 10 kg per mu, which will make the fertilization effect more prominent.

Among the methods of fertilizing fruit trees in spring, the time of fertilizing fruit trees in spring should be sooner rather than later. The Agricultural Technology Basket suggests that everyone should try to complete fertilization in the orchard 7- 10 days before the fruit trees germinate.

We try to choose high-nitrogen water-soluble fertilizer with strong quick-acting and high absorption and utilization rate for irrigation. If we use conventional fertilizers for root mulch and fertilization.

It is suggested to apply fertilizer as shallowly as possible in spring, such as applying fertilizer on the tree tray or digging shallow radial ditches, which is beneficial to minimize the damage to the root system of fruit trees.

In the specific amount of fertilizer applied to fruit trees in spring, we decided to consider three aspects: the amount of fertilizer applied at the end of last autumn, the strength of tree potential and the amount of flower bud formation.

All fruit trees with sufficient base fertilizer, vigorous trees and moderate flower buds last year can apply less chemical fertilizer when fertilizing before germination in spring.

All fruit trees with insufficient base fertilizer and weak trees with large flower buds last year and orchards with small fruit bearing years (especially weak trees and fruit trees with large flowers) should be fertilized more before germination in spring.

Fertilization of Fruit Trees in Summer: Promoting Flowering and Fruiting

The best time to fertilize fruit trees in summer is after the new shoots of fruit trees stop growing and before the flower buds are concentrated and differentiated. In terms of specific fertilization time, it is generally the most appropriate to fertilize summer fruit trees in the middle and early June. Too early or too late is not conducive to promoting the expansion of fruit trees.

At this time of fertilization of fruit trees in summer, not only the new shoots of fruit trees in spring have basically stopped growing. Moreover, young fruit trees have ushered in the first rapid expansion and development period, and the flower buds on fruit trees are about to usher in a critical period of concentrated differentiation.

At the same time, the root system (summer root) of fruit trees will also usher in the second growth peak of the year.

At this time, timely topdressing summer fertilizer for fruit trees has several functions:

On the one hand, it can promote the rapid expansion and development of young fruits;

On the other hand, it can promote flower bud differentiation with sufficient quality;

On the other hand, it can also promote the vigorous growth of summer roots of fruit trees.

Therefore, it is very important to topdress the fruit trees around June in summer. This fertilization management can not only ensure the high yield of fruit trees in that year, but also ensure the smooth flowering of fruit trees in the coming year with good fruit size.

If the topdressing of fruit trees is not in place in summer, the nutrients stored in the early stage of the tree body are basically consumed, which will lead to the failure of fruit trees to meet the nutritional supply.

Not only will a large number of young fruits fall off (physiological fruit drop is aggravated), but the quality of flower bud differentiation is also poor. Moreover, the young fruits in the first rapid expansion and development period will also cause problems of small size and poor quality in the later stage because of insufficient nutrition supply.

In the selection of fertilization types for fruit trees in summer, because the vegetative growth of fruit trees (branches and leaves) basically stops at this time, the focus of growth has shifted to the reproductive growth of flowers and fruits, so the focus of fertilization at this time should be potassium supplement, phosphorus supplement and nitrogen control.

Therefore, it is suggested that when topdressing fruit trees in summer, it is best to choose quick-acting high potassium fertilizer, such as high potassium, medium/low phosphorus and low nitrogen fertilizer.

If the orchard fruit trees with poor tree potential can also use balanced nitrogen, phosphorus and potassium fertilizers, the specific choice of fertilizers should be flexibly grasped in combination with the actual situation of their own fruit trees.

It is suggested that you try to choose a water-soluble fertilizer with good water solubility, quick effect and high nutrient absorption and utilization rate in summer.

If conventional fertilizers (such as compound fertilizer or urea, potassium sulfate, etc. ) They are all used. I suggest you use them together with watering. Water should be given immediately after fertilization to dilute the fertilizer concentration and promote the root absorption of fruit trees.

In summer, it is best for farmers with conditions to adopt the method of water and fertilizer integration (such as drip irrigation) or use water-soluble fertilizer for washing. In addition, we can also use conventional fertilizers for hole application or furrow application.

When fertilizing fruit trees in summer, we should not only fertilize the roots well, but also better promote the expansion of flowers and fruits. I suggest that everyone complement each other in large, medium and small quantities.

During this period, you'd better use foliar fertilizers such as potassium dihydrogen phosphate, octaboron tetrahydrate (boron fertilizer), chelated calcium (calcium fertilizer) and chelated zinc (zinc fertilizer) to spray continuously for 2-3 times, every 7- 10 days/time.

This ensures that the nutrition supply of fruit trees is comprehensive and sufficient, and avoids affecting the development of flowers and fruits or inducing various physiological diseases due to lack of nutrition in the growing period.

Fertilization of Fruit Trees in Autumn: Promoting Roots and Strengthening Trees

Autumn fertilization of fruit trees is the most important fertilization in the annual fertilization management of fruit trees.

By reasonable and sufficient fertilization of fruit trees in autumn, not only can the weak trees after a year of flourishing, flowering and fruiting be quickly supplemented with insufficient nutrition, but also the trees can be quickly rejuvenated.

At the same time, fertilization at this time can also promote fruit trees to store more nutrients before falling leaves in autumn and winter, laying a solid nutritional foundation for fruit trees to overwinter and germinate, sprout, grow leaves, bloom and set fruit in the next spring.

In addition, autumn is the third peak of fruit tree root growth (autumn is the longest root growth period), and timely and early application of autumn fertilizer can also make fruit trees grow more new roots and absorb fertilizer nutrients more effectively.

In the time management of autumn fertilization for fruit trees, it is more suitable to fertilize after the autumn shoots of fruit trees stop growing, and the fertilization should be complete in variety and sufficient in dosage.

In autumn, the general fertilization time for fruit trees is about 9-65438+ 10. If it is an early-maturing fruit tree variety, it is recommended to apply fertilizer within 7- 10 days after fruit harvesting.

If it is a mid-late maturing fruit tree variety, then the agricultural technology basket suggests that everyone try to fertilize the fruit before harvesting. Early application of autumn fertilizer can make fruit trees replenish nutrients and rejuvenate as soon as possible.

This will also help fruit trees to absorb nutrients early, so as to prolong the time for photosynthesis of leaves to produce nutrients, and let fruit trees store more nutrients in the trees before winter.

When applying fertilizer to fruit trees in autumn, we should not only pay attention to "satiety", but also pay attention to "eat all and eat well" in this fertilization.

At the same time, we should provide fruit trees with nutrients that can be absorbed and utilized for a long time.

Therefore, in the autumn fertilization management of fruit trees, when we fertilize fruit farmers, we can't just use long-acting and slow-acting organic fertilizers or decomposed farmyard manure as the main fertilization types. We also need to use an appropriate amount of nitrogen, phosphorus and potassium fertilizer according to the age of the tree, the size of fruit yield and the strength of the tree.

In addition, a certain amount of medium and trace elements such as calcium, zinc, iron and boron should be reasonably applied in orchards where fruit trees lack elements (medium and trace element fertilizers can also be sprayed on the leaves). When applying autumn fertilizer to fruit trees, it should be combined with deep ploughing and watering of orchard land.