What is the best fertilizer to use for autumn fertilization of fruit trees

It is best to apply organic fertilizer, macro-element fertilizer, biological fertilizer and medium and trace element fertilizer to fruit trees.

1. Organic fertilizer

Organic fertilizers are of great significance in improving the quality of fruits. After organic fertilizer is applied to the soil, organic matter can effectively improve the physical and chemical condition of the soil, mature the soil, enhance the fertilizer retention capacity and buffer capacity of the soil, and create good soil conditions for the growth of fruit trees.

At the same time, after the decomposition of organic fertilizer, it provides energy and nutrients for soil microbial activities, promotes microbial activities, accelerates the decomposition of organic matter, and produces active substances that can promote the growth of roots and improve the quality of fruits.

Pruned branches, fallen leaves, weeds and crop straw from fruit trees can be crushed and decomposed to be used as organic fertilizer.

2. A large number of elemental fertilizers

Nitrogen, phosphorus and potassium are the three essential elements of fruit trees, and the use of these three elements has been widely recognized and accepted by the majority of fruit farmers, and has played an important role in improving fruit yield.

It should be pointed out that a large number of elements not only refer to nitrogen, phosphorus, and potassium, but also include carbon, hydrogen, and oxygen. Carbon, hydrogen, and oxygen are also important, as they are obtained from air and water, respectively. Therefore, the orchard should not be closed, it must be ventilated and lighted, and the watering should be timely, and attention should be paid to maintaining the appropriate moisture of the soil.

3. Biological fertilizer

At present, there are many types of biological fertilizers, and the main ones that have a good effect on fruit trees are phosphorus, potassium and accelerated decomposition, and can enhance the decomposition ability of organic matter and soil permeability.

4. Medium and trace element fertilizers

Medium elements refer to silicon, calcium, magnesium, sulfur, the effect of fruit trees is second only to a large number of elements, in recent years studies have shown that medium elements to improve the resistance of trees and fruit quality play an important role, should be highly valued, should not only be treated as dispensable trace elements. In particular, silicon has a good effect on fruit trees and has attracted more and more attention.

Trace elements refer to iron, boron, manganese, copper, zinc, molybdenum, and chlorine, which are essential for fruit trees. Although trace elements are required in small quantities for fruit trees, they are indispensable.

Often, fruit trees have problems of one kind or another, and in many cases they are caused by the lack of an essential element. Therefore, it is very important to make up for the lack of trace elements in an appropriate amount to improve the yield and quality.

The autumn fertilization of fruit trees is mainly organic fertilizer and bacterial fertilizer, supplemented by macro-element fertilizer and various medium and trace element fertilizers, of which organic fertilizer and bacterial fertilizer should account for at least 70% of the total amount of fertilizer. Among the large number of elemental fertilizers, nitrogen fertilizer can be applied slightly more than phosphorus fertilizer, and potassium fertilizer can be applied without or less. What kind of nutrient deficiency occurred last year, you can apply some medium and micro fertilizers in a targeted manner.

Relatively high-quality organic fertilizer has well-rotted compost, manure, circle manure, green manure, crop straw and human manure, chicken manure, etc., these organic fertilizers have a variety of nutrients required by fruit trees, and continuous use in large quantities can effectively improve orchard soil. It should be noted that these organic fertilizers need to be fully decomposed, otherwise there will be serious root burning and soil compaction during the fermentation process.

Before fertilizing, it is necessary to have an expectation of the orchard yield in the coming year, and it is advisable to increase the orchard yield by 10-15% on the previous average. According to the experimental results, generally 25 kg (pure nitrogen) and 10-20 kg of phosphate fertilizer can be used per mu of orchard, which can meet the normal needs of the orchard. Boron and zinc deficiency are common in orchards, and generally 50 grams of boron fertilizer and zinc fertilizer can be applied to each adult production tree.

When the correct fertilization method is to open a ditch between the rows to fertilize, make a ditch between the two adjacent rows of fruit trees, and apply the fertilizer in the ditch. Orchard autumn fertilization, is to improve the soil, improve tree nutrients, raise flower buds necessary measures, fruit tree nutrients for a year, the vast majority of the first in the autumn fertilization,

The purpose of autumn fertilization of fruit trees is to supplement the needs of fruit trees in this period, and also to ensure the normal physiological activities of fruit trees during this period. Autumn fertilization is different from spring and summer fertilization, so what are the particulars of autumn fertilization?

Autumn fertilization mainly depends on these points!

Fertilize according to the situation.

According to the situation, the main problem is that we need to supplement the corresponding elements in time according to the specific situation of the fruit tree. So how to choose according to the needs of the fruit tree? For example, for fruit trees that are weak, we should increase the amount of fertilizer.

According to the balance principle of nitrogen, phosphorus and potassium nutrient content, the compound fertilizer with appropriate ratio of nitrogen, phosphorus and potassium is selected according to the fruit tree. For example, Ramla special fertilizer, for example, nutrient deficiency has always been a common topic, we should also learn to understand the specific symptoms of nutrient deficiency in time, and then according to the lack of elements and targeted supplementation of medium and trace elements. Of course, in the process of fertilization, we must also grasp the combination of organic fertilizer and fertilizer; It is also necessary to achieve the combination of macro-element fertilizer and micro-element fertilizer.

In the process of fertilization, it is also necessary to pay attention to watering, so as to ensure that the combination of fertilizer and water can play the best effect.

Fertilize according to the amount needed.

Understand the soil conditions of your own fields in an all-round way, and grasp the amount of fertilizer according to its fertility. To put it simply, it is "how much is missing, how much is made up", so as not to apply too much of a certain element and cause some physiological problems that should not occur; It is common to see the vigorous growth brought about by partial nitrogen fertilizer. Orchards entering a stable fruiting period, first determine the target yield, and then determine the amount of fertilizer we apply.

If the target yield is high, autumn fertilizer should be applied in larger quantities; If the target yield is low, fertilizer is applied relatively little. The target yield is based on the average yield of the orchard in the previous 3-4 years, with an increase of 10%-15%.

Control the correct fertilization method.

This is very important in the current orchard production management, and the correct method is twice the result with half the effort for fertilization. The common fertilization methods include strip furrow application, annular furrow application, hole application, etc., and the first two fertilization methods are suitable for autumn fertilization. At the same time of fertilization, according to the specific situation of fertilization and the situation of the orchard, it is combined with watering.

When is the best time to apply basal fertilizer to fruit trees in autumn? What fertilizer is good for autumn fertilization of fruit trees? In autumn, the fertilization of fruit trees is mainly organic fertilizer and bacterial fertilizer, supplemented by a large number of elemental fertilizers and various medium and trace element fertilizers.

Nitrogen fertilizer is slightly more than phosphate fertilizer, and in a large number of elemental fertilizers, potassium fertilizer is applied no or less.

Generally, most of the autumn fertilization of fruit trees is the application of compound fertilizer, in fact, this is not right, the purpose of autumn fertilization of fruit trees.

Therefore, it is better to fertilize in autumn with the following fertilizers: biological bacteria organic fertilizer, biological fungus type medium and micro fertilizer, decomposed manure (must be rotted), and the ground is sprinkled with silicon-calcium-magnesium-type calcium fertilizer to adjust the soil, and the comprehensive application of these fertilizers will be better, I hope it can help you.

In early autumn (mid-August to late September), the application of basal fertilizer is the peak of the second (full fruit period) or the third (special period for young trees) of the root system of fruit trees, and the root regeneration ability is strong, and the roots below 1 cm in diameter can send out new roots 20 days after fertilization, absorbing soil nutrients and water, which is conducive to the safe wintering of fruit trees. In early autumn, the ground temperature is suitable, the soil moisture is large, the microbial activity is vigorous, the fertilizer is fast decomposing, the salinity is high, and it is easy to be absorbed by the root system, especially for the flowering and fruit setting of fruit trees in the spring of the following year. In early autumn, the autumn shoots of fruit trees have basically stopped growing, and after applying base fertilizer, their fast-acting parts can be absorbed and utilized by the root system, which can not only enhance the function of leaves, but also store most of the photosynthetic products in the tree, enrich the tissues and flower buds, and is conducive to the safe wintering of fruit trees.

At the same time, in the spring of the following year, the fruit trees germinated early, developed leaves quickly, the leaves were large and thick, the photosynthesis ability was strong, and the nutrient exchange period was not obvious, which was conducive to the flowering, fruit setting and flower bud differentiation of fruit trees. The retarding part of the base fertilizer, after autumn, winter and spring, part is also converted into nutrients that can be absorbed by the roots of fruit trees, and the fertilizer effect can be exerted in spring, which is conducive to the flowering, fruit setting and spring shoot growth of fruit trees. Practice has proved that the effect of basal fertilizer application in early autumn is obvious, the flowering period can be two days in advance, 1 2 stubble flowers account for 98, flowering is concentrated, easy to pollinate, and the fruit setting rate is high, while the fruit setting rate of basal fertilizer in late autumn is only.