The amount and method of bio organic fertilizer on fruit tre
Orchard fertilization should be based on base fertilizer, supplemented by topdressing fertilizer, and should be applied timely and reasonably according to the characteristics of fertilizer and different growth stages of fruit trees.
The base fertilizer application of fruit trees is generally carried out after fruit harvest, but it is better after the autumn shoots stop growing, that is, from late August to September. It is better to apply base fertilizer in autumn for young trees without fruit.
In order to ensure high and stable yield of fruit trees, the general high-yield orchards attach great importance to the application of base fertilizer. The base fertilizer of fruit trees should be mainly organic fertilizer, such as stable manure and poultry manure. As for the amount of organic fertilizer used as base fertilizer, the experience of fruit growers is that the amount of organic fertilizer should be determined according to the number of fruit trees. For example, for fruit trees with a yield of 2500 kg per mu, 2500 kg of organic fertilizer should be applied per mu, and then the fertilizer should be distributed according to the number of trees per mu. When applying base fertilizer in autumn, we should also add some nitrogen, phosphorus and potassium fertilizers or compound fertilizers to form huge root system of fruit trees and lay a good foundation for high and stable yield of fruit trees.
Base fertilizer application for fruit trees is one of the important contents of orchard soil management. Fertilization methods should be determined according to tree vigor, root distribution, tree age and soil conditions. In general, the ring and half ring furrow method is suitable for young trees. Strip application, hole application, radial furrow application and whole garden spreading application are mostly used for adult trees. The depth of fertilization is generally 20-30 cm. With the expansion of tree crown, the scope and depth of fertilization should be increased accordingly. In a word, fertilizer should be applied to the soil layer where the roots are mainly distributed to facilitate the absorption and utilization of nutrients by the root system of fruit trees.
The phenomenon of fruit trees bearing fruit in large and small years has always been a puzzle for fruit farmers. It is not only a technical problem, but also a cognitive problem. For example, this year's fruit trees have more flowers and more fruits. It's a good harvest year, which is called big year. Next year may be a small year with less fruit. This is because farmers do not pay attention to flower thinning and fruit thinning, which makes the fruit trees consume too much nutrients and bear too much burden in that year, so the tree vigor is weak in the second year, resulting in less fruit. This is a problem to be solved in the balanced production of fruit trees.
Technically speaking, the problem of fruit bearing year can be solved. The growth of fruit trees is characterized by the need to store nutrients before winter. Fruit trees are large in size and store a lot of nutrients in their roots, branches and trunks. In addition to carbohydrates, there are also nitrogenous compounds and a variety of mineral elements. The germination, flowering and growth of fruit trees in early spring mainly depend on the consumption of the nutrients stored in the trees. Therefore, the basal fertilizer should be applied as soon as possible from the harvest to the defoliation, which is conducive to the differentiation of flower buds. At the same time, it has an effect on the flowering quality and fruit setting rate, the robust growth of branches, the expansion of fruits and the yield. Therefore, early application of base fertilizer to fruit trees is conducive to overcoming the problem of fruit bearing in large and small years.
1. Base fertilizer application for fruit trees is usually carried out as early as possible after fruit harvest. The specific application method should be based on tree vigor, root distribution and tree age.
2. Base fertilizer application for fruit trees is one of the important contents of orchard soil management. The basic fertilizer should adhere to the principle of combining organic fertilizer with chemical fertilizer.
3. Early application of base fertilizer and appropriate thinning of flowers and fruits will help to overcome the problem of fruit bearing in large and small years, so as to increase the yield of fruit trees in a balanced way.
Reference amount of organic fertilizer
Only when the fertilization method of fruit organic fertilizer is proper, can fruit organic fertilizer play a great role. Pay attention to the comprehensive application of special organic fertilizer, micro fertilizer and plant growth regulator in fruit trees.
In the spring and winter season, the maintenance of fruit trees is mainly to use organic fertilizer as the main fertilizer management method, supplemented by chemical fertilizer, fruit trees for the absorption of various nutrients. The orchard without basal fertilizer in autumn should be supplemented in spring. The best part is 40-60 cm deep outside the crown, 60-80 cm deep in the sand orchard, and the best part is circle fertilizer, cake fertilizer, green manure and crop straw. In the fruiting stage, 2 cubic meters of organic fertilizer were applied to the young trees per mu, and 2-4 cubic meters were applied to the big trees in the full fruiting stage, which reached the standard of Jin Guo Jin fertilizer or Jin Guo Bei fertilizer. At the same time, topdressing and formula fertilization can be applied at one time before germination or after flower falling, and it is better to be 1 meter away from the base of trunk. The standard of formula fertilization was as follows: 0.5 kg of pure nitrogen, 0.5 kg of phosphorus, 0.5 kg of potassium, 0.1 kg of zinc sulfate and 0.1 kg of ferrous sulfate were applied to each young tree at the early fruiting stage; 2 kg of urea, 3 kg of diammonium, 2 kg of potassium chloride, 0.5 kg of zinc sulfate and 0.5 kg of ferrous sulfate were applied to each big tree at the full fruiting stage. Water the ground after spraying.
Organic fertilizer is a kind of organic fertilizer used to improve soil physical and chemical properties, fruit quality, fruit weight and yield. It has a good effect on fruit trees with thick green leaves, plump buds, strong growth and reducing diseases and pests.