Fertilization method of red jujube: is it necessary to apply fertilizer to grow red jujube? What is the method of planting and fertilizing red jujube?

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Fertilization is a management measure to ensure high yield and high quality of jujube. Whether fertilizer is applied properly or not directly affects the growth and fruit of jujube. Reasonable fertilization can not only improve the yield and quality of jujube, but also save fertilizer, labor and reduce production costs.

   Fertilization must be combined with water management and pruning management measures, in order to give full play to fertilizer efficiency. For example, fertilization needs to consider soil texture and characteristics, and at the same time needs to take into account water management, because only good soil structure and physical and chemical properties are conducive to the activity and reproduction of beneficial microorganisms, and accelerate the decomposition of fertilizer. The decomposition of fertilizer, the absorption of nutrients by tree roots, and the transportation of nutrients in tree bodies all require the participation of appropriate water content in order to proceed smoothly.

   The establishment of fertilization system in jujube orchard should consider the growth conditions of jujube, and the timing, amount and type of fertilization should be determined according to the age, tree vigor and fruit yield, so as to achieve rational fertilizer management.

According to the characteristics of fertilizer requirement of jujube trees and the experience of jujube farmers, if appropriate fertilizer composition can be applied in time, it will help to improve the yield and quality of jujube trees by applying base fertilizer in winter, spreading fertilizer before germination, spraying foliar fertilizer at flowering stage, applying topdressing in stages of fruit hypertrophy, applying fertilizer before harvest, and spreading fertilizer after harvest. The concept of fertilization in the following stages is explained respectively:

Jujube bud, flower bud differentiation and even flowering, most of the consumption is last year's storage nutrition, in order to increase the storage nutrition of the tree, can consider about 1 month before the defoliation into the base fertilizer, the late-maturing jujube before the harvest into the fertilizer is the best, at this time the leaves still have higher photosynthetic efficiency, sufficient sunshine, cool autumn, large temperature difference between day and night, conducive to the accumulation of organic nutrients. Autumn base fertilizer should be mainly organic fertilizer, appropriate with some quick-acting fertilizer. Organic fertilizer, combined with quick-acting nitrogen fertilizer or nitrogen, phosphorus and potassium compound fertilizer, can promote the absorption of nutrient elements by roots and increase the accumulation of nutrients in trees. flower bud close-up

  Jujube sprouts in the middle and late March, and topdressing can be carried out before germination in the first ten days of March. This topdressing is particularly important, which not only promotes germination, but also is very beneficial to flower bud differentiation, flowering and fruit setting. The early growth period of jujube is the period when each organ competes intensely for nutrition. At this time, due to insufficient storage nutrition of tree body, the normal development of each organ is affected, and even the flowering and fruit setting are poor, and the fruit development is hindered. Therefore, this topdressing not only ensures the normal growth of jujube trees and the demand for nutrients, but also contributes to the improvement of yield.

jujube bearing many seeds

   Jujubes bloom a lot, flowering time is long, need to consume a lot of nutrition, during this period if the nutrition supply is not enough, will cause a large number of flowers and fruit drop. Therefore, if the tree nutrition can be supplemented in time at flowering stage, it can not only improve the fruit setting rate, but also benefit the fruit growth and development. Flowering topdressing is mostly applied by foliar spraying organic liquid fertilizer. Fertilizer enters through leaves and is absorbed faster than from soil, so it can supplement nutrients needed in time. Topdressing in flowering period is usually sprayed once when jujube blossoms are 30%, and sprayed once every week to improve the fruit setting rate of jujube.

After the first physiological fruit drop, the fruit develops rapidly, the initial stage of development is cell division, when the cell stops dividing, the cell number no longer increases, and then the fruit development is manifested in the increase of cell volume, but whether it is the increase of the number of fruit cells or the increase of cell volume, it directly affects the size of the fruit, and then affects the yield. If adequate nutrition can accelerate cell division and volume increase, such as insufficient fertilizer and water will affect the development of fruit, even fruit drop. Therefore, topdressing at young fruit stage not only directly affects the yield, but also affects the quality of fruit. Topdressing in the middle and late May was suitable, and appropriate N, P, K compound fertilizer could meet the needs of jujube fruit development and improve fruit quality.

  K fertilizer should be applied in late June (two weeks before white ripening), and the orchard soil should be kept slightly dry, which can promote the growth of fruit before ripening, increase fruit weight and fruit solid accumulation. In addition to topdressing, a small amount of nitrogen, phosphorus and potassium fertilizer can also be sprayed, which can delay the senescence process of leaves, improve the photosynthetic efficiency of leaves, facilitate the accumulation of nutrients in the later stage, and have a good impact on the growth and fruit of the next year.

if that method of branch pulling and prop can be used to distribute the stored nutrients needed for early growth, the balance between vegetative growth and vegetative growth can also be regulate at the early stage of fruit setting, which is beneficial to the stability of fruit setting and the hypertrophy of fruit. Picked in the middle and late May at young fruit stage and summer shoot initiation stage is helpful to fruit stability and fruit hypertrophy. Fixing the fixed pillars in late June or strengthening the trunk support can prevent the wind from falling and breaking branches.