Jujube trees are warm, happy, drought-tolerant and resistant to earthworms. They have strong adaptability to the soil. They can adapt to sandy soil, clay, low-alkali saline-alkali land and hilly land, and can also be cultivated in high mountain areas. The soil PH requirements are not very strict, PH5.5-8.5 can grow well. However, it is better to use deep, fertile and loose soil as the soil layer. Jujube tree fertilization should be based on the growth cycle, that is, to grasp the following fertilization period in order to play a timely fertilizer effect, is conducive to absorption, promote growth, increase production and quality.
First, pre-emergence topdressing is also called germination fertilizer, and the top-dressing northern jujube area is usually carried out in early April. Each plant is topped with 1.5 kg of phospho-potassium phosphate, especially the jujube garden where no basal fertilizer is applied in autumn. This top dressing is particularly important. Not only can it promote budding, but it is also very beneficial to flower bud differentiation and flowering and fruit setting. In the early stage of jujube growth, the competition for various organs is fierce. At this time, the normal growth and development of various organs are often affected due to lack of storage nutrients in the tree, resulting in poor flowering and fruit set and fruit development being hindered. Therefore, this topdressing not only ensures the normal growth of the jujube tree on the nutritional needs, but also help improve the yield.
Second, the flowering date jujube flower bud differentiation for the year, multiple differentiation, with the growth with the differentiation, long differentiation time, the number of differentiation. Therefore, jujube flowering quantity is large, flowering time is long, consumption of nutrients is more, and often due to lack of nutrition, resulting in a large number of flowering and fruit drop. The timely addition of tree nutrients during the flowering period can not only increase the fruit setting rate, but also benefit the growth and development of the fruit. During the flowering period, the method of foliar spraying of urea is often used, so that it is absorbed quickly and is conducive to timely supplementation of nutrition.
Third, to help fruit jujube after the first fruit drop, the fruit grows rapidly, the initial stage of cell division, mainly as an increase in the number of fruit cells, cell division in the late stop, showed an increase in cell size, but no matter the number of fruit cells The increase or increase in cell volume directly affects the size of the fruit or affects the level of yield. Adequate nutrition can accelerate the fullness of the split and increase the volume, such as fertilizer and water shortage, then affect the fruit's development and even fruit drop. Therefore, top dressing during fruit period not only directly affects the level of yield, but also affects the quality of the fruit. The top dressing is appropriate in mid-July. In addition to topdressing nitrogenous fertilizers, phosphorus and potash fertilizers are added to meet the demand of phosphorus and potassium elements in the development of jujube fruit and improve fruit quality.
Fourth, the top-dressing Top-dressing in August-September is particularly important for promoting fruit growth before maturity, increasing fruit weight and accumulating tree nutrients, especially for plants with more results. Late-stage topdressing not only benefits the increase in yield and quality, but also has a good impact on the growth and results of the following year. The top-dressing can be sprayed with nitrogenous fertilizer and combined with a certain amount of phosphorus and potassium fertilizers.
5. Before the harvest of basal fertilization in autumn, it is best to use basal fertilizer. At this time, the leaves still have high photosynthetic efficiency, sufficient sunshine, and high autumn and winter temperature, and a large temperature difference between day and night, which is conducive to the accumulation of organic nutrients to meet the buds and flower bud differentiation of the following year. Flowering fruit needs. In autumn, basal fertilization should be based on organic fertilizers such as circulatory fertilizers and soil excrements, and appropriate application of some quick-effect fertilizers.
First, pre-emergence topdressing is also called germination fertilizer, and the top-dressing northern jujube area is usually carried out in early April. Each plant is topped with 1.5 kg of phospho-potassium phosphate, especially the jujube garden where no basal fertilizer is applied in autumn. This top dressing is particularly important. Not only can it promote budding, but it is also very beneficial to flower bud differentiation and flowering and fruit setting. In the early stage of jujube growth, the competition for various organs is fierce. At this time, the normal growth and development of various organs are often affected due to lack of storage nutrients in the tree, resulting in poor flowering and fruit set and fruit development being hindered. Therefore, this topdressing not only ensures the normal growth of the jujube tree on the nutritional needs, but also help improve the yield.
Second, the flowering date jujube flower bud differentiation for the year, multiple differentiation, with the growth with the differentiation, long differentiation time, the number of differentiation. Therefore, jujube flowering quantity is large, flowering time is long, consumption of nutrients is more, and often due to lack of nutrition, resulting in a large number of flowering and fruit drop. The timely addition of tree nutrients during the flowering period can not only increase the fruit setting rate, but also benefit the growth and development of the fruit. During the flowering period, the method of foliar spraying of urea is often used, so that it is absorbed quickly and is conducive to timely supplementation of nutrition.
Third, to help fruit jujube after the first fruit drop, the fruit grows rapidly, the initial stage of cell division, mainly as an increase in the number of fruit cells, cell division in the late stop, showed an increase in cell size, but no matter the number of fruit cells The increase or increase in cell volume directly affects the size of the fruit or affects the level of yield. Adequate nutrition can accelerate the fullness of the split and increase the volume, such as fertilizer and water shortage, then affect the fruit's development and even fruit drop. Therefore, top dressing during fruit period not only directly affects the level of yield, but also affects the quality of the fruit. The top dressing is appropriate in mid-July. In addition to topdressing nitrogenous fertilizers, phosphorus and potash fertilizers are added to meet the demand of phosphorus and potassium elements in the development of jujube fruit and improve fruit quality.
Fourth, the top-dressing Top-dressing in August-September is particularly important for promoting fruit growth before maturity, increasing fruit weight and accumulating tree nutrients, especially for plants with more results. Late-stage topdressing not only benefits the increase in yield and quality, but also has a good impact on the growth and results of the following year. The top-dressing can be sprayed with nitrogenous fertilizer and combined with a certain amount of phosphorus and potassium fertilizers.
5. Before the harvest of basal fertilization in autumn, it is best to use basal fertilizer. At this time, the leaves still have high photosynthetic efficiency, sufficient sunshine, and high autumn and winter temperature, and a large temperature difference between day and night, which is conducive to the accumulation of organic nutrients to meet the buds and flower bud differentiation of the following year. Flowering fruit needs. In autumn, basal fertilization should be based on organic fertilizers such as circulatory fertilizers and soil excrements, and appropriate application of some quick-effect fertilizers.
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