How does yang mei produce high fertility? Please
Fertilizing yang may can be found in the following methods:
I. Rational fertilization
The fertilization of yang mei should take into account soil and tree nutrient levels and yang mei's need properties. The first is yang mei's fertilizing properties, with attention to the use of nitrogen, potassium fertilizer, which is more demanding for adult trees. Potassium fertilizer application has had a better effect on the quality of fruit. The low demand for phosphorus, under-utilized or excessive amounts of phosphorus can have adverse consequences, with too many results in a given year, and even all of the fruits are deformed, rigid, small fruit, acids, and of poor color. As was the case in the early 1980s, zhejiang yuya suffered serious losses as a result of the extensive overuse of phosphorus fertilizer. Too few are not conducive to splitting the buds and influencing the outcome. This is followed by soil conditions, with lower nitrogen, phosphorus and potassium levels, 0. 09 per cent, 0. 04 per cent and 0. 047 per cent ~0. 0056 per cent measured in soil nutrients at the yangmei park in zhejiang. Yang mei is planted on hill slopes, with erosion of topsoil and only 40 per cent, 20 per cent and 30 per cent of nitrogen, phosphorus and potassium fertilizer respectively. For this reason, actual fertilization should be greater than theoretically. Moreover, considering the level of nutrients in the tree, the growth of the tree is strong, the accumulation of nutrients is high, the growth of nutrients is weak and the accumulation of nutrients is low. As a result, yang may fertilizes with roots requiring fertility properties, tree nutrient levels and soil conditions, from the point of view of balancing tree nutrients to a reasonable ratio. The three-factor ratio for yangme and the ratio for potassium nitrogen phosphorus is 0. 5 = 2. 6. Fertilization should be determined by a combination of factors such as species, tree age, growth and outcome, and fertilization in the previous year and land conditions。
Ii. Fertilizing early trees
The purpose of early childhood trees is to promote growth and quickly to form productive crowns. Thus, in addition to the application of base fat before planting, during the march-august growth season, fat should be followed up many times and be dominated by quick-effect nitrogen fertilizer, such as urea, or compound fertilizer with appropriate quantities of potassium nitrogen phosphorus. After the new tree is active, it is applied in the first half of spring, summer and autumn, and urea is generally administered in the first half of its life. Due to the low resistance of the young tree, the soil is required to have sufficient water to be applied before and after rainfall, or to water. After three years of life, each plant is increased in fertilizer use with an appropriate amount of potassium phosphorus fertilizer. For example, urea is applied from 0. 3 to 0. 5 kg and grasswood ash from 2 to 3 kg, coke ash from 5 to 10 kg or potassium sulphate from 0. 1 to 0. 2 kg. At the end of the fertilization process, care is taken to reduce the amount of potassium added by nitrogen to control growth and promote results. Fertilizers are mostly applied in circular and disc-like fertilisation, promoting the extension of the root system outward and expanding the tree canopy。
Iii. Outcome tree fertilization
As a result, trees are targeted for high, stable, high quality and efficient production. The principle of fertilization is to reduce nitrogen-controlled phosphorus by potassium. Usually two to three fertilisations throughout the year. The first was in february-march, before the beginning of the chrysanthemum cycle, with the application of nitrogen fertilizer, to meet the nutrient needs of yang mei spring, flower and fruit growth; the second was applied in mid-may, with quick-effect potassium fertilizer, to supplement the nutrient demand for fruit growth and development and to improve the quality of fruit; and the third was followed by organic fertilizer in june-july, with the timely supplementation of tree body nutrients with fast-acting nitrogen fertilizer, with the third being about 30, 30 and 40 per cent, respectively. Two fertilizers were applied throughout the year, the first fertilization before the first bud, about 40 per cent fertilization, and the second poaching followed, about 60 per cent。
Iv. Outcome tree fertilization
The results of yang mei's years and years should vary in the application of fertilizers, which generally result in a high number of trees in old age, high nutrient consumption, a lower incidence of springs and summers, and a weaker post-harvest tree. In addition, in may, fertilizers and foliage are to be pursued. The small number of trees and the light burden of trees in their early years should be avoided, and excessive spring production should lead to the drop of flowers, affecting production in the current year. The application of fertilizers can be applied less or less fertilized than in the older trees, and subsequent fertilization will depend mainly on the direction of the tree。
V. Electronic finding technology
In recent years, extrafacing has become more common on yang mei, mainly in fruit-producing long-term applications. In the case of a flower spray of 0. 2% boron, long-term urea of 0. 2% urea and 0. 3% potassium phosphate or high-efficiency rare soil fertilization of 1,200-1500 times, etc. In fruit production, it is appropriate to promote the growth of leaf blades, improve light co-operation and improve the quality of fruit, generally by applying between one and two times, if too many times, which can lead to excessive nutrient growth and affect the quality of fruit. (b) deficiencies and their correction: on the one hand, the soil is thinner and more easily washed by rain as yang mei is planted on the slopes; on the other hand, management is thicker and less weight is given to fertilization; and on the other hand, there is deficiency in yang mei's area. Young plums suffer from a small yellowing of their leaves, poor growth of their branches and weak trees, resulting in reduced yields or years of age; short phosphorus displays, reduced growth of their roots, smaller leaves, lack of light, and, in serious cases, early fall of leaves, poor foliage, affecting yields and quality; small fruit, colour differences, poor quality and low yields in cases of lack of potassium; weak growth of trees, small leaves of branches, fresh stubbles, poor flowering and severe flowering. In particular, yang mei lacks sensitivity to boron. When the effective boron content in the soil is 0. 09 ppm, it shows the symptoms of boron deficiency. The foliage content is normal at 20 ppm-80 ppm. Nitrogen, phosphorus and potassium in general are not fertilized by soil or combined with leaf spray. In the event of a lack of boron, it is possible to spray 0. 2% urea plus 0. 5% urea and 0. 3% potassium phosphate 1 to 2 times between the onset of the bud and the flowering period, or to sow in winter (november) around 50 g per spa。
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