Mangoes usually bloom from January to January, and mature from May to July. This happens to be the time when many other fruits are abundant. As a result, prices have plummeted, and fruit growers often lose everything. Conversely, in the off-season, prices are increased due to small quantities, but consumers are spending more. In the absence of goods, the income of farmers is extremely limited. Therefore, if horticultural farming techniques can be applied to regulate the mango production period, increase the off-season production as much as possible, and reduce the ample production period (June-August) supply, the selling price of mango will become more reasonable and stable, so that the producers and consumers Two Montjuries. At the same time, proper adjustment of the maternity period can directly reduce storage costs, and there are fresh and high quality fruits available to consumers. First, the premature delivery of mangoes has a habit of flowering from time to time. Generally, they are open to mature shoots of old plants. The period varies from August to November. Therefore, how to promote the rapid transformation of shoots from vegetative growth to reproductive growth is a prerequisite for the promotion of flower bud differentiation. The methods and steps for the early stage of delivery are as follows: 1. In order to plant seedlings with more than 15 years of age, stronger tree vigor is preferred. The fruit on the plant must be harvested earlier, and when the fruit is not hung on the tree, it can promote vegetative growth and quickly grow new shoots and shoots. When the fruits of the current year are harvested early in April, compound fertilizer No. 5 should be applied at this time, and about 10 to 15 kilograms per plant, depending on tree vigor development. 2. When the shoots are turned green and mature quickly, the plants are sprayed with high-phosphorus potassium fertilizer, once every 10 days, three times in succession, to promote the rapid transformation of new shoots into reproductive growth. At this time, pesticides can be mixed to prevent new shoots. Dust and anthrax hazards. 3. In June, the trunk of the plant was treated with ring-shaped inscriptions, that is, at the trunk 50 centimeters from the ground, a circular saw was wounded in a circle, and the circled joints must be joined to deepen the phloem without damaging the xylem. , but do not ring peeling treatment, it will lead to difficult to heal, the tree vigor will soon be weak, not easy to recover. In the case of the Aiwen breed, ring scratches and ring peeling treatments are not allowed. After many years of observation, about 30% of the plants will become weak or die after treatment. In April and July, 39.5% of Ethrel auxin was mixed with 2,500 times auxin and 100 times of high-phosphorus and potassium-containing liquid fertilizer was sprayed every 10 days for three times. However, it must be treated at dusk or cloudy days to avoid decomposition of auxin by sunlight. Affects efficacy. If the above treatment is effective, it will start early in October to early November, but the rate is not very high, about 20%. 5. After flowering in October, due to the late fall, the temperature is around 25-28°C, which is the peak season for pollinator activity. It should be well protected to promote pollination and help normal results. However, in the dry season in the southern part of the country, it is necessary to carry out drip irrigation or diversion irrigation to promote pollination, help normal results, prevent boron deficiency disease and promote the growth of young fruit. 6, when the young fruit in November, it is appropriate to apply nitrogen fertilizer to promote rapid growth of young fruit. Due to the winter time, the development of the fruit is very slow, and at this time, fruit peeling should be performed as soon as possible, because the fruit thinning period is short and the operation is slow and laborious. The best place to stay fruit is the center of the ear, and only 1 or 2 fruits can be left in each ear. Otherwise, the fruit has a long growth phenomenon. The small fruit that is dredged can be used as a lover fruit. 7. During the fruit hypertrophy in February, it is the season with the strongest northeast monsoon. Fruits are prone to infection with melasma due to external injuries and rain. They should be prevented as soon as possible, because if they cannot be treated after being infected, they will lose their value. 8, after the love of mango to treat premature delivery, from fruit to fruit during the hypertrophy, it is easy to cause irregular cracking fruit, pay attention to soil moisture control. At the same time, anthrax and black spot must be prevented. During the period of fruit hypertrophy, due to low temperature and less sunshine, the color of the fruit can not be revealed. At this time, the branches should be trimmed, the ventilation should be well maintained, the sunshine should be sufficient, and the phosphorus fertilizer should be applied to the foliar fertilizer to promote the production of color. . Second, the species introduced from the United States will be postponed to the date of production. After the spikes have suffered cold damage, they will have the characteristics of re-opening the second flower. When the results are normal, this secondary flowering habit is not valued because it is not related to yield. However, if the flowering spikes in the normal flowering period are harmed by cold currents and rain, the application of the technique of flower spike removal, delaying the flowering period and avoiding the cold current can effectively stabilize production or increase production and prolong the production period. Methods and procedures for postponing delivery: 1. During the period of flower picking: Aiwen varieties in “Lingchun†(February 4th), Kate and Sacred Heart varieties should be deflowered in “rainwater†(February 19), which can improve Flowering rate. 2. After fruit harvesting last year, 20% of fertilizer should be added to supply the fertilizer needed to make more flowers once. At the same time, it is necessary to select strong plants for defloration and increase the rate of re-inflorescence. 3, after flowering, some shoots will have new shoots and spikes grow together, it is advisable to remove the shoots immediately to prevent nutrient competition. After the regeneration flower grows, drip irrigation must be performed immediately to promote pollination and fruit hypertrophy. 4, after flowering, in the re-flowering and young fruit period should be sprayed 500 times the mixing of calcium chloride boric acid 400 times to prevent boron deficiency disease, spray can increase the pollen germination rate and reduce fruit drop rate. 5. The application of defloration technology delays the production period of the American species. The mangoes should be selected to meet the adverse environment of cold weather, rain, and frost during the flowering period. This can increase the rate of results. If there is a warm winter weather, do not Deflowering. 6, in the kind of mango does not open the second flower habits, can not be dealt with. 7. If three consecutive years of flower picking are used, the growth potential of the plants will be significantly weakened. The picking of flowers should be stopped for one year and nutrition management must be strengthened. 8. Other cultivation management methods are the same as general promotion methods. Applicable area: Subtropical
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