First, early basal fertilizer. As the greenhouse apricot tree grows earlier, the ground temperature is lower, the root growth time is short, the growth is slow, and the nutrient absorption capacity is poor. Therefore, the base fertilizer application time should be advanced to late summer to early autumn. After this period of application, the rapid root recovery, fertilizer is absorbed and utilized early, can increase the storage of nutrients in the tree and the quality of organ construction, laying a good foundation for the results of flowering in the coming year. Fertilizer applied should be mainly organic fertilizer supplemented with appropriate amount of quick-effect compound fertilizer. Organic manure requirements are fully decomposed in order to exert the fertilizer effect as soon as possible. Fertilizer application amount is 20% to 30% more than open field cultivation. Water after fertilization.
Second, increase the number of foliar spray fertilizer. The apricots in the greenhouse are germinated early and the leaves grow for a long period of time. The function of the apricots is weakened and prone to premature aging. Therefore, the foliar spraying should be strengthened to increase the physiological activity of the leaves and enhance their assimilation. After the beginning of autumn, it is usually sprayed once every 10 days or so and sprayed 5 to 7 times. Spray fertilizers are mainly composed of high-activity organic compound liquid fertilizers such as amino acid compound micro-fertilizer, titanium micro-fertilizer, and rare earth micro-fertilizer, and can be used alternately for various fertilizers.
Third, increase the amount of apricot trees in the fall. In the early stage of growing apricots, the photosynthetic photos of the apricot trees are relatively weak, and the humidity and temperature of the greenhouses are high. This can easily lead to leggy, unstable tree vigor, and canopy closure, affecting the yield and quality. In the late growth period, the amount of branches and leaves is too large and the ventilation and light transmission are poor, which is not conducive to the accumulation of nutrients. Therefore, the annual pruning task should be completed during the growing season to reduce the amount of winter pruning. It is an effective measure to stabilize the tree potential, strengthen the tree, and improve nutrient reserve. On the basis of pruning in spring and summer, after appropriate lengthening of shoots from August to September, appropriate upright branches and dense branches were reclaimed, thin and thin branches were retracted, and long fruiting branches were short-cut. At the same time, branch opening angles were adjusted and the branch layout was adjusted. The quantity of foliage and leaves are used rationally to fully improve the light-transmitting condition of the remaining branches, promote the accumulation of nutrients, and achieve the purpose of strengthening the tree and stabilizing the environment.
Fourth, strengthen pest control. In September, Ye Hao’s prevention and treatment can be used to spray 2500 times of extinction; 1 or 2 times of bactericide is used to control leaf diseases. After the leaves fall, the dead branches and leaves are promptly removed to reduce the source of the disease and reduce the wintering base of the pests.
Fifth, reasonable irrigation and drainage. Apricot trees in the greenhouse should be properly controlled in the autumn irrigation, when drought, watering with small water, to avoid excessive water, autumn rain encountered too many years, it is necessary to do a good job of flood prevention, to prevent excessive water caused by leggy, affecting the accumulation of nutrients.
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