Key points of management of planting pomegranate in summer and autumn

Summer and autumn is the most vigorous period of pomegranate growth, but also its flowering period. Its management should pay attention to the following technical links.

1. Fertilization For young trees that are not mature, apply fertilizer once after two-thirds of the flowers and about one month before the fruit matures. For trees that have become mature, in addition to the above two fertilizers, it is necessary to apply fertilizer at the initial stage of germination and bud. The fertilizer types are nitrogen and phosphorus fertilizer in the early stage, potassium fertilizer in the late stage. Fertilization amount should be determined according to the number of results, less results, fertilization amount can be less, and vice versa more. 2, summer and autumn renovation pomegranate is a very light-loving tree species, the branches of the crown distribution should be sparse and dense, so that both inside and outside can be ventilated and transparent, can bear fruit. On the basis of winter and spring renovation, it is necessary to pick the core in summer, cut short or remove the tender tip of the vigorous shoot, and pay attention to wiping the bud, remove the redundant bud, so as to reduce the competition for nutrients, and at the same time, it is beneficial to the reasonable distribution of branches and leaves, and is conducive to ventilation and light transmission. 3, flower protection and fruit thinning pomegranate flowers for hermaphroditic flowers, pistil abortion rate is higher, the general rate of complete flowers is only 10 - 25%, so the fruit set rate is relatively low. The flowering period of pomegranate lasts for more than one month. According to the flowering time, pomegranate can be divided into first crop, second crop, third crop and last crop. The complete flower quantity and fruit setting rate of the first three crops determine the yield. The fruit of the first crop flower is larger in fruit shape, while the fruit of the late flower is smaller in fruit shape. Therefore, if we want to bear more fruits and bigger fruits to achieve high yield and good quality, we must increase the number of complete flowers and fruit setting rate of the first and second crops. Therefore, the degenerated flower buds should be thinned in time on the basis of rational fertilization and seasonal pruning. The difference between perfect flowers and degenerated flowers lies in the fact that the ovary of perfect flowers is relatively plump, shaped like peanut, and the pistil is higher or flat than the anther of stamens, while the ovary of degenerated flowers is thin, shaped like trumpet, and the pistil is lower than the anther. 4, the main pest control pomegranate diseases are mainly dry rot disease and early leaf disease. Summer and autumn such as disease found, before flowering can be used Bordeaux solution, flowering can be used Tobu Jin solution, after full flower to young fruit expansion period can be used to kill alum cloth or Tuijunte spray, every 7 - 10 days spray once, continuous spray several times, in the fruit picking before 1 month to stop medication. In addition, bagging at the young fruit stage also has a good effect on alleviating the disease of dry rot. The main pest of pomegranate can be killed by sweet and sour liquid in eclosion period, and can be controlled by strobilurin solution in incubation period.