Kyoho grape is tetraploid, and its female parent is Pinus sylvestris var. mongolica. Mongolian almond has the characteristics of falling flowers and fruits. The father is a tetraploid bud of Luo Qi, and there are obvious phenomena of falling flowers and fruits. It can be said that Jufeng fully inherited the characteristics of its father's large fruit, high sugar content and strong disease resistance, but at the same time it inevitably inherited the shortcomings of flowers and fruits. From the genetic point of view, Kyoho grape is genetically damaged. Although there are other external factors, such as poor pollination, malnutrition and pipelines, it will still bear fruit.

Although there are many reasons for the low fruit setting rate of Kyoho grape, it is not without solution. For example, in order to improve the fruit setting rate, some growers treat the ear with plant growth regulators, but it is easy to have serious problems such as large and small fruits, too dense fruits, artificial fruit thinning, late ripening and serious fruit cracking. So it is very important to master the method. It is understood that the Kyoho grape itself may have a physiological reason for low yield, which shows that gibberellin and other hormones in the tree are higher than normal. Coincidentally, the growth of Kyoho grape trees will also lead to high levels of hormones such as gibberellin.

As a result, the fruit setting rate of Kyoho grape decreased. Therefore, controlling the growth of Kyoho grape is a necessary prerequisite to improve the fruit setting rate. So how to control its growth? Wait a minute. problem Therefore, the difficulty of fruit shaping and pruning of Kyoho grape can be imagined, and it is suggested to adopt fan-shaped or X-shaped shape when shaping. When pruning, mainly in Dong Jian, Dong Jian, 4-5 buds are reserved for each branch, and the old buds are used to control the germination of new buds. The tree potential is generally controlled in the following standards: the flower before flowering corresponds to the palm size of the adult leaf, the inflorescence length is two punches in the adult, and the fruit base is 1 cm thick.

Generally speaking, nitrogen fertilizer should be applied to grapes before flowering, but Kyoho grapes should not do so. Try to apply nitrogen fertilizer after flowering and before the growth of young fruits. In addition, fruit picking fertilizer is generally not applied in the park. If there are fruits, compound fertilizer of nitrogen, phosphorus and potassium can be applied to restore tree vigor. Pinch the tip of the spike before flowering, and pinch a few buds on your shoulders with a long stick. Depending on the inflorescence size, good inflorescence and concentrated nutrition during flowering can obviously improve the fruit setting rate. In spring, we have more branches, because the huge peaks are empty.