According to statistics, Kyoho grape itself has the possibility of low yield, and this interference is mainly manifested in the trunk with growth hormone content higher than the standard value. Coincidentally, the excessive growth of Kyoho grape trees will also cause the content of growth hormones such as auxin to exceed the standard and reduce the fruit setting rate of Kyoho grape. Therefore, regulating the growth of Kyoho grape is the premise to improve the fruit setting rate. So how to adjust its growth?

1. In the case of shaping and trimming, it is recommended to be fan-shaped or X-shaped. The key to pruning is winter pruning. When pruning in winter, 4-5 buds are stored on each branch, and many buds of tender buds are controlled by old buds. Generally, the tree potential is controlled in the following specifications: before flowering, the leaves with matching flower spikes are maintained at the palm size of an adult, the left and right inflorescences are the palm size of an adult, and the fruit branches are basically maintained at 1 cm thick.

2. Flowering control Base fertilizer is generally applied before flowering, and Kyoho grape should not do this. As far as possible, topdressing basal fertilizer after flowering and before the growth of young fruits. In addition, fruit picking fertilizer is generally applied in the garden. If there are many flowers and fruits, and the tree is weak, N, P and K compound fertilizer 10-20Kg can be applied to restore the tree.

3. Pinch the spike tip before heading and dormancy flowering, and pinch some flower bones on the spikelet shaft with long shoulders, horizontally according to the size of the inflorescence, so that the inflorescence is good and the nutrients are concentrated during flowering, which can obviously enhance the fruit setting rate. In spring, due to the virtual prosperity of the giant peak tree, there are many buds on the branches and many buds on the branches, which will inevitably lead to uneven germination period. In this case, artificial methods should be used to relieve dormancy and ensure the orderly germination period.

4. Spraying "Zhuzhuangsu" on the leaves has a good practical effect on improving the fruit setting rate of Kyoho. Operation method: the application concentration is generally 500 ml/L, and the application concentration of vigorous garden can be increased to 600 ~ 800 mg/L.

Generally speaking, there are many factors that hurt the fruit setting rate of Kyoho grape, but its own genetic energy will be difficult to bear fruit after all. Therefore, we must master the methods to improve the fruit setting rate of Kyoho grape. The most important thing is to control the growth, find the problems and deal with them properly.