In hot areas, small sheds or T-hedges are generally used for single stems and fewer main vines. The frame is higher than the ground, which is convenient for ventilation and light transmission and reduces the damage of diseases and ground radiation to leaves and fruits. Pruning is one of the important measures to ensure the output of the year. Winter occurs after defoliation, with 8- 12 nodes for long branches, 5-7 nodes for middle branches and 3- 1 node for short branches. Summer pruning is to remove the redundant buds in the germination stage, and coat a layer of calluses at the pruning mouth. Before flowering, too many inflorescences should be sparse, the big ones should be kept small, and the strong ones should be kept weak. When the branches and vines grow to a certain extent, they should be tied to the surface of the frame, and the tendrils should be removed in time to reduce nutrient consumption. Results 5 ~ 7 leaves were left before the inflorescence to improve the nutritional status. Grape has a high fruit setting rate, so it can be thinned appropriately to make the fruit size uniform, otherwise abnormal fruit and small fruit will appear.

Multiple result branching measure

(1) Use the auxiliary tip to bear fruit many times a year. The tropical climate is warm, the growth period is long, the buds are early, the secondary buds germinate many times, the inflorescence primordium is easy to form, and the grapes can be induced to bear fruit many times a year. Choose suitable varieties, such as Kyoho, white banana and so on. 15- 20 days before flowering, after 4-6 leaves are left on the fruiting vine for coring, 1-2 secondary branches are promoted to germinate at the top, and the rest are erased to form inflorescence primordium; When the secondary tip is 5-6 leaves long, leave 1-2 leaves for forced coring; Secondary buds appear after coring, and when it grows to 3 ~ 4 leaves, leave 1 leaf for coring; The secondary branches are treated three times in the same way, and after many times of coring treatment, the secondary branches can bear fruit many times a year.

(2) Artificial defoliation forces new buds to germinate. After the first fruit picking, in August-September, the leaves are pruned and forcibly picked, or 1.035kg/L stone sulfur mixture is sprayed on the branches and leaves, and 1%-5% sodium pentachlorophenol is added to make the leaves fall off. At this time, the temperature is very high, which can make the new buds sprout, blossom and bear fruit that year and mature in the first half of June. Because twice a year, fertilizer and water management should keep up in time.

5. Spraying Guoxing plant nutrients can further improve the yield and quality of grapes. According to the biological and physiological characteristics of grapes, it is the best economic benefit to use it five times in vineyards with good management level in normal years. The five-time use period is:

The first time: in the growth period of new shoots, supplement nutrition, promote the full development of flower organs, reduce residual flowers, overcome the problem that flowers fail to bear fruit or fall off seriously due to insufficient nutrition and poor development, and lay a good foundation for improving fruit setting rate.

The second time: flowering, which can enhance the pollination and fertilization ability and significantly improve the fruit setting rate. Especially for varieties with slow pollen tube elongation such as Kyoho, the effect is more obvious. However, attention should be paid to thinning out too many fruit grains in time to make the whole ear fruit grains even and tidy.

The third and fourth times: the growing period of berries is the key period for the formation of yield and quality. It can improve the physiological function of leaves, speed up the light and speed, promote the accumulation and transformation of photosynthetic products of fruit grains, and promote the early expansion, early coloring and early maturity of fruit grains, thus achieving the goals of high yield, early maturity and high quality.

The fifth time: berry ripening, used when grapes are to be picked, can delay leaf senescence, maintain its high physiological function, delay defoliation, make branches fully mature and restore tree vigor. This is especially important for high-yield orchards and weak-tree orchards.