Splitting scion method can be used to cut the scion into "wedges", quickly cut the rootstock into small pieces about 5 cm from the ground, then split it, insert the scion into the split place, align with the formation layer, tie it tightly with plastic tape, then shade it for about 50%, avoid the wind slightly, and sprinkle more water on the ground to prevent the scion from wilting.
Water the topsoil after drying, and don't apply fertilizer for the time being.
When the scion buds grow to 5 cm, remove the plastic tape and gradually put it in a sunny place to strengthen the management of fertilizer and water.
Rose: Before budding in spring, it is best to use rose as rootstock, which is basically the same as the thickness of scion. If not, just align one side when grafting. The key is to arrange the cambium. Splitting scion method can be used to cut the scion into "wedges", quickly cut the rootstock into small pieces about 5 cm from the ground, then split it, insert the scion into the split place, align with the formation layer, tie it tightly with plastic tape, then shade it for about 50%, avoid the wind slightly, and sprinkle more water on the ground to prevent the scion from wilting. Water the topsoil after drying, and don't apply fertilizer for the time being. When the scion buds grow to 5 cm, remove the plastic tape and gradually put it in a sunny place to strengthen the management of fertilizer and water. Rose: The survival rate of bud grafting far exceeds the other two grafting methods. As long as the best grafting time is mastered, the temperature during grafting is around 18-25℃ and it doesn't rain. Scions should choose old branches, almost all of them can survive, and few of them are not. However, the survival rate of the other two grafting methods is very low. The analysis shows that the xylem and phloem of Chinese rose are not easy to separate after autumn, and the operation is simple when cutting buds with embedded buds, and the cut buds are complete, smooth and fresh, which is the most fundamental reason for the high survival rate. 3. Summary 3. The grafting survival rate of1rose is greatly affected by the grafting period. The best grafting period is from early September to mid-June, and the survival rate is the highest. The optimum temperature of grafting is 18-25℃, and grafting should be carried out on a sunny day without rain. 3.2 Chinese rose grafting, the survival rate of different grafting methods is very different. The highest survival rate is bud grafting. In this grafting method, mature and full branches should be selected as bud strips. When grafting, the bud position is slightly larger than the bud piece. After inserting the bud, it should be noted that a narrow rhizome cortex must be exposed at the upper end of the bud to prevent the newly grown callus from popping out of the bud. The film should be properly tied, which not only prevents the buds from moving inward, but also prevents the moisture from rising too tightly and affecting the survival. 3.3 Four weeks after grafting, if the buds are green, the petiole will fall at the touch, and the callus will be full of buds, it is necessary to untie and cut the anvil to survive. Unbinding is best done on cloudy days without rain, especially in the afternoon. A week after unbinding, the bud is still green and can be cut into the anvil. The position of anvil cutting should be above the bud position 1.5 cm, and the second anvil cutting should be carried out after the bud is pulled out, and this time the anvil cutting position is above the bud position 1cm. After the rootstock is cut, the leaf buds on the rootstock are pulled out one after another, which should be pulled out in time to avoid consuming nutrition and affecting the growth of grafted buds. 3.4 Pay attention to fertilizer and water management and pest control, especially the control of downy mildew and aphids, and carry out reasonable shaping and pruning as needed.