There are many factors that affect the survival rate of grafting. They are summarized as follows:

1 Scion affinity with rootstock. That is, after grafting the scion and rootstock, normal healing and growth and development ability are the most basic conditions for grafting survival. In general, kinship is similar, affinity is stronger, kinship is farther, affinity is weak, and even incompatibility.

2 scion and rootstock viability. This is an important factor that affects the survival rate of grafting. The seedlings are robust, well-developed, their viability is strong, and grafting is easy to survive; weak seedlings and leggy seedlings are weak in vigor, and grafting is not easy to survive.

3 The impact of environmental conditions. Temperature, humidity, light, etc. also have a greater impact on the survival rate of grafting. In general, the higher temperature and humidity after grafting is conducive to wound healing, and the survival rate is high; low temperature and dryness are not conducive to wound healing, and the survival rate is low. In the first 2-3 days after grafting, proper shading can reduce seedling dehydration and wilting, which is beneficial to survival. However, too strong or too light can cause too much water loss due to dehydration, or decrease the survival rate due to high humidity and mildew. .

4 Grafting technology and management after grafting also have a great influence on graft survival rate. No matter what method is used for grafting, the blade used for the incision should be clean during operation, the incision should be straight, the cut surface should be tight, and the fixation should be firm, not loose, not displaced, and not damaging the cotyledons, scion and leaves, etc. will improve the survival rate. Planting and management of seedlings after grafting should be meticulous to increase the survival rate.

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