Grafted grapefruit trees should have excellent rootstocks and scions. The rootstock of pomelo is the best, and the rootstock of pomelo has strong affinity with the scion of pomelo tree. Scions should choose local excellent varieties, and it is meaningless to graft ordinary varieties of grapefruit trees.
The reason for choosing local varieties is to consider their adaptability to the environment. Local varieties are naturally more adaptable than imported varieties. It is best to choose pomelo trees with certain cold resistance, otherwise they are vulnerable to freezing injury.
Extended data:
Choosing the land to plant grapefruit is not strict with the soil. As long as the soil layer is deep and the drainage is good, it can be planted, but sandy loam is the best.
The field management of newly planted young trees needs sufficient water and fertilizer, and spraying new high-fat film can ensure that the above-ground water does not evaporate and the seedlings do not transpiration, isolate pests and diseases, shorten the slow seedling stage and accelerate the root development.
The specific requirements are that the soil layer is deep (60㎝) and fertile; The ph value of the soil is 5.5-7.0; The slope of the orchard is less than 25 degrees. Cultivated in hilly or low mountainous areas.