Rootstock is closely related to the yield, quality, crown size, stress resistance and life span of trees. Shatangju (sugar orange) is mainly used in lime and red orange (produced in Jiangxi, Sichuan, Hunan and other provinces) and bitter orange, and some use red lemon.
1. Jiangxi Red (Zhu) Orange
It mainly produces three lakes in Jiangxi, and in recent years, it has also used Sichuan red oranges from Jiangjin and other real estates in Sichuan. The rootstock grafted with this rootstock has good compatibility, moderate tree vigor, early fruit yield and excellent fruit, and is suitable for planting in paddy fields and hilly areas. Sichuan red orange rootstock is especially suitable for mountain orchards with slope below 25 degrees.
2. Lime
Guangdong soft branch lime is an excellent rootstock. It has a good affinity with Shatangju (Tangtangju), fast growth, vigorous growth, developed root groups and many fine roots. The planting effect in flat land, hills and mountainous areas is good, the fruit quality is excellent, and the drought resistance in mountainous areas is strong. However, in order to achieve early fruiting and high yield, measures to promote early fruiting and flowering should be implemented.
3. Fructus Aurantii
Fructus Aurantii is an excellent Shatangju with small rhizome, early fruiting and high yield. Grafting showed that the fruit was orange-yellow, with excellent quality, developed root groups and many fibrous roots. Suitable for planting in paddy fields, flat land and hilly areas. Among them, small-leaf citrus seedlings (sugar orange) are characterized by thick roots, short stature and compact crown, which are suitable for high-density planting.
4. red lemon
Red lemon and grafted sugar orange (sugar orange) have good affinity. After planting, the fruit grows fast, the first fruit yield is high, the root system distribution is shallow, the absorption fertility is strong, the drought resistance is slightly poor, the fruit is large, the skin is thick and the color is good, but the fruit quality of the first fruit tree is slightly poor. Suitable for paddy field and peaceful cultivation.
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