Method for grafting and cultivating salt resistant type hibiscus nursling by taking hibiscus hamabo as wildstock

Abstract

The invention relates to a breeding method for grafting and cultivating other types and breeds of hibiscus economic and ornamental plants by taking an extremely salt-resistant hibiscus hamabo as a wildstock to improve the salt resistance of scion. The pot experiment proves that the growth vigor of hibiscus which is grafted and propagated by taking the hibiscus hamabo as the wildstock is exuberant,the grafting survival ratio is high (above 90 percent), the hibiscus is resistant to the soil salt above 8 thousandth, but the hibiscus propagating by cuttings is moderately damaged by 4 thousandth soil salt. The hibiscus plant after being improved can be popularized to be cultivated and applied on the wide coastal shoal, thereby improving the utilization and yield of the land resources on the coastal shoal; at the same time, the breeding method has the great significance on enriching the ecological landscape of the coastal shoal and improving the ecological environment of the coastal shoal.

Description

Technical field: [0001] The technical field of directed cultivation of trees, the present invention relates to a method for directional cultivating salt-tolerant Hibiscus species and varieties of high-quality economical and ornamental trees by grafting technology using the extremely salt-tolerant plant Hibiscus seaside as a rootstock. Background technique: [0002] Various coastal saline soils are widely distributed in the coastal areas and island coasts of about 18,000 km in the coastal provinces, municipalities, and autonomous regions of my country. The coastal saline soils are rich in soluble salts, and the salt content of 1m soil layer is generally 4g kg -1 Above, the highest can reach 20g·kg -1 The distribution of salinity in the upper and lower soil layers is basically the same. The content of soluble salt in the soil in the southern coastal areas is lower than that in the northern coastal areas, and the salt content in 1m soil layer is generally 3-12g·kg -1 . With ...

AI Technical Summary

Problems solved by technology

During the application and cultivation of Hibiscus plants, people found that the plants of this genus generally have a certain salt tolerance, especially seaside hibiscus and yellow hibiscus, which can withstand long-term immersion in seawater and grow normally, while seaside hibiscus and Hibiscus are typical subtropical distribution plant species. They are naturally distributed in Zhejiang, Fujian and Guangdong coastal areas. Due to the inhibition of poor cold resistance biological characteristics, the area of ​​popularization and application in coastal saline-alkali land is limited.