Different-place seedling south breeding method for tobaccos

Abstract

The invention discloses a different-place seedling south numerous added-generation breeding method for tobaccos, which comprises the following steps of: after the local bred seeds of the tobaccos are mature, locally sowing the seeds in a seed maturing area, preferably in late July or late September; raising seedlings at a different place for 55 to 65 days in a mode of float seedling; then transplanting the tobacco seedlings to a Hainan breeding area in a mode of air transportation and the like; and after the tobaccos are harvested, taking back the tobacco seeds to a local test area to performsowing. The method can avoid the influence of severe weathers such as typhoon and the like on breeding at the early stage of the traditional tobacco south numerous added-generation seedlings, meanwhile optimize the local tobacco production and staffing conditions of breeders, and shorten long-term on-business time of the breeders.

Description

technical field [0001] The invention relates to the field of crop breeding, in particular to a method for breeding tobacco in the south. Background technique [0002] Tobacco is one of the important economic crops in my country, and tobacco varieties are an important material basis for tobacco production. Speeding up the pace of variety breeding is an urgent requirement for tobacco breeders in the new century. Sanya, Hainan, my country has a unique tropical climate and a beautiful ecological environment. It is known as a "natural large greenhouse" and a "green gene bank". [0003] In the southeast tobacco area of ​​my country, such as the south Anhui tobacco area in Anhui Province, the field production of tobacco is generally sown at the end of December and the beginning of January, and the seeds mature at the end of July, that is, the full growth period is about 210 days. Its southern breeding time can only be fixed as August-December, that is, about 150 days, which is al...

AI Technical Summary

Problems solved by technology

The Chinese invention patent application with the patent number of 200710077967.X discloses a technology of adding and substituting tobacco for southern propagation. In this patent, the sowing time for southern propagation is around October 1, but it is obvious that the sowing time around October 1 cannot be planted on October 1 of the following year. month seed ripening

For example, it is possible to sow seeds in Hainan earlier than early August. However, before October, typhoons often occur in Hainan Province. The management of tobacco seedlings is cumbersome and complicated, and the technical requirements are very high. The strong wind and rain are extremely harmful to tobacco seedlings. unfavorable, even devastating

In addition, because tobacco breeding technicians have been transferred to Hainan for a long period of time to raise seedlings, and before October is the critical period for tobacco yield and quality statistical samples to be collected, evaluated and tested, this is even more difficult for the small-handed tobacco breeding team. nervous