A kind of tobacco seed artificial assisted pollination propagation method

Abstract

The invention provides a propagation method for tobacco seeds by artificial supplementary pollination. The method specifically comprises the following steps of: seedling; ditching and applying base fertilizers according to a specification that every three rows serve as a tobacco strain belt; covering by a mulching film; transplanting according to a specification that every three rows serve as a tobacco strain belt; uncovering the film and topdressing; intertilling and earthing up; removing impurities and roguing; topping to control height of the tobacco strains in the middle row topped within 100-120cm and height of the tobacco strains in rows on both sides within 90-110cm; picking buds and leaving forks; and applying a fruit bearing fertilizer to promote flower-formation and preserve blossoms; preserving fruits and thinning flowers by artificial supplementary pollination, and collecting matured capsules. The method provided by the invention is simple in operation, low in input production cost and high in seed output. Compared with a conventional method, the propagation method provided by the invention has the advantages that the yield is improved from 5-8kg / mu to 18-27kg / mu, with the increase amplitude which is 3-4 times that of the conventional method.

Description

technical field [0001] The patent of the present invention relates to a method for propagating crop seeds, in particular to a method for artificially assisted pollination and propagation of tobacco seeds. Background technique [0002] Tobacco seeds are the premise and guarantee for the sustainable and stable development of tobacco leaves. At the same time as the production technology of tobacco leaves, the technology of tobacco seed propagation was born. Hubei Province is the main production area of ​​flue-cured tobacco, the largest Burley tobacco production area and the only Maryland tobacco production area. Among them, the annual planting area of ​​flue-cured tobacco is 700,000-900,000 mu, Burley tobacco and Maryland tobacco are 170,000-200,000 mu, and Yunyan 87 is Flue-cured tobacco is the main cultivated variety, and the planting area accounts for more than 70% of the total area of ​​flue-cured tobacco. The varieties used in flue-cured tobacco, Maryland tobacco, and ori...

AI Technical Summary

Problems solved by technology

In actual work, it was found that 30%-50% of Yunyan 87 tobacco plants have stamen filaments shorter than pistil stigma, and it is extremely difficult for pollen to fall on the pistil stigma after the anthers mature and split, resulting in more flowers blooming and low fruit setting rate , low seed yield

Therefore, aiming at the problem of low self-fertilization rate in some conventional species of tobacco, it is necessary to invent a method for artificially assisted pollination and reproduction of tobacco seeds, which is very necessary for increasing seed yield and reducing production costs

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