Small-grain hybrid seed production method

Abstract

The invention discloses a small-grain hybrid seed production method. In a sowing interval step, a rice restorer line is adopted as a male parent, a rice small-grain sterile line is adopted as a femaleparent, male parent and female parent direct sowing is adopted for the male parent, and mixed sowing in throw-planting trays, and direct sowing is adopted for the female parent; 0.6jin of dried riceof the male parent is sowed to per mu of a field, 2.5jin of bud rice of the female parent is sowed to per mu of field, and mixed sowing is performed between 22th, January and 30th, January; before sowing of the female parent, field leveling is required; during sowing, requirements on no surface water, peripheral furrowing and middle carriage need to be met; after male parent and female parent direct sowing, closed weeding is performed when the field is free of water on the second and third days, and the field is kept out of water for at least three days; an initial heading stage of the femaleparent is controlled to be 2-4 days ahead of that of the male parent. The method is low in labor consumption and simple and convenient to operate, male parent and female parent mixed harvesting can berealized, and simplified seed production is realized while hybrid seed yield increase and production cost reduction are guaranteed.

Description

technical field [0001] The invention relates to rice seed production, in particular to a method for producing small-grain hybrid seeds. Background technique [0002] With the market operation of hybrid rice seeds, seed prices have been on the rise year after year. The main reasons for the high price of seeds include: first, the competition and monopoly of variety management rights enable enterprises to set prices independently; second, the current seed law protects seed intellectual property rights, and combines the protection of variety rights with the management of seed production and operation. tightly bound. The support of national policies and the imbalance between supply and demand between different varieties have caused some varieties to sell at sky-high prices; third, factors such as cross-regional production of seeds, increase in seed production costs, and natural disasters have caused a decline in seed production. Affected seed prices. [0003] Hybrid rice seed ...

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a seed production method for small-grained hybrids that is easy to operate, high in efficiency, and effective in addressing the problems of hybrid seed production that requires a lot of labor and high seed cost in the above-mentioned prior art to improve the production of small-grained hybrids. The Yield, Quality and Production Cost of Type CMS Hybrid Seed Production

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