A Seed Production Method for Improving Vitality of Hybrid Rice Seeds

A hybrid rice, high vigor technology, applied in fertilization methods, horticultural methods, rice cultivation and other directions, can solve the problems of no enlightenment, inability to know cultivation measures, unpublished cultivation measures, etc., to promote the formation of seed vigor and shorten the overall cultivation. time, and the effect of reducing the labor intensity of rushing powder

Active Publication Date: 2020-06-23
HUNAN AGRICULTURAL UNIV
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  • Description
  • Claims
  • Application Information

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Problems solved by technology

The actual seed yield of II You 838 in Guidong and Suining was significantly higher than that in Yongan, and the seed vigor index of Guidong and Suining was significantly higher than that in Yongan, but no specific cultivation measures were announced. Therefore, those skilled in the art cannot know its concrete cultivation measure, do not have any enlightenment to the present invention

Method used

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  • A Seed Production Method for Improving Vitality of Hybrid Rice Seeds

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Embodiment 1

[0039] The applicant conducted relevant experiments in a hybrid rice seed production test base in Suining County in 2016. The test base is located in a hilly area with a large temperature difference between day and night, and the average daily temperature is about 27°C. During the test, the seed production method comprises the following steps:

[0040] (1) Region selection for hybrid rice seed production: select the above-mentioned hilly area as the cultivation land;

[0041] Matching and reasonable fertilization mode, one is to apply organic fertilizer and inorganic fertilizer together; the other is to apply fertilizer in a concentrated manner, that is, all organic fertilizer is applied in the form of base fertilizer, 90% of inorganic fertilizer is applied in the form of base fertilizer and tillering fertilizer, and 10% of inorganic fertilizer is applied according to Appropriate topdressing for rice growth;

[0042] Increase the ratio of the parent line, so that the proporti...

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Abstract

The invention relates to a seed production method for improving the vigor of hybrid rice seeds. A high-vigor seed production area is selected to perform hybrid rice seed production; wherein the bank ratio about parents is 2:9-12; a pre-flowering supporting fertilization mode is that organic fertilizers and inorganic fertilizers are applied cooperatively, wherein all the organic fertilizers are applied in the form of base fertilizer, 85-95% of inorganic fertilizers are applied in the form of base fertilizer and tiller fertilizer, and the remaining inorganic fertilizers are applied according tothe growth of rice; plant growth regulator is sprayed at a flowering stage, and the spraying amount is 300-1200 g / hm2; pollination is performed, the number of pollination days is shortened, and the pollination days are controlled to be 3 to 5 days; the plant growth regulator is sprayed during pollination and / or after pollination, vitality optimizer is sprayed; and after pollination is completed, harvesting is performed within the next 15 to 20 days. The method can effectively improve the seed vigor of hybrid rice seed production.

Description

technical field [0001] The invention relates to hybrid rice seed production technology, in particular to a seed production method for improving the vigor of hybrid rice seeds. Background technique [0002] Seed vigor is a comprehensive indicator, which refers to the comprehensive performance of seeds in terms of germination, emergence, and seedling capacity and characteristics, that is, seeds with high vitality germinate early, have a high rate of emergence and seedling growth, and have strong adaptability to harsh environmental conditions. In addition to being affected by individual development status and seed genetic characteristics, seed vigor is also affected by many external factors, including seed development conditions (nutritional conditions, maternal vitality, planting density, light, temperature, water and air conditions), and harvest time and Post-harvest seed drying measures, all of the above are limiting factors affecting the level of seed vigor. [0003] Chine...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00A01G22/22A01G7/06A01H1/02C05G3/00
CPCA01C21/005A01G7/06A01H1/02C05D3/00C05G3/00C05D5/00C05D9/02
Inventor 唐启源王晓敏郑华斌邓化冰
Owner HUNAN AGRICULTURAL UNIV
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