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A kind of hybrid rice parental and homologous planting method for seed production

A technology of parental parent and hybrid rice, applied in the field of hybrid rice parent parent and same machine, can solve the problems of time-consuming, labor-intensive and time-consuming planting, and limited popularization and application, so as to promote flower encounter, The effect of prolonging the flowering period of the male parent and improving the quality of encounter

Active Publication Date: 2022-02-15
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is: the new rice transplanter and the 25cm narrow-row-spacing rice transplanter invented for the similar combination of seed production in the above prior art due to the same machine planting have narrow application areas, limited promotion and application in areas such as Sichuan, It takes too long to screen strong dominant combinations containing special genes, and it takes a lot of time and labor to plant with two rice transplanters. We provide a method of using a conventional rice transplanter with a wide row spacing of 30cm to carry out hybrid rice parental and same machine transplantation. method

Method used

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  • A kind of hybrid rice parental and homologous planting method for seed production
  • A kind of hybrid rice parental and homologous planting method for seed production
  • A kind of hybrid rice parental and homologous planting method for seed production

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Embodiment 1

[0034] A preferred embodiment of the present invention provides a method for seed production of hybrid rice with the same parent and same body, the specific steps are as follows:

[0035] 1) Set the parent-to-parent ratio: use a 6-row rice transplanter with a row spacing of 30cm to set the parent-to-row ratio to 2:8.

[0036] 2) Sowing of parents: According to the high-yield target of seed production, 65,000 seedlings are set per acre of basic seedlings of the female parent, and 9,000 seedlings are set per acre of basic seedlings of the male parent; the sowing amount of seedlings is calculated according to the average number of seedlings per unit area, Among them, the number of seedlings per unit area of ​​the first-stage male parent was 1.1 plants / cm 2 , the number of seedlings per unit area of ​​the second-stage male parent is 1.4 times that of the first-stage male parent, and the number of seedlings per unit area of ​​the female parent is 2.0 times that of the first-stage m...

Embodiment 2

[0041] A preferred embodiment of the present invention provides a method for seed production of hybrid rice with the same parent and same body, the specific steps are as follows:

[0042] 1) Set the parent-to-parent ratio: use 8-row rice transplanters with a row spacing of 30cm to set the parent-to-row ratio to 4:12.

[0043] 2) Sowing of parental components: according to the high-yield target of seed production, 70,000 seedlings are set per acre of basic seedlings of the female parent, and 10,000 seedlings are set per acre of basic seedlings of the male parent; the sowing amount of seedlings is calculated according to the average number of seedlings per unit area, Among them, the number of seedlings per unit area of ​​the first-stage male parent was 1.2 plants / cm 2 , the number of seedlings per unit area of ​​the second-stage male parent is 1.5 times that of the first-stage male parent, and the number of seedlings per unit area of ​​the female parent is 2.3 times that of the ...

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Abstract

The invention discloses a seed production method of hybrid rice with the same parental body and the same body, and belongs to the field of agricultural hybrid rice seed production. Based on the existing conventional rice transplanter with a row spacing of 30cm, the method sets the parental row ratio, the parental component sowing and raising seedlings, and sets the planting route. The number of hole seedlings is different to meet the special requirements of seed production, to increase the difference between the first and second phases of the male parent to prolong the flowering period, to clearly distinguish the parental parent, to save the work of drawing boxes and to improve the planting efficiency, etc.

Description

technical field [0001] The invention belongs to the field of agricultural hybrid rice seed production, and in particular relates to a method for hybrid rice seed production by machine-inserting both parental parents and the same body. Background technique [0002] The development of the hybrid rice seed production industry must be guaranteed as a prerequisite for food rations, and the development of hybrid rice seed production must be mechanized to promote hybrid rice seed production. The mechanization of sowing and planting is the first link in the mechanization of seed production, and the combination type that is easiest to realize is the combination of parents with similar sowing periods. In this regard, many scholars have carried out research, one is to overcome from the agronomic technology, such as introducing the bendazone sensitive (lethal) gene into the male parent or introducing the brown shell marker gene into the male or female parent or screening the grain type ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/22A01H1/02
CPCA01G22/22A01H1/02
Inventor 任万军陶有凤秦琴雷小龙李卉高云天周中林黄邦超
Owner SICHUAN AGRI UNIV