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Mechanical rice transplanting seed production method with male and female parents of hybrid rice in same machine and same body

A technology of parental and hybrid rice, applied in the field of machine-transplanted seed production of hybrid rice, which can solve the problems of too long time-consuming, labor-intensive planting, limited popularization and application, etc., and prolong the flowering period of the male parent , improve the quality of encounters, and promote the effect of flower encounters

Active Publication Date: 2020-10-02
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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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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  • Mechanical rice transplanting seed production method with male and female parents of hybrid rice in same machine and same body
  • Mechanical rice transplanting seed production method with male and female parents of hybrid rice in same machine and same body
  • Mechanical rice transplanting seed production method with male and female parents of hybrid rice in same machine and same body

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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 mechanical rice transplanting seed production method with male and female parents of hybrid rice in the same machine and same body, and belongs to the field of agricultural hybrid rice seed production. The method is based on a conventional rice transplanter with row spacings of 30cm, setting of row ratio of the male and female parents, sowing and seedling raising of the male and female parents according to different quantities, setting of planting route and simultaneous mechanical rice transplanting of the male and female parents are performed, so that simultaneous planting of the male and female parents by a conventional rice transplanter can be realized, hole seedlings of the male and female parents are different in quantity to meet specific seed production requirements, first heading differences in the first-stage and the second-stage of male parents is increased to prolong the florescence, the male and female parents are obviously distinguished, and the working of box dividing is omitted, so that the purpose of improving planting efficiency is achieved.

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, as a prerequisite for ration guarantee, must be guaranteed. Facing the trend of aging rural labor force and the possibility of no one farming in the future, to promote hybrid rice seed production must take the road of mechanized development. 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...

Claims

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Application Information

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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