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Parent purification method, corn improved variety and corn seed production method

A seed and parent technology, applied in the agricultural field, can solve problems such as farmers' weak ability to avoid market risks, lack of enterprise investment confidence, and irregular market operations

Inactive Publication Date: 2018-11-02
ZHANGYE JINYUYUAN AGRI TECH DEV CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to frequent natural disasters and lack of attention to the construction of processing bases, the investment confidence of enterprises is insufficient, the market operation is not standardized, the mechanism of interest connection is not perfect, and the ability of farmers to avoid market risks is weak. The seed production area has dropped rapidly to the current level. Less than 6 667hm2

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0045] The mixed parents were bagged and self-bred in the first year, and individual plants with typical traits were harvested, mixed and threshed, and stored separately; in the second year, the bagged and self-bred seeds were propagated in isolated and safe plots. Strictly remove non-typical plants according to the growth and development period, and harvest the seeds of typical plants as original seeds; continue to propagate in isolated and safe plots in the third year, and harvest seeds as improved seeds;

[0046] Preferably, part of the seeds from the original seeds in the second year are planted in the experimental field, bagged and self-bred, and then propagated as original seeds in isolation, and the original seeds are expanded to improved seeds, and the cycle is repeated in turn.

[0047] Planting specifically includes: site selection: altitude of 1350m; annual average temperature of 7.60℃; ≥10℃ accumulated temperature of 3400℃; frost-free period of 120d; sunshine hours from ...

Embodiment 2

[0053] The mixed parents were bagged and self-bred in the first year, and individual plants with typical traits were harvested, mixed and threshed, and stored separately; in the second year, the bagged and self-bred seeds were propagated in isolated and safe plots. Strictly remove non-typical plants according to the growth and development period, and harvest the seeds of typical plants as original seeds; continue to propagate in isolated and safe plots in the third year, and harvest seeds as improved seeds;

[0054] Preferably, part of the seeds from the original seeds in the second year are planted in the experimental field, bagged and self-bred, and then propagated as original seeds in isolation, and the original seeds are expanded to improved seeds, and the cycle is repeated in turn.

[0055] Planting specifically includes: site selection: altitude of 1400m; annual average temperature of 7.50℃; ≥10℃ accumulated temperature of 3300℃; frost-free period of 130d; sunshine hours from ...

Embodiment 3

[0061] The mixed parents were bagged and self-bred in the first year, and individual plants with typical traits were harvested, mixed and threshed, and stored separately; in the second year, the bagged and self-bred seeds were propagated in isolated and safe plots. Strictly remove non-typical plants according to the growth and development period, and harvest the seeds of typical plants as original seeds; continue to propagate in isolated and safe plots in the third year, and harvest seeds as improved seeds;

[0062] Preferably, part of the seeds from the original seeds in the second year are planted in the experimental field, bagged and self-bred, and then propagated as original seeds in isolation, and the original seeds are expanded to improved seeds, and the cycle is repeated in turn.

[0063] Planting specifically includes: site selection: altitude of 1500m; annual average temperature of 7.40℃; ≥10℃ accumulated temperature of 3200℃; frost-free period of 140d; sunshine hours from ...

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Abstract

The invention relates to a parent purification method, a corn improved variety and a corn seed production method, and belongs to the technical field of agriculture. The corn seed production method comprises the following steps: land selection, parent purification, sowing time setting, sowing space setting, fertilization management, impurity removal treatment, watering management, female parent emasculation, florescence management, harvesting and post-harvest treatment. By means of the corn seed hybrid production technology, purity and bud rate of hybrid seeds can reach and exceed 98%, and thequality reaches the international advanced level.

Description

Technical field [0001] The invention belongs to the technical field of agriculture, and specifically relates to a method for parent purification, improved corn seeds, and a method for producing corn seeds. Background technique [0002] Maize seed production bases in my country have long been dominated by western Liaoning. In the mid-1990s, the area reached a maximum of 120,000 ha. However, due to the frequent occurrence of natural disasters and the lack of attention to the construction of processing bases, enterprises have insufficient investment confidence, irregular market operations, insufficient profit connection mechanisms, and weak farmers’ ability to avoid market risks. The area of ​​seed production has rapidly dropped to the current level. Less than 6667hm2. Since the beginning of the 21st century, the western region represented by Zhangye City, Gansu Province has unique natural advantages, producing high-quality corn seeds, few natural disasters, high yield per unit ar...

Claims

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Application Information

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IPC IPC(8): A01H1/02A01H1/04C05G3/60
CPCA01H1/02A01H1/04
Inventor 刘骐榕缪纯庆牛步政刘建勋张东昱
Owner ZHANGYE JINYUYUAN AGRI TECH DEV CO LTD
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