Method of Improving Ear Seed Setting Rate by Mixing Different Maize Varieties

A technology of seed setting rate and variety, applied in the direction of grain cultivation, etc., to increase production cost, increase group yield, and have good feasibility.

Active Publication Date: 2020-09-04
HENAN AGRICULTURAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Selection of Complementary Varieties Based on Differences in Resistance to Disasters

Method used

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  • Method of Improving Ear Seed Setting Rate by Mixing Different Maize Varieties
  • Method of Improving Ear Seed Setting Rate by Mixing Different Maize Varieties
  • Method of Improving Ear Seed Setting Rate by Mixing Different Maize Varieties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The selected varieties in this example are Denghai 662 (National Approval Yu 2009010) and Denghai 701 (Lu Nong Approval 2009003). In this combination, Denghai 662 does not meet the silking period and the loose powder period, and the silking period is later than The powder-spreading period is 2 days, and the amount of pollen is small, and the silking period is too long, which is easy to cause poor firmness at the top and bottom of the ear. Denghai 701’s silking and pollen period coincided with each other, almost on the same day, and belonged to a variety that met well during its flowering period and had a large amount of pollen. The problem that Denghai 662 single crop is prone to is that the slow-growing filaments at the bottom and top of the female ears have finished their own tassels when the bracts are spit out. Therefore, bald tips and bald tails often occur in production. In disaster years such as high temperatures The performance is more serious. According to the ...

Embodiment 2

[0050] The selected varieties in this example are Weike 702 (National Approval Jade 2010) and Denghai 605 (National Approval Jade 2010009). The silking period and loose powder period of these two varieties are not very good. Weike 702 Spit Silk is earlier than loose flour, and Denghai 605 is spinning later than loose flour. But the difference is not much, the time difference between the spinning period and the loose powder period is 1.5-2 days.

[0051] In production practice, in addition to the fact that the bottom of the ears of Denghai 605 is not intact, in normal years, the pollen of these two varieties can basically meet the needs of their own fertilization. However, Denghai 605 has poor heat resistance, and bald tails are prone to appear at the bottom of ears in years experiencing high temperature heat damage. It may be due to the slower growth of Denghai 605 under high temperature conditions and the delayed silking time, resulting in poor encounters between male and femal...

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Abstract

The invention discloses a cluster setting rate improving method by mixed cropping of different corn varieties. Varieties with high resistance in the adverse condition are mixed cropped reasonably to prolong pollen dispersal duration of a mixed cropped group, provide sufficient high-quality pollen for insemination and setting of gynoecium, improve the group setting rate, and solve the problems thatadverse growth of male and female ears in the adverse condition causes unsatisfied encountering state of florescence, relatively low pollen quality and less pollen. Fertility and habit change of thevarieties in meteorological disasters are used ingeniously to match and combine the variables properly, a reasonable mixed cropping plantation belt is formed, the cluster setting rate of the mixed group is improved, and the group output is improved. The pollen complementary effect can be used to overcome the problem that gynoecium in the variety with early fusule but late pollen dispersal in the adverse condition needs to wait for pollen, there is pollen when filaments are provided to realize insemination, and insemination is completed when the filaments are most vital.

Description

Technical field [0001] The invention belongs to the technical field of agricultural production and relates to a method for intercropping different corn varieties to increase the ear setting rate of a corn population. Background technique [0002] Corn is the largest food crop in my country. It has a broad market prospects for both grain and feed. Therefore, achieving high and stable corn yields is crucial to my country's food security. The male and female flowers of maize are in the same plant and ectopic, and the pollination setting is very susceptible to environmental changes, which affects the maize ear setting rate and leads to large fluctuations in yield. [0003] In recent years, affected by global warming, extreme weather has occurred frequently, natural disasters have occurred frequently, and the corn seed setting rate has been seriously affected. Different breeds show different responses to disasters. Choosing varieties with good resistance is an important way to allevi...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/20
CPCA01G22/20
Inventor 李潮海李鸿萍王群赵亚丽李志宾
Owner HENAN AGRICULTURAL UNIVERSITY
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