Leymus chinensis gamogenesis capability improving method

A technology for sexual reproduction and Leymus chinensis, which is applied in the field of improving the sexual reproduction of Leymus chinensis, can solve the problems of unreachable and three low levels of Leymus chinensis, and achieve the effects of improving utilization rate, low seed setting rate, and improving earing rate

Active Publication Date: 2016-01-06
NORTHEAST FORESTRY UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the serious phenomenon of "three lows" of Leymus chinensis, if its production capacity and utilization value

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] As an embodiment of the present invention, the method for improving the sexual reproduction ability of Leymus chinensis comprises the following steps:

[0024] 1. Sample plot and fence enclosure

[0025] The test site is located in the southwest of the Songnen Plain in Northeast China, the artificial Leymus chinensis grassland (E123°44′, N44°40′) established in 2000 in the Grass Science Research Station of Northeast Normal University, Changling County, Jilin Province. It has an arid monsoon climate, with an average annual temperature of 4.9°C and an average annual precipitation of 470mm. The soil in the test plot is mainly a mixed soil type of saline soil and alkaline soil, and the soil pH value is 9-10.

[0026] The fencing began in April 2009. Compared with 2000, the Leymus chinensis meadow at this time has reached a moderate to severe degree of degradation (vegetation coverage in this area has decreased, the earing rate of Leymus chinensis has dropped to 30%, and the...

Embodiment 2

[0044] As another embodiment of the present invention, the method for improving the sexual reproduction ability of Leymus chinensis comprises the following steps:

[0045] 1. Sample plot and fence enclosure

[0046] The test site is located in Daqing City in the west of Heilongjiang Province. The geographical location is E124°~126°, N45°~47°. This area belongs to the north temperate continental monsoon climate, with an annual average temperature of 2.5°C-3.1°C and an annual average precipitation of 450-550mm, the annual effective accumulated temperature is 1900-2800℃, the soil type is chernozem, with different degrees of salinization. Grassland vegetation presents obvious patches, and Leymus chinensis is the dominant species in the grassland community, forming a single or mixed small community with different types of associated plants.

[0047] The fence enclosure started in April 2011, when the Leymus chinensis grassland reached the moderate to severe degree of degradation (...

Embodiment 3

[0065] As another embodiment of the present invention, the method for improving the sexual reproduction ability of Leymus chinensis comprises the following steps:

[0066] 1. Sample plot and fence enclosure

[0067] The test site is located in Jiangjiadian grassland, Daan City, Jilin Province. The grassland types mainly include plain meadow grassland, plain meadow grassland and hilly dry grassland. The grassland soil is mainly saline-alkali chernozem, saline-alkali light Calcareous soil, salinized meadow soil, saline soil, alkaline soil and saline marsh soil. The top community distributed here is Leymus chinensis community, which gradually degenerates into other communities under the influence of man-made and natural factors.

[0068] Fence enclosure began in April 2012, when the Leymus chinensis grassland reached the moderate to severe degree of degradation (vegetation coverage in this area decreased, the earing rate of Leymus chinensis dropped to 36%, the seed setting rate ...

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Abstract

The invention discloses a Leymus chinensis gamogenesis capability improving method comprising the following steps: 1, applying mixed fertilizer on a Leymus chinensis meadow in a Leymus chinensis after-fruit nutrition period, and watering the Leymus chinensis meadow so as to dissolve the fertilizer in the soil; 2, burning the Leymus chinensis in spring the next year, and maintaining soil water content at 20-35% in a Leymus chinensis turning green period; 3, spraying water solution, mixing heteroauxin with naphthalene acetic acid, on the Leymus chinensis meadow when the Leymus chinensis grows to a jointing period, and keeping spraying until the flowering stage of the Leymus chinensis; 4, spraying water solution, containing 5-amino-laevulic acid and potassium nitrate, on the flowering Leymus chinensis when the Leymus chinensis grows to the full flowering stage, and keeping spraying until the Leymus chinensis ripening state. The method couples several artificial means so as to improve Leymus chinensis heading rate, ripening rate, and seed germination capacity, thus solving the problems that conventional research can only improve one index of three low indexes of the Leymus chinensis.

Description

technical field [0001] The invention relates to the technical field of Leymus chinensis planting, in particular to a method for improving the sexual reproduction ability of Leymus chinensis. Background technique [0002] Leymus chinensis, also known as Elymus chinensis, is a typical perennial rhizome grass. In Northeast my country, Leymus chinensis plays an important role as a colony species, whether it is natural grassland or artificial grassland. It not only has excellent characteristics such as strong salt-alkali tolerance and drought tolerance, but also is a high-quality feed with high nutritional value and good palatability, and has important ecological and economic value. In recent years, due to human overgrazing, mowing, and large-scale land reclamation, more than 70% of Leymus chinensis grasslands in Northeast China have experienced varying degrees of degradation, which not only limits the development of animal husbandry, but also destroys the ecological environment...

Claims

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Application Information

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IPC IPC(8): A01G1/00A01G7/06
CPCA01G7/06A01G22/00
Inventor 蔺吉祥庞秋颖王洋阎秀峰
Owner NORTHEAST FORESTRY UNIVERSITY
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