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Method for planting cylindrical Elymus under rain-fed condition in typical steppe region

A typical grassland and Elymus cylindrica technology, applied in botany equipment and methods, horticultural methods, chemical instruments and methods, etc., can solve problems such as slow growth of Elymus cylindrica, inability to emerge seedling survival rate, and poor drought resistance of seedlings , to achieve the effect of increasing the overwintering rate, shortening the cultivation time, and improving the survival rate

Active Publication Date: 2019-01-18
NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] At present, the problems of planting Elymus cylindrica under rain-fed conditions in typical grassland areas are: 1) Poor soil water retention; 2) The sowing time is limited by rainfall; 3) The sown seeds are easily blown away by the wind, making it difficult to achieve planting; 4) Seedlings have poor drought resistance. In case of drought after sowing or emergence, seedlings cannot emerge or the survival rate of seedlings is often low; For a long time, it often enters the frozen soil season before the root system is fully developed, and the survival rate of seedlings is low.

Method used

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  • Method for planting cylindrical Elymus under rain-fed condition in typical steppe region
  • Method for planting cylindrical Elymus under rain-fed condition in typical steppe region
  • Method for planting cylindrical Elymus under rain-fed condition in typical steppe region

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Experimental program
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Effect test

Embodiment approach

[0060] According to a preferred embodiment of the present invention, step 1 includes the following sub-steps:

[0061] Step 1-1, selecting the seeds of Elymus cylindrica to prepare explants;

[0062] Step 1-2, inoculating the explants obtained in step 1-1 on the induction medium, inducing callus tissue, and subculturing the callus tissue;

[0063] In step 1-3, the callus subcultured in step 1-2 is placed on a differentiation medium and cultivated until it differentiates into clustered shoots;

[0064] In step 1-4, the clustered seedlings obtained in steps 1-3 are placed on the rooting medium and cultivated until young roots grow;

[0065] Step 1-5, transplanting the seedlings that grow radicles in the steps 1-4 to the cultivation soil matrix and continue to cultivate until they grow into finished seedlings;

[0066] In steps 1-6, the finished seedlings in steps 1-5 are hardened to prepare for planting on the grassland.

[0067] According to a preferred embodiment of the pre...

Embodiment 1

[0176] In this embodiment, the cultivation of the Elymus cylindrica seedlings was carried out in an artificial climate chamber.

[0177] Breeding steps:

[0178] (1) Cultivate the seedlings of Elymus cylindrica:

[0179] 1) Select the mature seeds of Elymus cylindrica growing in the typical grassland area of ​​Qilian Mountains, use 1% mercuric chloride to sterilize the surface of the seeds, then wash with sterile double distilled water for 3 times, and select the embryos of the seeds as explants body.

[0180] 2) Inoculate the above-mentioned explants on the induction medium, and the medium formula is: MS, 2,4-dichlorophenoxyacetic acid with a mass concentration of 5 mg / L, 2 mg / L of abscisic acid, 0.05 mg / L The kinetin of L, the sucrose of 25g / L and the agar of 5g / L;

[0181] The calli with a diameter of 2 to 3 cm that are light yellow in color and compact in structure are selected to be peeled off, and inoculated on the subculture medium,

[0182] The formulation of the s...

experiment example 1

[0223] The Elymus cylindrica is planted in embodiment 1 and comparative example 1 when the rainy season ends, statistically analyzes the seedling survival rate of different methods; Measure the overwintering rate of Elymus cylindrica in next spring; area of ​​production. in,

[0224] Survival rate=(number of surviving plants / number of planted plants)×100%;

[0225] Overwintering rate=(plants surviving the winter / number of planted plants)×100%.

[0226] The results are shown in Table 1:

[0227] Table 1 Seedling survival rate, overwintering rate and hay yield per unit area of ​​Elymus cylindrica

[0228]

[0229] As can be seen from the table, in the planting method of Elymus cylindrica described in Example 1, its seedling survival rate has improved by 35.1% compared with Comparative Example 1, and the overwintering rate has improved by 22.5% compared with Comparative Example 1, and the hay yield per unit area is relatively high. Ratio 1 improves by 55.6%.

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Abstract

The invention discloses a method for planting cylindrical Elymus under a rain-fed condition in a typical steppe region. The method comprise: firstly planting seedlings of cylindrical Elymus indoors inadvance; then selecting a land in the year of planting and preparing the land, and applying a soil conditioner in soil; after rain, planting the seedlings which are performed by seedling hardening intime, and arranging wind prevention and sand-fixing device on edges of the piece of land; finally, performing field management of cutting and topdressing on the planted the cylindrical Elymus. The method adopts a method of tissue culture to cultivate the Elymus nutans in advance, and can significantly improve the survival rate and the wintering rate of the cylindrical Elymus.

Description

technical field [0001] The invention relates to the field of forage planting, in particular to a method for planting Elymus cylindrica under rain-fed conditions in a typical grassland area. Background technique [0002] The Qilian Mountains are the meeting point of the Loess Plateau, the Qinghai-Tibet Plateau and the Mongolian-Xinjiang Desert, and the transition zone between the arid and semi-arid regions in Northwest my country. The alpine grassland is one of the important ecosystems of the Qilian Mountains. With climate change and the impact of human factors, grassland desertification has become one of the major environmental problems facing the world. [0003] In recent years, with the implementation of grassland construction in alpine and arid areas, returning grazing land to grassland and ecological governance, the demand for grass species with high feed value and strong adaptability is increasing. It plays an important role in expanding the area of ​​artificial grassl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G22/00A01H4/00A01G13/00C05G3/00C09K17/40C09K101/00
CPCA01G13/00A01H4/001A01H4/008C05F11/00C05G3/00C09K17/40C09K2101/00
Inventor 冯起刘蔚郭瑞贾冰鱼腾飞席海洋张成琦
Owner NORTHWEST INST OF ECO ENVIRONMENT & RESOURCES CAS
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