Direct-sowing seedling culture method capable of increasing survival rate of leymus chinensis growing in moderate-severe soda saline-alkali soil

A technology of soil Leymus chinensis and survival rate, which is applied in the field of direct-seeding seedling raising to improve the survival rate of Leymus chinensis in medium-to-severe soda saline-alkaline soil, can solve the problems of low seed emergence rate, low survival rate of transplanting, low germination rate of Leymus chinensis, etc., and achieve The effect of improving the emergence rate, low cost and simple method

Active Publication Date: 2017-08-08
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention aims to solve the problems of low germination rate, low seed emergence rate and low transplanting survival rate of Leymus chinensis under the background of medium-severe saline-alkali soil

Method used

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specific Embodiment approach 1

[0028] Specific embodiment one: present embodiment is a kind of direct-seeding seedling raising method that improves the survival rate of medium and severe soda saline-alkaline soil Leymus chinensis, and the method is carried out according to the following steps:

[0029] 1. Leymus chinensis seed treatment

[0030] Remove the clods, stones, plant rhizomes and empty seeds mixed into the seeds, then put the Leymus chinensis seeds into nylon mesh bags 5 to 30 days before seedling raising, and soak them in a container filled with distilled water. Keep all the nylon mesh bags below the water surface, change the water every 3 to 5 days, take out the seeds in the container one day before sowing, and dry them;

[0031] Second, seedlings are treated with saline-alkali soil

[0032] Take the soil from the surface of the soil to a depth of 20 cm in the medium-to-severe soda saline-alkali land and air-dry it, sieve the air-dried surface soil, take the under-sieve and remove impurities in...

specific Embodiment approach 2

[0046] Specific embodiment 2: The difference between this embodiment and specific embodiment 1 is that the sieve used when the air-dried surface soil is sieved in step 2 is a soil sieve with an aperture of 1 to 3 mm, and the undersieve is sieved again The sieve used is a soil sieve with a hole diameter of 1-3mm. Other steps and parameters are the same as in the first embodiment.

specific Embodiment approach 3

[0047] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the sieve used in step 2 to sieve the air-dried surface soil is a soil sieve with an aperture of 1-3 mm. Other steps and parameters are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a direct-sowing seedling culture method capable of increasing survival rate of leymus chinensis growing in moderate-severe soda saline-alkali soil and relates to a direct-sowing seedling culture method of the leymus chinensis in order to solve the problems of low germination rate, low seed emergence rate and low transplanting survival rate of the leymus chinensis in a conventional leymus chinensis direct-sowing seedling culture technology under the background of moderate-severe saline-alkali soil. The direct-sowing seedling culture method comprises steps as follows: 1, impurity removal and soaking of leymus chinensis seeds; 2, sieving of saline-alkali soil for seedling culture; 3, selection of culturing vessels; 4, filling of the culturing vessels with the saline-alkali soil; 5, trenching on the upper surface of moderate seedling culture soil and addition of isolation media; 6, sowing; 7, management after sowing. According to the direct-sowing seedling culture method, the leymus chinensis seeds can be isolated from the severe saline-alkali soil stress environment in the germination period and the acicular seedling period, a better environment is provided for growth of the leymus chinensis, and the germination rate of the leymus chinensis and the survival rate of the seedlings are increased to the great extent; the germination rate of the leymus chinensis reaches 80% or higher, and the survival rate reaches 90% or higher. The method is suitable for direct-sowing seedling culture of the leymus chinensis.

Description

technical field [0001] The invention discloses a method for raising seedlings of Leymus chinensis by direct seeding. Background technique [0002] Saline-alkali soil is a soil type widely distributed on the earth, and the area of ​​saline-alkali land in the world has reached 9.6×10 8 hm 2 , more than 60% are alkaline earths characterized by high pH. China has various types of saline-alkali soil with an area of ​​9.9×10 6 hm 2 , the area of ​​soda saline-alkali soil in Northeast China is about 7.66×10 6 hm 2 , is one of the world's three major soda saline-alkali distribution areas, and the degree of salinization is mainly moderate to severe, and the ecological environment has deteriorated seriously. [0003] Leymus chinensis is a typical plant that can adapt to the soda saline-alkali land in Northeast China. Leymus chinensis is a high-quality forage grass. It has the ecological sustainability of cold resistance, drought resistance and salt-alkali resistance, high nutri...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00
CPCA01G22/00
Inventor 马红媛杨帆赵丹丹魏继平梁正伟
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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