Comprehensive biological improvement method for severe saline-alkaline grassland

A comprehensive biological and saline-alkali technology, applied in land preparation methods, applications, agricultural machinery and implements, etc., can solve the problems of complex salt composition, special soil conditions, and high surface salinity, achieve a good soil biological environment, promote the formation of Develop and improve the effect of soil physical structure

Active Publication Date: 2021-08-10
PRATACULTURE INST HEILONGJIANG ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the special soil conditions of Songnen severely saline-alkali grassland (high salt content in the surface layer, complex salt composition, low-lying alkali spots, etc.), it is difficult to improve, so far there is no mature severe saline-alkali grassland suitable for large-scale promotion There is still a need to vigorously carry out related research to improve the technology

Method used

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  • Comprehensive biological improvement method for severe saline-alkaline grassland
  • Comprehensive biological improvement method for severe saline-alkaline grassland
  • Comprehensive biological improvement method for severe saline-alkaline grassland

Examples

Experimental program
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Effect test

experiment example 1

[0029] Experimental Example 1 Saline Alkali Tolerant Pioneer Plant Combination Improvement of Severely Salinized Grassland Experiment

[0030] 1. Experimental location

[0031] The experimental site is located in Shengli Village, Yuanda Township, Lanxi County, Heilongjiang Province. The geographical location is 126°08′ east longitude, 46°12′ north latitude, and the average altitude is 160m. Is a temperate continental climate. The annual average sunshine hours are 2900h, the annual average temperature is -5.9°C, the extreme maximum temperature is 37.6°C, the extreme minimum temperature is -39°C, the annual average precipitation is 469.7mm, and the frost-free period is 139 days. The soil is saline-alkali meadow soil, the soil pH value is 9.65-10.58, and the organic matter content is 9.22-10.73g·kg -1 . The experimental sample land is a severely salinized grassland, the proportion of alkali spots is more than 50%, and the vegetation coverage is less than 20%.

[0032] 2. Experi...

Embodiment 1

[0061] The comprehensive biological improvement of embodiment 1 severe saline-alkali grassland

[0062] 1. Experimental location

[0063] The experimental site is located in Shengli Village, Yuanda Township, Lanxi County, Heilongjiang Province. The geographical location is 126°08′ east longitude, 46°12′ north latitude, and the average altitude is 160m. Is a temperate continental climate. The annual average sunshine hours are 2900h, the annual average temperature is -5.9°C, the extreme maximum temperature is 37.6°C, the extreme minimum temperature is -39°C, the annual average precipitation is 469.7mm, and the frost-free period is 139 days. The soil is saline-alkali meadow soil, the soil pH value is 9.65-10.58, and the organic matter content is 9.22-10.73g·kg -1 . The experimental sample land is a severely salinized grassland, the proportion of alkali spots is more than 50%, and the vegetation coverage is less than 20%.

[0064] 2. Comprehensive improvement method

[0065] ...

Embodiment 2

[0075] The comprehensive biological improvement of embodiment 2 severe saline-alkali grassland

[0076] 1. Experimental location

[0077] The experimental site is located in Shengli Village, Yuanda Township, Lanxi County, Heilongjiang Province. The geographical location is 126°08′ east longitude, 46°12′ north latitude, and the average altitude is 160m. Is a temperate continental climate. The annual average sunshine hours are 2900h, the annual average temperature is -5.9°C, the extreme maximum temperature is 37.6°C, the extreme minimum temperature is -39°C, the annual average precipitation is 469.7mm, and the frost-free period is 139 days. The soil is saline-alkali meadow soil, the soil pH value is 9.65-10.58, and the organic matter content is 9.22-10.73g·kg -1 . The experimental sample land is a severely salinized grassland, the proportion of alkali spots is more than 50%, and the vegetation coverage is less than 20%.

[0078] 2. Comprehensive improvement method

[0079] ...

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Abstract

The invention discloses a comprehensive biological improvement method for severe saline-alkaline grassland. The method sequentially comprises the following steps: (1) applying a crop straw fertilizer as a base fertilizer to the earth surface; (2) conducting soil preparation; (3) sowing salt-alkali tolerant pioneer plants; (4) conducting grassland management. Leymus chinensis, awnless brome, roegneria kamoji, barnyard grass and sesbania which are extremely high in saline-alkaline tolerance and have certain waterlogging tolerance are used as basic plant materials, the corn straw fertilizer is used as a soil improvement additive material, the saline-alkaline tolerance and waterlogging tolerance plant materials are sown according to a certain proportion through the agricultural measure of shallow ploughing and turning or light raking, a stable and high-diversity mixed vegetation community is constructed, and the vegetation recovery effect is achieved; the corn straw organic fertilizer is selected, the soil pH is adjusted, meanwhile, the soil physical structure is improved, soil organic matter and nutrients are increased, a good soil biological environment is created, and formation and development of plant communities are promoted; and surface layer shallow turning or light raking measures are adopted, the saline-alkaline soil cementation phenomenon is effectively reduced, and the improvement cost is reduced.

Description

technical field [0001] The invention relates to a method for improving saline-alkali land, in particular to a comprehensive biological improvement method for severely saline-alkali grassland, and belongs to the field of improving saline-alkali grassland. Background technique [0002] Soil salinization is one of the six major ecological problems currently existing in China. The Songnen Plain is one of the three major saline areas in the world, with an area of ​​about 2.88 million ha. The Songnen Grassland is flat and has excellent grass quality. It is the largest Leymus chinensis production area in the world and has always been an important animal husbandry production base in the country. However, since the 1950s, due to various human, climate, natural disasters and other factors, the salinization of Songnen Grassland has become increasingly serious. The area of ​​heavily salinized grassland is 557,000 ha, and the area of ​​alkali spots known as "grassland cancer" reaches 1...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 潘多锋张瑞博李道明王岭王建永高超申忠宝王建丽李佶恺刘凯刘杰琳
Owner PRATACULTURE INST HEILONGJIANG ACAD OF AGRI SCI
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