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Method for cultivating semi-artificial gramineous-legumina hybrid grassland on salinization grassland

A semi-artificial, salinization technology, applied in planting methods, botanical equipment and methods, horticulture, etc., can solve problems such as threats to the survival of leguminous forages, obstacles to soil cultivation, and limited to short-lived

Inactive Publication Date: 2009-10-21
NORTHEAST NORMAL UNIVERSITY
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  • Summary
  • Abstract
  • Description
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  • Application Information

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Problems solved by technology

First of all, the no-tillage method usually used to improve natural grassland is not suitable for the northern grassland soil with high compactness and large volume, and the concentrated rainfall in the rainy season hinders the implementation of soil tillage; secondly, the higher soil salinity and pH value make Leguminous herbages are under great survival threat during the fragile seedling period; thirdly, the seasonal pattern of water resource supply can only limit the growth of seedlings in the short rainy season, and this is the period when weeds are abundant and the pressure of survival competition is high ;Finally, the long severe winter and the spring cold and spring drought after turning green are severe challenges to test the nutrient storage capacity of seedlings. These biotic and abiotic factors all have a considerable negative impact on the settlement of leguminous forages

Method used

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  • Method for cultivating semi-artificial gramineous-legumina hybrid grassland on salinization grassland
  • Method for cultivating semi-artificial gramineous-legumina hybrid grassland on salinization grassland

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Embodiment Construction

[0031] Ground work treatment is carried out 1-2 weeks before the rainy season (in mid-June in the Songnen area). First, the above-ground vegetation is cut and removed, and the stubble height is 3-4cm. Then the trenching machine breaks the complete ground, the distance between the trenches is 65cm, the trench depth is 5-6cm, the upper width is 7-8cm, and the lower width is 1-2cm. Sow the polished seeds (to break the hard seeds) into the ditch. The sowing rate depends on the species and the later use method. If it is used as a mowing field, the effective seeding rate of leguminous pastures is: Xing'an Pediatricum 4.5-5kg / ha , black alfalfa 2.5-3kg / ha, alfalfa 3.5-4kg / ha. If it is used as a grazing land, the effective seed sowing rate is 9.5-10kg / ha of Xing'an clover, 4.5-5kg / ha of yellow alfalfa, and 6.5-7kg / ha of alfalfa. Cover with soil 1-2cm, if the seeds are small (diameter<2mm), do not cover with soil. After the rainy season comes in late June, the salinity of the soil de...

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Abstract

The invention belongs to a method for establishing and planting a semi-artificial grassland, and in particular relates to a method for introducing leguminous pasture into a saline-alkali grassland in the north to establish and plant a semi-artificial grassland. The use of leguminous forages to improve natural grasslands in semi-arid areas, especially the mixed sowing of grass and beans, is to select suitable farming methods for special soil conditions and succession rules, based on the characteristics of saline-alkali-tolerant legume forage seeds, seasonal distribution of rainfall, and soil conditions. The dynamic changes of water and salt and the growth period of seedlings select the appropriate sowing time, and take appropriate management measures to weaken interspecific competition, increase the area of ​​assimilative organs, and promote the rapid and successful settlement of leguminous forage seedlings. The method has the advantages of increasing seedling emergence rate, settlement rate and regreening rate, good seedling growth index, low cost, short planting period, easy popularization and the like.

Description

technical field [0001] The invention belongs to a method for establishing and planting a semi-artificial grassland, and in particular relates to a method for introducing leguminous pasture into a saline-alkali grassland in the north to establish and plant a semi-artificial grassland. Background technique [0002] In natural grassland ecosystems, nitrogen deficiency is the main factor limiting plant growth. Leguminous pasture fixes nitrogen in the atmosphere through its symbiotic rhizobia and converts it into nitrogen nutrients that can be absorbed and utilized by other grassland plants. It is equivalent to a natural "nitrogen fertilizer factory" in the grassland ecosystem. At the same time, leguminous forage itself is a high-protein forage, which increases the protein content of the entire pasture. Leguminous forages play a very important role in improving nitrogen balance in grassland ecosystems and promoting grassland livestock production. [0003] In general, the richne...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G1/00A01C14/00
Inventor 王平周道玮张宝田张庆超
Owner NORTHEAST NORMAL UNIVERSITY
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