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Method for quickly improving inland severe saline-alkaline wasteland

A severe and wasteland technology, which is applied in the field of rapid improvement of severe saline-alkaline wasteland in my country's inland areas, can solve the problems of lack of supporting equipment, and achieve fast improvement, good improvement effect, and good short-term effect

Inactive Publication Date: 2015-04-01
INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This patent solves the problem of difficult sub-salt infiltration of heavily soda-salinized soil, but does not include other improvement measures

Method used

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  • Method for quickly improving inland severe saline-alkaline wasteland
  • Method for quickly improving inland severe saline-alkaline wasteland

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Experimental program
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Effect test

Embodiment 1

[0027] The implementation site is selected at the base of Lanyubao Village, Sansanlipu Township, Tianzhen County, Datong City, Shanxi Province. The local annual average rainfall is 410mm and evaporation is 2450mm. The test area is 1,200 mu. Before the implementation, it was a saline-alkali wasteland, which had not been cultivated and cultivated. There were herbaceous plants such as Suaeda salsa and sporadic Tamarix growing. The soil is heavily soda-salinized soil, and the indicators tested are: pH 10.4, electrical conductivity (EC) 1.62 ms / cm, total salt content 0.87%, and alkalization degree (ESP) 76.5%.

[0028] A variety of measures were adopted in the rapid improvement method of the test site according to the following steps;

[0029] (1) In the season when the soil returns to salt in late March, use bulldozers to scrape off the 7-10 cm salt crust on the surface of the heavily saline-alkaline wasteland, and push it to the head of the field for centralized stacking. Then u...

Embodiment 2

[0044] The implementation site is selected at the saline-alkali land base of Shanxi Shengtian Agriculture and Animal Husbandry Co., Ltd. in Maozao Town, Huairen County, Shuozhou City, Shanxi Province. The local annual average rainfall is 403mm and evaporation is 2405mm. The test area is 500 mu. Before the implementation, it was saline-alkali wasteland. The soil was heavily soda salinized soil with pH 9.5, electrical conductivity (EC) 1.35 ms / cm, total salinity 0.47%, and alkalization degree (ESP) 43.6%.

[0045] The experimental field was quickly improved according to the following steps:

[0046] (1) In the season when the soil returns to salt in late March, use bulldozers to scrape off the 5-8cm salt crust on the surface of the heavily saline-alkaline wasteland, and push it to the head of the field for centralized stacking. Then use bulldozers to clean up the surface soil, remove surface impurities, stones and plant impurities, and perform preliminary leveling.

[0047] (2)...

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Abstract

The invention discloses a method for quickly improving inland severe saline-alkaline wasteland. The method mainly comprises the steps of scraping ground surface salinity, performing deep ploughing and stubble cleaning, spreading desulfurization gypsum and weathered coal in a layered mode, digging drainage ditches, making field ridges to form strip fields, finely flattening the land, performing leisure salt leaching in rainy season, evenly applying an organic fertilizer and a modifying agent, performing winter irrigation for salt leaching, continuously spreading the desulfurization gypsum and weathered coal in the second year and third year in a layered mode, evenly applying half of organic fertilizer and modifying agent dosage and performing winter irrigation for salt leaching; planting leguminous green manure vicia villosa or alfalfa in the first year after improvement, performing mowing and green manure dressing and ploughing soil at a vigorously growing stage; planting sugarbeet or forage maize at the second year; planting grain corns or sorghums at the third year, and normally ploughing and using the land at the fourth year. The method for quickly improving the inland severe saline-alkaline wasteland integrates water irrigation and drainage, salt leaching, soil salinization controlling on flat ground, chemical salinization improvement, biological salinization controlling and other technologies and can quickly reduce soil pH and ESP of the inland saline-alkaline wasteland, improve the saline-alkaline wasteland improving speed and shorten an improvement period for changing the wasteland into cultivated land.

Description

technical field [0001] The invention relates to the technical field of saline-alkali land improvement, in particular to a rapid improvement method suitable for severe saline-alkali barren land in inland my country. Background technique [0002] my country has a total of 99.13 million hectares of saline-alkali land, of which the inland saline-alkali land area is the largest, accounting for about 69% of the national saline-alkali land. Among them, the inland heavily saline-alkaline barren land has strong alkalinity, high salt content, heavy and compacted soil, shrinks and cracks on the surface when dry, muddy when wet, and extremely poor tillability. At the same time, the terrain is low-lying, the buried depth of shallow groundwater is shallow, and the drainage is poor, so it is extremely difficult to improve. There are a large number of severely saline-alkaline wastelands in northern my country, which are currently in a barren state due to the difficulty of improvement. Our...

Claims

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Application Information

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IPC IPC(8): A01B79/02
CPCY02A40/10
Inventor 张强李磊王斌冯悦晨聂督孙捷黄高鉴温东
Owner INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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