A rapid improvement method for inland severely saline-alkali wasteland
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A technology for severe and wasteland, which is applied in the field of rapid improvement of severe saline-alkaline wasteland in my country's inland areas. It can solve the problems of lack of supporting equipment and achieve the effect of fast improvement, strong operability and stable improvement effect
Inactive Publication Date: 2016-03-09
INST OF AGRI ENVIRONMENT & RESOURCE SHANXI ACAD OF AGRI SCI
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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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Embodiment 1
[0029] 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) 1.62ms / cm, total salt content 0.87%, and alkalization degree (ESP) 76.5%.
[0030] A variety of measures were adopted in the rapid improvement method of the test site according to the following steps;
[0031] (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 us...
Embodiment 2
[0046] 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 a saline-alkali wasteland. The soil was heavily soda salinized soil, with a pH of 9.5, an electrical conductivity (EC) of 1.35ms / cm, a total salt content of 0.47%, and an alkalization degree (ESP) of 43.6%.
[0047] The experimental field was quickly improved according to the following steps:
[0048] (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 prelimi...
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Abstract
The invention discloses a method for rapid improvement of inland severe saline-alkali wasteland. The main steps are: scraping off the surface salt, deep plowing and stubble removal, layered application of desulfurized gypsum and weathered coal, digging drainage ditches, digging ridges to build strip fields, finely leveling the land, washing salt in the rainy season, and applying organic fertilizers and improvers 1. Winter irrigation salt, in the second and third years, continue to layer desulfurization gypsum and weathered coal, apply organic fertilizer and improver, but reduce the application dosage by half, and winter irrigation salt. In the first year after improvement, plant leguminous green manure vetch or alfalfa, mow in the vigorous growth period, press green, and turn it into the soil; in the second year, plant sugar beets or forage corn; in the third year, plant granular corn or sorghum, and in the fourth year That is, normal cultivated land use. The invention integrates technologies such as irrigation and drainage for salt washing, flat land salt suppression, chemical salt modification, and biological salt control, which can quickly reduce soil pH and alkalization degree (ESP) of inland saline-alkali wasteland, accelerate the improvement speed of saline-alkali land, and shorten the transformation from wasteland to wasteland. Improvement cycle of 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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Patent Type & Authority Patents(China)
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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