Mud flat soil improvement method

A technology of soil improvement and tidal flats, which is applied in the field of plant cultivation, can solve the problems of long improvement time of single biological measures, low soil organic matter content, single microbial species, etc., and achieve good economy, improvement of soil quality, and improvement of soil physical and chemical properties.

Active Publication Date: 2022-04-26
JIANGSU COASTAL AREA AGRI SCI RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] Aiming at the practical problems of low soil organic matter content, single microbial species, high salinization degree, and long improvement time of single biological measures in coastal tidal flat areas, the invention provides a tidal flat soil improvement method for promoting the accumulation of organic matter in coastal tidal flat soil and realizing crop production. method

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] A method for improving tidal flat soil, comprising the steps of:

[0035] (1) Build cofferdams on the selected tidal flats to isolate the tidal flat soil from seawater; excavate drainage ditches on the cofferdams with a depth of 1.5-2m; An improved residential area, build ridges around the residential area, and the height of the ridge is 1-1.5m; excavate the saline-alkali soil on the surface of the improved residential area to 50cm, lay a straw layer, and lay biochar with a thickness of 10cm on the straw layer, and backfill the topsoil;

[0036] (2) Apply organic fertilizer in the improved plot, mix evenly, and then rotate tillage twice to form a plow layer, and mix it with earthworms;

[0037] (3) Cycling planting of vinaigrette and broad bean, planting vinaigrette in the first season, sowing at the right time in June of the first year, mowing in late July, laying the field flat, mechanical crushing and rotary plowing in late August; second season To plant broad beans...

Embodiment 2

[0049] The tidal flat selected in this example is located in Tiaozini Reclamation Area, Dongtai, Jiangsu Province. It is a muddy coast of silting type, coastal facies landform, flat terrain, subtropical humid monsoon climate, four distinct seasons, and precipitation mainly concentrates in June-August. Soil sample collection and soil quality analysis were carried out on the landform. The soil structure is extremely poor, the soil pH is 8.5-8.8, the organic matter content is 2.42g / kg, and the soil salt content in the 0-20cm plow layer is 0.4-1.0%. Suaeda salsa is dominant, with a coverage rate of less than 2%. High soil salinity and low soil organic matter content are the main obstacles to crop production in this tidal flat area.

[0050] Table 1 Soil aggregate content

[0051]

[0052] Table 2 Indexes of soil physical and chemical properties

[0053]

[0054] Use the following steps to transform the above tidal flat area, the steps are as follows:

[0055] (1) Build cof...

Embodiment 3

[0067] Select 9 tidal flats with similar environments to plant scallops, divide them into 3 groups, repeat 3 times in each group, the first group does not apply fertilizer before planting scallops, the second group uses ordinary farmyard manure, and the third group uses the organic fertilizer described in the present invention. Fertilizer, sowing in June, mowing in late July, paving the field, mechanical crushing and rotary plowing in late August; soil salt content and organic matter content in the three groups were measured in September, and the results are shown in Table 5.

[0068] Table 5 Soil salt content and organic matter content

[0069]

[0070] The above results show that applying the organic fertilizer of the present invention before planting can effectively promote the reduction of soil salt content in tidal flat areas and promote the accumulation of organic matter.

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Abstract

The invention belongs to the field of plant cultivation, and particularly relates to a mud flat soil improvement method. The method has a remarkable saline-alkali soil improvement effect. Through crop rotation of broad beans and sesbania, saline-alkali soil improvement can be rapidly completed, the broad beans in the improvement period can be used as green manure after agricultural products are harvested, the sesbania can be cut multiple times to be used as green manure and livestock feed, the saline-alkali soil improvement effect is remarkable, grain crops such as wheat can be normally planted in the improved saline-alkali soil, and the saline-alkali soil becomes a grain field; the method has good economic and social benefits.

Description

technical field [0001] The invention belongs to the field of plant cultivation, and in particular relates to a tidal flat soil improvement method. Background technique [0002] Tidal flats are an important reserve land resource in China, featuring large area, concentrated distribution, good location conditions, and great potential for comprehensive development of agriculture, animal husbandry and fishery. Tidal flats are an important land resource and space resource, as well as an important base for the development of agricultural production. my country advocates and encourages coastal areas to use tidal flats for land reclamation and to expand the area of ​​cultivated land. However, due to the serious shortage of coastal fresh water, the cost of transforming tidal flats into cultivated land is high and the benefits are low, making it difficult for the country to realize the desire to reclaim land for land reclamation or to achieve a balance between land occupation and compe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G22/40A01G17/00C05F17/70C05G1/00E02D19/04
CPCA01B79/02A01G22/40A01G17/005C05F17/70C05B17/00E02D19/04C05C3/00C05F3/00C05F5/00C05F5/002Y02W30/40
Inventor 朱小梅邢锦城刘冲董静赵宝泉贺亭亭赵小慧洪立洲王建红
Owner JIANGSU COASTAL AREA AGRI SCI RES INST
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