Method for colonizing earthworm populations in coastal saline soil

A saline soil and earthworm technology, applied in animal husbandry and other directions, can solve the problems of difficult leaching of mildly saline soil, increase the utilization of agricultural organic waste resources, etc., achieve sustainable development, solve the problems of fertilizing soil, long life effect

Inactive Publication Date: 2020-11-27
YANCHENG INST OF TECH
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  • Abstract
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Problems solved by technology

The method of the present invention solves the problem that mildly salinized soil in clay is difficult to wash, increases...

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  • Method for colonizing earthworm populations in coastal saline soil

Examples

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Embodiment 1

[0030] The experimental site is located in the coastal area on the west coast of Bohai Bay. The climate type is a warm temperate semi-humid continental monsoon climate, with an annual average temperature of 11.1°C-12.3°C, an annual rainfall of 590-640 mm, and an annual evaporation of 2120-2160 mm. Salt has the characteristics of surface aggregation. The soil salinity in the 0-20 cm layer has dropped to 2.5‰, and the salt content in the 20-80 cm soil layer has not changed much. The salt composition is represented by Cl - 、Na + and SO 4 2-Mainly. The soil pH is 7.78. The surface soil contains 32.7-41.4% sand, 29.1-33.6% silt, and 26.9-36.6% clay. It is clay loam, and the soil bulk density is 1.3 g / cm 3 . Organic matter 11.05 g / kg, total nitrogen 0.63 g / kg 1 .

[0031] Endophytic earthworm provenance Aporrectodea trapezoides The collection and acquisition of earthworms are carried out in local vegetable gardens with an earthworm collector, which is suitable for spring, s...

Embodiment 2

[0047] The difference from Example 1 is that the agricultural organic wastes that are rotary plowed into the soil layer of the mildly salinized farmland soil are alfalfa stalks and sheep manure. Experimental results showed a similar effect on colonization of earthworm populations.

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Abstract

The invention relates to a method for colonizing earthworm populations in coastal saline soil. Earthworms are endogenous earthworms; an inoculation environment is moderate and mild salinized farmlandsoil; and organic materials are adopted to enhance the survival and reproductive capacity of earthworms in salinized soil. The method comprises the following steps of: obtaining and storing the endogenous earthworm provenance, and preparing an earthworm adaptive culture medium; preparing field pieces of salinized farmland soil; and inoculating the endogenous earthworms, and performing field management on the salinized farmland soil. The method disclosed by the invention can be used for increasing active endogenous earthworm populations in soil of a plowing layer (0-30 cm) in the in-situ open-air condition of the moderate and mild salinized farmland soil with heavy texture; the problem that clayey moderate and mild salinized soil is difficult to wash to further reduce the salt content of the soil is solved; the utilization rate of agricultural organic waste resources is increased; the structure of the salinized soil is improved; and the biological activity of the salinized soil is enhanced.

Description

technical field [0001] The invention relates to a method for colonizing earthworm populations, in particular to a method for colonizing earthworm populations in coastal saline soil. Background technique [0002] Saline soil is an important reserve cultivated land resource, and the improvement and utilization of saline soil will provide an important guarantee for my country's food security. In addition to primary salinized soil such as coastal saline soil, there are also secondary salinized soils formed due to the extensive application of chemical fertilizers or unreasonable application of organic fertilizers under protected farming conditions, which lead to the accumulation of soil salt on the soil surface. The salinity in saline soil can be greatly reduced through engineering measures such as salt drainage and salt washing, but for soils with high clay content and heavy texture (such as coastal saline soil), the leaching effect is not only difficult to further reduce the so...

Claims

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Application Information

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IPC IPC(8): A01K67/033
CPCA01K67/0332
Inventor 陈洁王锋成剑波罗婷周峰付强李娜
Owner YANCHENG INST OF TECH
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