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A kind of saline-alkali land soil conditioner and its preparation method and application

A soil improver and technology for saline-alkali land, applied in the field of soil improver for saline-alkali land, can solve the problems of incomplete improvement effect, limited wide application, negative impact, etc., and achieve improved soil structure and permeability, high cation replacement capacity, strong The effect of adsorption

Active Publication Date: 2018-08-10
湖南重金属污染耕地安全高效利用工程研究中心有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, among various soil improvers, the high cost of artificially synthesized polymer compounds and the potential risk of environmental pollution limit its wide application; a single soil improver has incomplete improvement effects or negative effects to varying degrees Waiting for deficiencies

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1～10

[0024] The formulations of soil conditioners for saline-alkali land provided by Examples 1-10 are shown in Table 1.

[0025] Take desulfurized gypsum, humic acid and citric acid according to the formula described in Table 1, respectively pass through a 100-mesh sieve, and mix evenly to obtain a soil conditioner for saline-alkali land.

[0026] Table 1: Composition of saline-alkali soil conditioner (unit: g)

[0027]

Desulfurization gypsum

humic acid

citric acid

Example 1

52.5

30

17.5

Example 2

45

25

30

Example 3

46.5

26

27.5

Example 4

48

27

25

Example 5

49.5

28

22.5

Example 6

51

29

20

Example 7

54

31

15

Example 8

55.5

32

12.5

Example 9

57

33

10

Example 10

58.5

34

7.5

[0028] Take desulfurized gypsum, humic acid and citric acid according to the formula described in Table 1, respectively pass th...

Embodiment 11

[0032] The improvement agent that embodiment 1~10 and comparative example 1, 2 provides is added in the saline-alkali soil with the consumption of 1050kg, and the pH value of described saline-alkali soil is 10.9, and electrical conductivity is 2430us / cm; After adding described improvement agent The pakchoi were planted on the soil, and the pakchoi were planted on the normal soil and the soil without any amendments simultaneously, as a control.

[0033] The number of germinated seeds was regularly counted every day, and the germination ended on the 10th day, and the fresh weight of the seedlings was measured at the end of germination.

[0034] The pH value and electrical conductivity of the soil itself, as well as the germination rate, germination potential, germination index and vigor index of pakchoi seeds after being treated with different amendments were compared in parallel; the results are shown in Table 3.

[0035] The judging method of the germination rate is: germinati...

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PUM

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Abstract

The invention relates to a saline-alkali soil conditioner, prepared from the following components by mass percent: 45-65% of desulfurized gypsum, 25-35% of humic acid and 5-30% of citric acid. The invention also relates to a preparation method and the application of the saline-alkali soil conditioner. The saline-alkali soil conditioner is prepared by blending the low-cost raw materials according to the specific proportion, is simple and convenient to use, and is capable of adjusting the pH of soil, increasing soil organic matters, promoting the formation of a soil aggregate structure and improving the permeability of the soil so as to comprehensively improve the saline-alkali soil from multiple points of view; therefore, the saline-alkali soil conditioner has wide popularization and application prospect.

Description

technical field [0001] The invention relates to the technical field of agricultural environment conservation and restoration, in particular to a soil conditioner for saline-alkali land. Background technique [0002] The problems of soil salinization and secondary salinization exist widely in the world, and have become resource constraints for the sustainable development of irrigated agriculture in the world. The area of ​​saline-alkali land in my country is about 23.4 million hm 2 , are distributed in Northwest China, North China, Northeast West and coastal areas, and are of various types. Improving, developing and utilizing saline-alkali land resources can alleviate the contradiction between population and land due to the increasing population, and is of great significance to maintaining sustainable agricultural development, improving the ecological environment, and promoting regional economic, social and ecological sustainable development. [0003] At present, the improv...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40B09C1/08C09K101/00C09K109/00
CPCB09C1/08B09C2101/00C09K17/40C09K2101/00C09K2109/00
Inventor 周亮谭石勇谭武贵余佳玲文亚雄杨丽丽吕福新
Owner 湖南重金属污染耕地安全高效利用工程研究中心有限公司
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