Effect on Physical and Chemical Properties of Soil and Sunflower Growth when Sodic Soils Reclaimed with By-product from Flue Gas Desulphurization

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Effect on Physical and Chemical Properties of Soil and Sunflower Growth when Sodic Soils Reclaimed with By-product from Flue Gas Desulphurization

更新时间：2024-11-07

- Effect on Physical and Chemical Properties of Soil and Sunflower Growth when Sodic Soils Reclaimed with By-product from Flue Gas Desulphurization
- Issue 3, Pages: 34-37(2005)
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- Published：2005
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Effect on Physical and Chemical Properties of Soil and Sunflower Growth when Sodic Soils Reclaimed with By-product from Flue Gas Desulphurization[J]. 2005, (3): 34-37.
DOI：

Effect on Physical and Chemical Properties of Soil and Sunflower Growth when Sodic Soils Reclaimed with By-product from Flue Gas Desulphurization[J]. 2005, (3): 34-37. DOI：

摘要

由于脱硫副产物的主要成分为CaSO4

因此可以用来改良碱化土壤。通过盆栽试验研究了脱硫副产物对碱化土壤的改良效果

试验设8个处理

4个脱硫副产物水平(0

7 5

22 5t/hm2)和2个淋洗水平(750

1200m3/hm2)。研究表明:施加脱硫副产物增加了葵花的出苗率

降低了碱化土壤的碱化度(ESP)、pH、全盐量(TDS)和Na K /Ca2 Mg2

但过量施加脱硫副产物也会抑制作物的出苗和生长;淋洗可以提高脱硫副产物的改良效率。根据试验结果推测当ESP=63 5

pH=9 15时

获得最佳产量的脱硫副产物用量13 05t/hm2。脱硫副产物用量7 5t/hm2和淋洗水量1200m3/hm2的处理组合对碱化土壤改良效果最佳

葵花出苗率和单株产量分别达到了92 5%和36 40g。

Abstract

Because main composition of by-product from flue gas desulphurization(BFGD)are CaSO_4

it can be used for improving sodic soils. A pot experiment was conducted to study the effect of BFGD on ameliorating sodic soil. There were eight treatments designed in this experiment

four BFGD levels(0

7.5

15 and 22.5 t/hm~2)and two leaching levels(750 m~3/hm~2 and 80 m~3/hm~2). Results indicated that rate of sunflower emergence was increased

Exchangeable Sodium Percentage(ESP)

Total Dissolved Salts(TDS)and the ratio Na~ K~ /Ca~(2 ) Mg~(2 ) in water soluble salt were decreased by applying the by-product

but excessive BFGD also had effect on emergence and growth of sunflower

and leaching can improve the improvement efficiency. It's was inferred that the best BFGD requirement was 13.05 t/hm~2 when ESP =63.5

and pH =9. 15 according to the test result. The result of treatment 4 (7.5 t/hm~2 BFGD and 1200 m~3/hm~2 leaching water)was best in this experiment

the emergence rate and single output of sunflower are up to 92.5% and 36.40 g respectively.

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Effect on Physical and Chemical Properties of Soil and Sunflower Growth when Sodic Soils Reclaimed with By-product from Flue Gas Desulphurization

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