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Water management method to reduce acid damage in sour-reflected field

A management method and water technology, applied in the fields of soil preparation, agriculture, application, etc., can solve problems such as poor sustainability of improvement effects, secondary obstacles to soil compaction, and difficulty in obtaining effects, so as to prevent acid reflux and inhibit acid reflux. The effect of moving water up and reducing the activity of poisonous metals

Active Publication Date: 2019-08-09
INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the high level of acidity in anti-acid fields, the cost of improvement measures to reduce soil acidity by applying alkaline fertilizers is extremely high, and the improvement effect is not sustainable, so it is difficult to obtain better results, and long-term large-scale use of lime will cause secondary barrier to soil compaction

Method used

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  • Water management method to reduce acid damage in sour-reflected field
  • Water management method to reduce acid damage in sour-reflected field
  • Water management method to reduce acid damage in sour-reflected field

Examples

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Effect test

Embodiment 1

[0098] A water management method for alleviating acid damage in acid-reflected fields, the process of which is as follows figure 1 shown, including:

[0099] (a) Drainage and irrigation system design: such as figure 2 As shown, the drainage ditch 1 is dug deep around the acid-reverse field, and the depth of the drainage ditch 1 is 100 cm, and the width of the ditch is 50 cm; The interval is 50m, the ditch depth is 70cm, and the ditch width is 40cm. The interval between auxiliary drainage and irrigation ditches 3 is 30m, the ditch depth is 50cm, and the ditch width is 20cm;

[0100] (b) Plowing oxygen treatment: plowing immediately after the harvest of the previous paddy rice, the plowing depth is 12cm;

[0101] (c) Acid washing and deacidification: Irrigate rice 20 days before transplanting, with a water depth of 5 cm. After soaking for 2 days, drain the water. The drainage should be thorough each time. Repeat this 3 times. Water immediately after the last drainage. 5cm, t...

Embodiment 2

[0108] A water management method for alleviating acid damage in acid-reflected fields, specifically comprising:

[0109] (a) Drainage and irrigation system design: such as figure 2 As shown, the drainage ditch 1 is dug deep around the acid-reverse field, and the depth of the drainage ditch 1 is 100 cm, and the width of the ditch is 50 cm; The interval is 70m, the ditch depth is 70cm, and the ditch width is 40cm;

[0110] (b) Plowing oxygen treatment: plowing immediately after the harvest of the previous paddy rice, the plowing depth is 18cm;

[0111] (c) Acid washing and deacidification: Irrigate rice 22 days before transplanting, with a water depth of 10 cm. After soaking for 3 days, drain the water. The drainage should be thorough each time. Repeat this 3 times. Water immediately after the last drainage. 8cm, to establish a flooded restoration environment;

[0112] (d) Water management during the rice growth period: maintain the flooding and restoration state of the acid...

Embodiment 3

[0118] A water management method for alleviating acid damage in acid-reflected fields, specifically comprising:

[0119] (a) Drainage and irrigation system design: such as figure 2 As shown, the drainage ditch 1 is dug deep around the acid-reverse field, and the depth of the drainage ditch 1 is 100 cm, and the width of the ditch is 50 cm; The interval is 60m, the ditch depth is 70cm, and the ditch width is 40cm. The interval between auxiliary drainage and irrigation ditches 3 is 25m, the ditch depth is 50cm, and the ditch width is 20cm;

[0120] (b) Plowing oxygen treatment: plowing is carried out immediately after the harvest of the previous paddy rice, and the plowing depth is 15cm;

[0121] (c) Acid washing and deacidification: Irrigate rice 18 days before transplanting, with a water depth of 8 cm. After soaking for 2 days, drain the water. The drainage should be thorough each time. Repeat this for 3 times. Water immediately after the last drainage. 6cm, to establish a f...

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Abstract

The invention provides an acid field acid hazard reduction water management method and relates to the technical field of acid field improvement. The method comprises performing tillage instantly after preceding crops are harvested, keeping irrigation and drainage processes before crops are transplanted, performing irrigation instantly after a last drainage is performed to establish a reduced flood environment, maintaining the flood environment during the entire growth period of the crops, and performing management on moisture content until the crops are harvested. The acid field acid hazard reduction water management method alleviates the technical problem that traditional chemical acid field improving methods with alkaline fertilizers and lime are high in cost, poor in continuous effects and prone to resulting in soil hardening. The acid field acid hazard reduction water management method makes use of the characteristics of geochemical cycle and acid growth and decline of sulfur in acid fields, and through tillage oxygen aeration and acid rinsing and drainage on soil as well as the non-chemical improvement method of flooded reduction water management during the growth period of the crops, achieves oxidation-reduction reaction of reductive sulfides of plowing layers, thereby reducing acid hazards of the acid fields, increasing pH of soil, improving the growth environment of the root systems of the crops and increasing the yield.

Description

technical field [0001] The invention relates to the technical field of acid-reflected field improvement, in particular to a water management method for alleviating acid damage in acid-reflected fields. Background technique [0002] Acid-reflective field is a kind of saline paddy soil with strong acid reaction in the coastal area of ​​South my country. This type of soil in my country is more than 20,000 hectares, mainly distributed in coastal provinces such as Guangdong, Guangxi, and Fujian. The acid content of the anti-acid fields is very high, and the pH value of the soil is around 3.0. The strong acid environment increases the mobility of toxic metal ions such as aluminum, manganese, copper, and arsenic in the soil, while nutrients such as phosphorus and potassium are absorbed and fixed. Its bioavailability is reduced, which seriously endangers the growth of rice. In rice fields with severe acid reflux, the tails of rice seedlings will curl and turn black within hours of...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 黄巧义唐拴虎黄旭易琼李苹付弘婷张木张发宝黄建凤逄玉万
Owner INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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