Acid field acid hazard reduction water management method

A management method and water technology, applied in the direction of soil preparation methods, applications, agricultural machinery and tools, 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 poisoning , Inhibit acid water upward migration, reduce the effect of poisonous metal activity

Active Publication Date: 2017-05-31
INST OF AGRI RESOURCES & ENVIRONMENT GUANGDONG ACADEMY OF AGRI SCI
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  • 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

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  • Acid field acid hazard reduction water management method
  • Acid field acid hazard reduction water management method
  • Acid field acid hazard reduction water management method

Examples

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Effect test

Embodiment 1

[0098] A water management method to reduce acid damage in acid fields, the process is as follows figure 1 As shown, specifically including:

[0099] (a) Drainage and irrigation system design: such as figure 2 As shown, the drainage ditch 1 is dug deep around the acid reflux field, and the drainage ditch 1 is 100 cm deep and 50 cm wide; then, the main irrigation ditch 2 and the auxiliary irrigation ditch 3 are laid horizontally and vertically inside the acid reflux field, between the main irrigation ditch 2 The interval is 50m, the ditch depth is 70cm, the ditch width is 40cm, the interval between the auxiliary irrigation ditch 3 is 30m, the ditch depth is 50cm, and the ditch width is 20cm;

[0100] (b) Plowing and violent oxygen treatment: immediately after the previous crop of rice is harvested, the plowing depth is 12cm;

[0101] (c) Wash acid and remove acid: Irrigate the rice 20 days before transplanting, with a water depth of 5cm. After soaking for 2 days, drain water thoroughl...

Embodiment 2

[0108] A water management method to reduce acid damage in acid fields, including:

[0109] (a) Drainage and irrigation system design: such as figure 2 As shown, the drainage ditch 1 is dug deep around the acid reflux field, and the drainage ditch 1 is 100 cm deep and 50 cm wide; then, the main irrigation ditch 2 and the auxiliary irrigation ditch 3 are laid horizontally and longitudinally inside the acid reflux field, between the main irrigation ditch The interval is 70m, the ditch depth is 70cm, the ditch width is 40cm, the interval between the auxiliary irrigation ditch 3 is 20m, the ditch depth is 50cm, and the ditch width is 20cm;

[0110] (b) Plowing and violent oxygen treatment: immediately after the previous crop of rice is harvested, the plowing depth is 18cm;

[0111] (c) Wash acid and remove acid: Irrigate the rice 22 days before transplanting, and the water depth is 10cm. After soaking for 3 days, drain the water thoroughly. Repeat this 3 times. After the last drain, fill...

Embodiment 3

[0118] A water management method to reduce acid damage in acid fields, including:

[0119] (a) Drainage and irrigation system design: such as figure 2 As shown, the drainage ditch 1 is dug deep around the acid reflux field, and the drainage ditch 1 is 100 cm deep and 50 cm wide; then, the main irrigation ditch 2 and the auxiliary irrigation ditch 3 are laid horizontally and vertically inside the acid reflux field, between the main irrigation ditch 2 The interval is 60m, the ditch depth is 70cm, the ditch width is 40cm, the interval between the auxiliary irrigation ditch 3 is 25m, the ditch depth is 50cm, and the ditch width is 20cm;

[0120] (b) Plowing and violent oxygen treatment: immediately after the previous crop of rice is harvested, the plowing depth is 15cm;

[0121] (c) Washing acid and removing acid: Irrigate the rice at a depth of 8cm 18 days before transplanting. After soaking for 2 days, drain water thoroughly. Repeat this process 3 times. Fill water immediately after t...

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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 present invention relates to the technical field of acid reversal field improvement, in particular to a water management method for reducing acid damage in reversing acid field. Background technique [0002] Acid reflux field is a kind of saline paddy soil with strong acid reaction in the coastal area of ​​South my country. It belongs to the genus of acid reflux paddy soil, a subcategory of saline acid paddy soil in the paddy soil category. It is a paddy soil developed on acid sulfate soil. 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 acid reflux field is very high, and its soil pH is about 3.0. The strong acid environment causes the mobility of toxic metal ions such as aluminum, manganese, copper, and arsenic in the soil to increase, while the nutrient elements such as phosphorus and potassium are absorbed and fixed. Its biological e...

Claims

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Application Information

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Patent Type & Authority Applications(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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