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Alkali-removing modifying method far alkaline land

A technology for saline-alkali land and land, applied in soil drainage, application, construction, etc., can solve the problems of long period of alkali change, loss of fertility, poor effect of alkali change, etc., and achieve the effect of good effect, small investment and short cycle.

Inactive Publication Date: 2009-06-17
张耀文
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Through long-term observation by the inventors, it is found that methods 1 and 3 have the disadvantages of poor effect of alkali modification, method 2 has the disadvantages of large investment and serious loss of fertility, and method 4 has the disadvantages of large investment and ineffective effect
Above-mentioned three kinds of methods all highlight the problem that there is a long period of alkali modification

Method used

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  • Alkali-removing modifying method far alkaline land
  • Alkali-removing modifying method far alkaline land

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] Embodiment one, such as figure 1 As shown in -4, the method for improving alkali drainage in saline-alkali land of the present invention comprises the following steps successively: leveling the land, excavating deep ditches with a depth of 29-60 centimeters at an interval of 0.4-8 meters, and the deep ditches are parallel ditches crossing vertically and horizontally, wherein the ditches There are many, one horizontal ditch, and a layer of sand with a thickness of 3-27 cm is buried at the bottom of the deep ditch to form an underground alkali-discharging sand ditch 1; deep plowing and making the furrow 16-33 cm deep, when deep plowing Scatter 3-10 centimeters of thick broken straw layer 2 in the furrow; dig the alkali drainage ditch 3 connected with the underground alkali drainage sand ditch 1, beat the ground 4, divert water for irrigation and alkali drainage. The cross-section of the sand layer buried in the deep trench is narrow at the top and wide at the bottom. In ...

Embodiment 2

[0015] Embodiment 2, the method for improving alkali drainage in saline-alkali land of the present invention comprises the following steps successively: leveling the land, excavating deep ditches with a depth of 26-60 cm at an interval of 0.4-8 meters, the deep ditches are unidirectional parallel ditches, Fill a layer of sand with a thickness of 3-37 cm at the bottom of the ditch to form an underground alkali drainage ditch; dig an alkali drainage ditch connected with the underground alkali drainage ditch, dig the ground, and divert water for irrigation and alkali drainage. The cross-section of the sand layer buried in the deep trench is narrow at the top and wide at the bottom. In heavy saline-alkali land, first remove the salinized topsoil layer of 1-7 cm on the land surface, and then level the land. After the first water diversion to irrigate and drain the alkali, then plow the land and water to drain the alkali. Plowing, watering, washing, upper row and lower seepage, plo...

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Abstract

The invention relates to alkali discharging improved method for saline land. The trench is one way paralleled or crossed vertically and horizontally with different density. Its bottom is filled with a layer of sand with 3-37cm thickness to form underground alkali discharging sand trench connected with alkali discharging trench, drew water to discharge alkali. The trench is 29-60cm. Its bottom is filled with a layer of sand with 3-27cm thickness. Deep plowing is processed to make furrow depth reach 16-33cm in which the broken stalk or sand is splashed with 3-10cm. The invention has the advantages of little investment, good effect, short circle etc.

Description

technical field [0001] The invention relates to a method for improving alkali discharge in saline-alkali land. Background technique [0002] At present, the commonly used methods for improving alkalinity in saline-alkali land mainly include: 1. Flood irrigation method of alkali drainage ditch, 2. Flood irrigation method of embedding alkali discharge pipes, 3. Method of removing surface saline-alkali layer, 4. In addition, some people have applied for The national patent of flood irrigation method for alkali drainage wells. Through long-term observation by the inventor, it is found that methods 1 and 3 have the disadvantages of poor alkali-improving effect, method 2 has the disadvantages of large investment and serious loss of fertility, and method 4 has the disadvantages of large investment and ineffective effect. Above-mentioned three kinds of methods all highlight the problem that there is long period of changing alkali. Contents of the invention [0003] The purpose o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B09C1/02B09C1/00E02B11/00
Inventor 张耀文张耀杰张耀萍
Owner 张耀文