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Method for controlling salinity of medium and severe salinized soils applicable for cotton culture

A salinization and cotton technology, which is applied in field preparation methods, botanical equipment and methods, applications, etc., to achieve the effects of improving soil structure, inhibiting damage, and eliminating salt spots

Inactive Publication Date: 2014-08-13
祁通 +5
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The purpose of the present invention is to provide a method suitable for the whole process of soil salt control in moderately severe salinization of cotton cultivation. The method establishes a salt-resistance layer under the drip irrigation belt before cotton sowing, and adopts high-frequency drip irrigation technology during the growth period to establish The salt desalination area solves the water pressure caused by the large water washing salt currently applicable to the cotton planting area. Without the large water washing salt, it can achieve good cotton seedling emergence and soil salinity control during the growth period on moderately to severely salinized soil Good technical effect in the suitable range of cotton growth

Method used

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  • Method for controlling salinity of medium and severe salinized soils applicable for cotton culture
  • Method for controlling salinity of medium and severe salinized soils applicable for cotton culture
  • Method for controlling salinity of medium and severe salinized soils applicable for cotton culture

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] Example 1: A method for controlling salt in moderately salinized soil suitable for cotton cultivation

[0023] See attached figure 1 , before cotton sowing, the salinity control methods of ditching to block salt and high-frequency drip irrigation are used to control the soil salinity below the root system of cotton growth, and establish a desalination area for cotton growth. The specific method steps are as follows.

[0024] (1) Ditching: Before planting, use a ditching machine to pull the ditch. The ditch depth is 40-45 cm, the ditch width is 25-30 cm, and the ditch distance is 75-80 cm. The ditch should be straight and of the same depth.

[0025] (2) Covering with straw: crush the crop straw to a length of no more than 5cm, cover it in the ditch, cover about 10cm, fill the ditch with soil and compact it, and record the location of the ditch.

[0026] (3) For cotton sowing, the row spacing on the film is 30+45+30cm, the row spacing is 55-60cm, and the drip irrigation ...

Embodiment 2

[0032] Embodiment 2: A method for controlling salt in severely salinized soil suitable for cotton cultivation

[0033] See attached figure 1 , before cotton sowing, the salinity control methods of ditching to block salt and high-frequency drip irrigation are used to control the soil salinity below the root system of cotton growth, and establish a desalination area for cotton growth. The specific method steps are as follows.

[0034] (1) Ditching: Before planting, use a ditching machine to pull the ditch. The ditch depth is 40-45 cm, the ditch width is 25-30 cm, and the ditch distance is 75-80 cm. The ditch should be straight and of the same depth.

[0035] (2) Covering with straw: crush the crop straw to a length of no more than 5cm, cover it in the ditch, cover about 10cm, fill the ditch with soil and compact it, and record the location of the ditch.

[0036] (3) For cotton sowing, the row spacing on the film is 30+45+30cm, the row spacing is 55-60cm, and the drip irrigation...

Embodiment 3

[0040] Example 3: Soil Salinization Classification Standards and Classification

[0041] The types of soil salinization in arid areas are complex and diverse, and a single classification index cannot fully reflect the type of salinization. Therefore, according to the environmental characteristics of Xinjiang, according to the degree of damage of soil salinity to crops and the depth of groundwater table; 0-30cm soil salinity Composition, salt content, pH value, etc., established a comprehensive classification and grading index system. Table 1 and Table 2 serve as the basis for classifying saline soil types and grades.

[0042] Table 1: Classification indicators for soil salinity types

[0043]

[0044] Table 2: Classification indicators of soil salinity

[0045]

[0046] The present invention adopts a kind of method that is suitable for controlling salt in moderately severe salinized soil in cotton cultivation provided by the above-mentioned embodiment Scope of applica...

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Abstract

The invention discloses a method for controlling salinity of medium and severe salinized soils applicable for cotton culture. Before sowing of cotton, ditching is performed by means of traction, wherein ditches are straight and are consistent in depth; crop straws are crushed and then covered in the ditches, the ditches are filled and levelled up by using soils and then are compacted; during sowing of the cotton, drip irrigation zones are paved to be above the ditches according to a mulch row spacing and a junction row spacing, drip irrigation is performed immediately after sowing, an irrigation volume is 30-40m<3> / mu (1 mu equals to 0.0667 hectares); from a trefoil stage to a harvesting stage during a growth period of the cotton, a high-frequency drip irrigation method is adopted. According to the method disclosed by the invention, by means of establishing a salt resisting layer, the cotton is subjected to dry sowing and wet germination, the salt is controlled to be below the resisting layer; in a sowing area of the cotton, the salinity is controlled to be below 6g / kg, so as to guarantee germination of the cotton; during a growth period, a high-frequency drip irrigation way is adopted to establish a desalting area for growth of the cotton, so that in a soil layer of 0-30cm, the salinity is controlled to be 10g / kg, in this way, a technical problem in salinity control of medium and severe salinized soils during cotton culture is solved, and the method has an important application value.

Description

technical field [0001] The invention relates to the technical field of soil salt control, in particular to the technical field of salt control in moderately and severely salinized soil for cotton cultivation. Background technique [0002] Saline-alkali land is an important land resource. It is a soil type widely distributed on the earth, accounting for about 25% of the total land area. There are about 27 million hectares of saline-alkali land in my country, including 60 million hectares of cultivated land and 21 million hectares of saline-alkali wasteland. The development and utilization of saline-alkali land can not only expand the area of ​​cultivated land and increase the yield per unit area; it can also expand the green area, improve the ecological environment, and improve people's lives, which is of great significance to ensuring national food security and national ecological environment security. [0003] The current common improvement and utilization methods of salin...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02A01G1/00
CPCY02A40/10
Inventor 祁通刘易孙九盛黄建单娜娜杨金钰王新勇
Owner 祁通
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