Method of using desulfurized gypsum to improve saline-alkali soil under drip irrigation
A technology for desulfurizing gypsum and saline-alkali soil, which is applied in the fields of land preparation, application, agriculture, etc. It can solve the problems of wasting water resources and the inability to implement alkali drainage canals, etc., and achieve the goal of improving saline-alkali soil, reducing land occupation and secondary pollution Effect
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Embodiment 1
[0027] A method of using desulfurized gypsum to improve saline-alkali soil under drip irrigation, which is characterized by strict requirements on the application amount, application time, application method and irrigation quota of desulfurized gypsum, which achieves the purpose of saving water and improving saline-alkali soil . Its steps are as follows:
[0028] 1. Determination of the application amount of desulfurization gypsum: Sampling the farmland, taking the soil sample of 0-20cm soil layer back to the laboratory, passing it through a 1mm sieve after natural air drying, and testing the conductivity (EC), pH and The degree of alkalization was tested, and the application amount of desulfurized gypsum was determined according to the test results. For the specific application amount of desulfurized gypsum, refer to Table 1.
[0029] Table 1 Reference table of application amount of desulfurized gypsum
[0030]
[0031] 2. Application time of desulfurization gypsum: Desu...
Embodiment 2
[0038] Example 2: Applying the method of the present invention to saline-alkali soil in Dongmaidi Village, Manas County, Xinjiang and its effect verification
[0039] In April 2013, an experiment was carried out on a piece of newly reclaimed saline-alkali soil in Dongmaidi Village, Manas County, Xinjiang. The experiment process is as follows:
[0040] 1. Two treatments were set up in the experiment, application of desulfurization gypsum under the condition of drip irrigation under the film and no application of desulfurization gypsum (CK) under the condition of drip irrigation under the film.
[0041] 2. On April 6, 2013, according to the "S-type" sampling route of the experimental site, a soil sample of 0-20cm was taken, brought back to the laboratory, let it dry naturally, and passed through a 1mm sieve. The electrical conductivity (EC), pH and alkalinity of the soil sample were detected, the detection method is as follows, and the detection results are shown in Table 3:
...
Embodiment 3
[0056] Embodiment 3: The saline-alkali soil of the 150 Tuanliang 1 Company of the Eighth Division of Xinjiang is applied to the method of the present invention and its effect verification
[0057] Cotton planting experiments were carried out in the saline-alkali soil of the 150th regiment Liang 1 company of the Eighth Division of Xinjiang. The experimental process is as follows:
[0058] 1. Two treatments were set up in the experiment, application of desulfurization gypsum under the condition of drip irrigation under the film and no application of desulfurization gypsum (CK) under the condition of drip irrigation under the film.
[0059] 2. On April 1, 2015, according to the "S-type" sampling route of the experimental site, a soil sample of 0-20cm was taken, brought back to the laboratory, let it dry naturally, and passed through a 1mm sieve. The electrical conductivity (EC), pH and alkalinity of the soil samples were tested. The detection method is as follows, and the test re...
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