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Method for improving saline soil with biochar

A technology of saline soil and biochar, applied in the fields of soil preparation methods, applications, agricultural machinery and implements, etc., can solve the problems of unknown effects, affecting soil properties, crop growth, and differences in the impact of harvest benefits, etc.

Inactive Publication Date: 2019-01-11
QINGDAO AGRI UNIV
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  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, because saline-alkali soil has a high pH value and contains more water-soluble salts, which affect soil properties and crop growth, the effect of using biochar to repair saline-alkali soil is still unknown
And some scholars believe that the application of the same biochar to different types of crops has different effects on harvest efficiency.

Method used

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  • Method for improving saline soil with biochar
  • Method for improving saline soil with biochar
  • Method for improving saline soil with biochar

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Experimental program
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Effect test

Embodiment Construction

[0012] The present invention will be described in detail below in combination with specific embodiments.

[0013] 1 Materials and methods

[0014] 1.1 Test material

[0015] The test crops were cotton (Lumian 11, bred by Shandong Cotton Research Center) and Chinese cabbage (Qingdao Shumiaolin Company).

[0016] The test soil was collected from the saline soil in Hekou District, Dongying City, Shandong Province. Select a representative plot, follow the "S"-shaped route, collect 0-20cm soil at multiple points, mix the samples thoroughly, and pass through a 2mm sieve after natural air drying for later use.

[0017] The biochar needed in the experiment was fired from wood, the nitrification inhibitor was developed and provided by the Shenyang Institute of Ecology, Chinese Academy of Sciences, and the calcium sulfate was purchased by a reagent company.

[0018] 1.2 Experimental design

[0019] The pot experiment was carried out from April to September 2017 at the Experimental F...

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Abstract

The invention discloses a method for improving saline soil with biochar. Biochar is added to planting saline soil, conventional fertilization is carried out, and calcium sulfate is added. In the conventional fertilization, a compound fertilizer composed of N, P2O5 and K2O at a ratio of 15: 15: 15 is applied. The compound fertilizer is applied at 750kg / hm<2>, and urea is top-dressed at 225kg / hm<2>.Nitrification inhibitor is added according to 0.7% of the total amount of N. Biochar is added at 4500kg / hm<2>. Calcium sulfate is added at 7500kg / hm<2>. The additives are well mixed with the soil, and then, base fertilizer is applied. Compared with conventional fertilization, biochar promotes the growth of pakchoi and cotton and improves part of the physical and chemical properties of saline soil.

Description

technical field [0001] The invention belongs to the technical field of soil improvement and relates to the effect of biochar improvement of saline soil on the growth and photosynthesis of pakchoi and cotton. Background technique [0002] At present, the saline-alkali land area in my country reaches 99.13 million hm 2 , Soil salinization has become a key problem in the soil environment. Saline-alkali land is not conducive to the growth and development of crops, affects the nutrient absorption of plants, causes crop growth to decline, and even dehydrates and dies. Soil salinization also leads to the emergence of a large number of low-yield fields, making it difficult to use soil resources, reducing the comprehensive agricultural production capacity, and seriously affecting agricultural production and farmers' living standards. At present, soil salinization is still one of the main obstacles restricting the development of agriculture and forestry in my country. The continuou...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01B79/02
CPCA01B79/02
Inventor 曾路生宋祥云于桂玲崔德杰
Owner QINGDAO AGRI UNIV