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Chemical conditioner for improving red soil dry land

A chemical conditioning and dryland technology, applied in the field of chemical conditioning agents, can solve the problems of low production and sales costs, and achieve the effects of improving productivity, promoting soil nutrient balance, and improving soil physical and chemical properties

Inactive Publication Date: 2011-08-03
INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, there are no domestic technical records of chemical conditioners that use nanomaterials and water-retaining agents in combination, have low production and sales costs, and have the functions of regulating nutrient supply, increasing dryland crop yields, improving crop quality, and improving soil properties.

Method used

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  • Chemical conditioner for improving red soil dry land
  • Chemical conditioner for improving red soil dry land
  • Chemical conditioner for improving red soil dry land

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0011] The chemical conditioner for improving red soil dryland provided by the present invention contains magnesium oxide (MgO), nano-calcium carbonate (CaCO 3 ), potassium dihydrogen phosphate and polyacrylamide / attapulgite composite superabsorbent resin. Among them, the MgO content is 30% to 45%, and the nano-CaCO 3 The content is 15% to 20%, the content of potassium dihydrogen phosphate is 15% to 25%, and the content of polyacrylamide / attapulgite composite super absorbent resin is 30% to 45%.

[0012] Calculated on a total weight of 100 kg, light calcined powder containing 35 kg of MgO, 20 kg of nano-CaCO 3 Mix it with 15 kg of potassium dihydrogen phosphate (which needs to be ground through a 100-mesh sieve) and put it into a container, then add 30 kg of polyacrylamide / attapulgite composite super absorbent resin, and fully mix it in the container to prepare The chemical conditioner for improving red soil dry land of the present invention.

Embodiment 2

[0014] The red soil dry land was selected for the comparative experiment, and the field for the experiment was divided into 20 plots of equal area (8 × 5 = 40 m Each treatment was repeated 4 times and randomly arranged in blocks. The five treatments in the experimental design were as follows: 1) no fertilization (CK), 2) pure fertilizer (NPK), 3) pure organic fertilizer (M), 4) combined organic-inorganic fertilizer (NPK-M), 5) 5 kilograms / 667m of product of the present invention in Example 1 is added on the basis of applying purified fertilizer 2 (NPK-R). In this experiment, the soil samples taken when the first crop (maize) was harvested were measured according to the relevant methods for the number of soil aggregates and the content of organic matter, N, P and K.

[0015] In this experiment, the application rate of nitrogen fertilizer when planting corn was 12kg N / 667m 2 (folded urea 26.1kg / 667m 2 , urea is calculated according to the content of N 46%); the application a...

Embodiment 3

[0021] Choose an area of ​​1500m 2 Field plot experiments were carried out on the red soil dry land with left and right, and infertile, and the plot area was 8m×5m=40m 2 , repeated 3 times and arranged in random blocks. The product of the present invention prepared according to the method of Example 1 is used in combination with nitrogen, phosphorus and potassium fertilizers, and a comparative test is carried out on peanuts. Five treatments were set up in the experiment, namely: 1) no fertilization (CK); 2) single application of chemical fertilizer (NPK); 3) single application of organic fertilizer (M); 4) combined application of organic-inorganic fertilizer (NPK-M); 5) 5 kg / 667m of chemical conditioner of the present invention is added on the basis of single application of chemical fertilizer treatment 2 (NPK-R). After sowing the crops, observe the growth stages such as the emergence stage, flowering stage, moss stage and maturity stage. After maturity, each plot was sing...

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Abstract

The present invention relates to a chemical conditioner for improving red soil dry land. A preparation method of the chemical conditioner comprises the following steps: evenly mixing 30-45 percent of light calcined powder (MgO), 15-20 percent of nanometer CaCO3 and 15-25 percent of monopotassium phosphate (grinded to 100 mesh sieves), filling the mixture into a container, and adding 30-45 percent of polyacrylamide / attapulgite clay compound super absorbent resin to mix evenly in the container. The chemical conditioner can supplement elements such as calcium and magnesium lapsed in soils, promotes balance of soil nutrients, improves productivity of soils, and effectively solves the problems of poor crop growth and low output caused by serious shortage of medium elements such as calcium and magnesiumin the red soil dry land in China and frequent regional and seasonal drought, thereby having wide application prospect in crops of red soil dry lands.

Description

technical field [0001] The invention relates to a chemical conditioner for improving soil physical and chemical properties, in particular to a chemical conditioner which can adjust the acidity of red soil dry land, promote nutrient balance, and improve soil water retention and water supply. Background technique [0002] In the red soil area of ​​southern my country, affected by various factors such as high temperature, rainy environmental conditions and soil-forming parent materials, cations such as potassium, calcium, and magnesium in the soil are easily lost through migration, leaching, etc. It is easy to combine with iron and aluminum to form iron phosphate and aluminum compounds with low effectiveness, resulting in lack of soil nutrients, strong acidity, poor structure, and weak water retention capacity. One of the reasons is that this phenomenon is particularly prominent in red soil drylands. The dry land area of ​​red soil in southern my country is about 200 million mu,...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09K17/40
Inventor 曾希柏罗尊长高菊生白玲玉李莲芳孙楠
Owner INST OF ENVIRONMENT & SUSTAINABLE DEV IN AGRI CHINESE ACADEMY OF AGRI SCI