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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: 2009-10-07
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 dry land provided by the invention contains magnesium oxide (MgO), nanometer calcium carbonate (CaCO 3 ), potassium dihydrogen phosphate and polyacrylamide / attapulgite clay composite superabsorbent resin. Among them, the MgO content is 30% to 45%, and the nano-CaCO 3 The content is 15%-20%, the content of potassium dihydrogen phosphate is 15%-25%, and the content of polyacrylamide / attapulgite clay composite superabsorbent resin is 30%-45%.

[0012] According to the total weight of 100 kg, lightly burnt powder containing 35 kg of MgO, 20 kg of nano-CaCO 3 Mix evenly with 15 kg of potassium dihydrogen phosphate (need to be ground through a 100-mesh sieve) and put it into a container, then add 30 kg of polyacrylamide / attapulgite clay composite superabsorbent resin, and mix thoroughly in the container to prepare The chemical conditioner for improving red soil upland of the present invention.

Embodiment 2

[0014] The red soil dry land was selected for comparative experiments, and the field for the test was divided into 20 plots (5 plots as a group, 4 groups in total) of equal area (8×5=40 square meters), corn was used as the experimental crop, and each Each treatment was repeated 4 times and arranged in random blocks. The five treatments in the experimental design were: 1) no fertilization (CK), 2) pure fertilizer application (NPK), 3) pure organic fertilizer application (M), 4) organic-inorganic fertilizer application (NPK-M), 5) increase application of 5 kilograms / 667m of the product of the present invention in embodiment 1 on the basis of applying pure fertilizer 2 (NPK-R). In this test, the soil samples taken when the first crop (corn) was harvested were determined according to the relevant methods for the number of soil aggregates and the contents of organic matter, N, P, and K, etc.

[0015] In this experiment, the amount of nitrogen fertilizer applied when planting corn...

Embodiment 3

[0021] Choose an area within 1500m 2 The field experiment was carried out on the red soil dry land with poor fertility, and the area of ​​the plot was 8m×5m=40m 2 , repeated 3 times, arranged in random blocks. The product of the present invention prepared according to the method of Example 1 is used in conjunction with nitrogen, phosphorus and potassium chemical 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) Add 5 kilograms / 667m of chemical conditioner of the present invention on the basis of single application of chemical fertilizer 2 (NPK-R). After the crops are sown, observe their growth stages such as the emergence stage, flowering stage, moss stage and maturity stage. After maturity, the economic yield and ...

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Abstract

The 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 magnesium in the red soil dry lad 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 capable of regulating soil acidity in red soil upland, promoting nutrient balance, and improving soil water retention and water supply. Background technique [0002] In the southern red soil area of ​​my country, affected by various factors such as high temperature, rainy environmental conditions and soil parent materials, cations such as potassium, calcium, and magnesium in the soil are easily lost through migration, leaching, and other ways. Phosphate ions 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. This is also an important reason for the low yield, poor quality and difficult soil cultivation of crops in this area. One of the reasons is that ...

Claims

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Application Information

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Patent Type & Authority Applications(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
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