Unlock instant, AI-driven research and patent intelligence for your innovation.

Construction of a field micro-domain test model and sample collection method

A test model and construction method technology, applied in the fields of agriculture and ecological environment, can solve the problems of time-consuming, cannot be used to study the soil fertility characteristics of root system, the response of soil to fertilizer nutrients, and the test accuracy is low, so as to improve the utilization rate of fertilizer, The effect of improving crop cultivation techniques

Active Publication Date: 2015-10-28
INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI
View PDF4 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it cannot be used to study the fertility characteristics of the root soil and the response of the soil to fertilizer nutrients, as well as the supply mechanism of soil nutrients
[0006] Therefore, it is necessary to construct a new field micro-domain test model and a collection method for test soil and plants, to overcome the current problems of cumbersome layout tests, long time-consuming, and low test accuracy, and to study the interaction between crop roots and soil. , rhizosphere effects and the supply mechanism of soil nutrients provide more accurate research methods

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Construction of a field micro-domain test model and sample collection method
  • Construction of a field micro-domain test model and sample collection method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] Example 1: Influence of polyvinyl alcohol mixed polymer on the nitrogen (N) element carrying capacity and supply capacity of the tested soil, that is, the nutrient capacity and supply intensity

[0034] The field microdomain research method was used. Under planting conditions, the effects of different polyvinyl alcohol blends (PVA blends) additions on the aggregate structure and physicochemical properties of the tested soils, the content of organic-inorganic complexes of different particle sizes and the C in the complexes were quantitatively analyzed. , N content and distribution.

[0035] 1.1 Materials and methods

[0036] 1.1.1 Materials to be tested

[0037] (1) Test soil: acidic red soil and calcareous fluvo-aquic soil;

[0038] (2) Soil conditioner for test: polyvinyl alcohol blend;

[0039] (3) Tested fertilizers: conventional urea, polymer-coated urea, urea formaldehyde (UF), superphosphate, potassium chloride.

[0040] (4) Test crops: summer corn.

[0041]...

Embodiment 2

[0055] Example 2: Response of the tested soil to slow-release nitrogen fertilizer based on polyvinyl alcohol mixed polymer improvement and its nitrogen supply mechanism

[0056] 2.1 Materials and methods

[0057] 2.1.1 Materials to be tested

[0058] (1) Test soil: same as Example 1.

[0059] (2) Soil conditioner for test: same as Example 1.

[0060] (3) Test fertilizer: N fertilizer is 15 N-labeled conventional urea, 15 N-labeled polymer-coated urea (PCU), 15 N-labeled sulfur-coated urea (SCU), 15 N-labeled urea formaldehyde (UF), phosphorus and potassium fertilizers are superphosphate and potassium chloride.

[0061] (4) Test crop: same as Example 1.

[0062] The experimental treatments were designed as follows: CK (without nitrogen fertilizer), 15 N-labeled conventional urea, 15 N-labeled PCF slow-release fertilizer (polymer-coated urea), 15 N-labeled SCU slow-release fertilizer (sulfur-coated urea), 15 N-labeled UF slow-release fertilizer (urea formaldehyde), 5 ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to the field of agriculture and ecologic environment, and in particular relates to methods for establishing a field micro-domain experiment model and acquiring a sample. The method for establishing the model comprises the following steps: (1) uniformly mixing surface soil and a testing material so as to obtain a mixture; (2) inserting a tube body into a soil body below the surface, and preserving the surface height; (3) feeding the mixture into a tube of preserved height so as to form a surface soil column, and establishing an experiment soil column together with a soil column below the surface; and (4) seeding a testing plant or transplanting into the surface soil column; the method for acquiring the sample comprises the following steps: (1) sampling overall soil, that is, taking out the tube body, the experiment soil column inside the tube and the underground part of the test plant as a whole; (2) splitting the tube body together with the experiment soil column along the axis of the tube body; and (3) acquiring a soil sample and an underground part of a plant sample. The methods can avoid the influence of various indefinite factors, are precise in overall sampling, are simple and feasible, and are convenient for scientific research personnel to statistically analyze physiology and biochemistry indexes and biological characteristics of soil in different positions.

Description

technical field [0001] The invention relates to the fields of agriculture and ecological environment, in particular to a method for constructing a field micro-domain test model and a method for collecting samples. Background technique [0002] Modern balanced fertilization theory is a scientific fertilization method based on the theory of Justus von Liebig's "nutrient return theory", which is the balance between the loss and return of mineral nutrients in the soil. In the "soil-crop" ecosystem, soil provides essential mineral nutrients and micro-ecological environment for crop growth. Studies have shown that fertilizers dissolve and release nutrients under the action of soil moisture, a small part of which is directly absorbed and utilized by crops, and most of them undergo a series of physical, chemical, and biological changes in the soil, and in soil aggregates. Nutrient homeostasis is established through soil solutions. Especially in the rhizosphere of plants, a large n...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): G01N33/24G01N1/04
Inventor 王玉军黄绍文唐继伟
Owner INST OF AGRI RESOURCES & REGIONAL PLANNING CHINESE ACADEMY OF AGRI SCI