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Fixed-plant sampling method for determining water content trends of grains of corn in late growth stage

A technology of water content and corn, which is applied in the direction of measuring device, sampling device, and weighing by removing certain components, can solve the problem of increasing test error, and achieve the effect of avoiding deviation and accurate and reliable test results

Inactive Publication Date: 2018-11-02
NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0009] The present invention aims to solve the technical problem that the existing method for measuring the water content dynamics of corn grains in the later stage of growth is destructive, and there may be individual differences in plants selected in different periods, which further leads to the increase of experimental errors, and provides a fixed method. A Sampling Method for Determining Moisture Content Dynamics of Maize Kernels in the Late Growth Period

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  • Fixed-plant sampling method for determining water content trends of grains of corn in late growth stage

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Experimental program
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specific Embodiment approach 1

[0026] Specific implementation mode one: present implementation mode is a kind of static sampling method of determining the grain water content dynamics in the later stage of growth of corn, specifically according to the following steps:

[0027] 1. Determine the number of rows of corn cobs and the circumference of the middle of the cob:

[0028] Push aside the bracts at the top of a corn to be tested, count the number A of the grains on the section parallel to the radial direction of the cob, and then restore the bracts to their original positions;

[0029] Use a soft ruler to measure the circumference D of the middle position of the ear on the outer wall of the bract leaf of the same corn to be tested;

[0030] The method for determining the middle position of the ear is: measure the distance L from the top of the ear of the corn to be tested to the base of the ear with a soft ruler, and the distance L / 2 from the top of the ear of the corn to be tested on the outer wall of t...

specific Embodiment approach 2

[0038] Embodiment 2: This embodiment is different from Embodiment 1 in that: the method for measuring the moisture content of the corn kernels taken off in step 5 in step 7 is a corn kernel moisture detector. Others are the same as the first embodiment.

specific Embodiment approach 3

[0039] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the method for measuring the moisture content of the corn kernels removed in Step 5 in Step 7 is the drying method. Others are the same as those in Embodiment 1 or 2.

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Abstract

The invention provides a fixed-plant sampling method for determining water content trends of grains of corn in late growth stage, relates to a sampling method for determining the water content trendsof the grains of corn in the late growth stage and aims to solve the technical problems that the conventional method for determining the water content trends of the grains in the late growth stage ofcorn is destructive and plants selected from different stages can have individual difference. The method comprises the following steps: 1, determining line number of corn ear grains and middle perimeter of corn ear; 2, calculating width B=D / A of each grain; 3, determining peeling width M of a bract; 4, determining a cutting line of the bract; 5, peeling the bract; 6, restoring the bract; 7, measuring water content of to-be-measured grains; 8, repeating steps 1-7 on the same to-be-detected corn plant at next test moment. With adoption of the fixed plant manner, test results are more accurate and more reliable, and the bract is restored after sampling, so that harm of sampling to the corn ear can be reduced to the lowest extent.

Description

technical field [0001] The invention relates to a sampling method for determining the water content dynamics of corn grains in the later stage of growth. Background technique [0002] Maize is a monocotyledonous crop, and its ear is planted in the middle and upper part of the stalk. The ear of corn usually includes three parts: the ear stalk, the bract and the ear (seed and cob). Among them, the ear stalk is a shortened stem, generally has 6-10 nodes, each node grows a bract leaf, and the bract leaf overlaps and covers the ear. The bracts are usually triangular in shape, gradually tapering upward from the junction of the base and the cob, and the top becomes sharp. [0003] After the maize blooms, the grains attached to the cob gradually grow and develop until the grains are physiologically mature, and finally the corn grains are harvested. During the whole growth and development stages of corn kernels, the moisture content of the kernels changes gradually. [0004] The ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/04G01N33/00G01N5/04
CPCG01N1/04G01N5/045G01N33/0098
Inventor 刘胜群杨小琴宋凤斌李向楠朱先灿王洋齐晓宁
Owner NORTHEAST INST OF GEOGRAPHY & AGRIECOLOGY C A S