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Fixed-plant sampling method for determining grain filling rate from late stage of corn flakes to physiological maturity stage of grains

A physiologically mature and popcorn technology, applied in sampling devices, measuring devices, testing plants/trees, etc., can solve problems such as increased test errors, and achieve the effects of avoiding deviations and accurate and reliable test results

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

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Problems solved by technology

[0005] The present invention aims to solve the technical problem that the existing sampling method for determining the grain filling rate from the late flowering stage to the physiological maturity stage of the grain is destructive, and there may be individual differences in the plants selected in different periods, which leads to the increase of the experimental error. Provides a sampling method for determining the grain filling rate from the late stage of corn flowering to the physiological maturity of corn

Method used

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  • Fixed-plant sampling method for determining grain filling rate from late stage of corn flakes to physiological maturity stage of grains

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specific Embodiment approach 1

[0022] Specific embodiment one: present embodiment is a kind of sampling method that determines plant to measure corn flower late stage to the grain filling rate of physiological maturity of grain, specifically carries out according to the following steps:

[0023] 1. Determine the number of rows of corn cobs and the circumference of the middle of the cob:

[0024] 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;

[0025] 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;

[0026] 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 ...

specific Embodiment approach 2

[0034] Embodiment 2: This embodiment differs from Embodiment 1 in that the soft measure described in step 1 is a tape measure. Others are the same as the first embodiment.

specific Embodiment approach 3

[0035] Embodiment 3: The difference between this embodiment and Embodiment 1 or 2 is that the knife described in step 5 is a wallpaper knife. 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 the grain filling rate from late stage of corn flakes to physiological maturity stage of grains, relates to a sampling method for determining the grain filling rate of corn and aims to solve the technical problems that the conventional method for determining water content trends of grains in late growth stage of corn 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 dry weight ofto-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, andthe 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 measuring the grain filling rate of corn. 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 maize blooms, the grains attached to the cob gradually grow and develop. In order to clarify the grain filling situation, it is usually necessary to measure and analyze the grain filling rate. The grain filling rate of corn is to measure the dry weight of the grain during a certain interval from the late stage of corn flowering to the ph...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N1/04G01N33/00G01N5/04
CPCG01N1/04G01N5/04G01N33/0098
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
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