CN112014132A - Test evaluation method of northern tea leaf picking machine - Google Patents
Test evaluation method of northern tea leaf picking machine Download PDFInfo
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Abstract
A test evaluation method of northern tea leaf picking machinery relates to the technical field of tea leaf picking test methods, in particular to a test evaluation method of northern tea leaf picking machinery. Selecting a tea garden; selecting a standard mature tea garden with uniform tea tree varieties, consistent growth environment, consistent tea crown height and breadth and consistent row spacing as an experiment base; verifying the machine tool; the prototype cannot be replaced during the test period; selecting an operator; detecting no load; evaluating a picking process; obtaining the quality evaluation of the tea; measuring the productivity; measuring the energy consumption rate; starting and stopping and switch checking; the inspection judges that the tea leaf picking machine comprises: checking the safety label; evaluating safety; evaluating the excellence; the evaluation result is fairer, fair and reasonable, and reasonable suggestions are provided for the research and development of tea picking machines and the tea garden proper-organized cultivation management, and a foundation is laid for establishing a whole-process mechanized technical mode and technical specifications (standards) meeting the production and processing of the tea in the north.
Description
Technical Field
The invention relates to the technical field of tea picking test methods, in particular to a test evaluation method for northern tea picking machines.
Background
In the development process of the tea industry, the wide application of tea machinery provides an important material basis for the industrial development of tea, plays an important role in promoting the rapid development of the tea industry, and is still unbalanced and incomplete in the overall development process. Firstly, the labour is in short supply, and the expense is high, and tea garden "recruitment is wastefully". Tea picking is an important work with the most intensive labor, the most time-consuming work and the strongest seasonality in tea garden production management, most of tea picking still adopts the traditional manual picking mode, the labor demand is extremely high, and the development of cost saving, efficiency increasing and quality improving increment in tea production and processing is seriously restricted. In addition, the tea picking is not stable manually and different in picking technology, so that the phenomena of less picking, missed picking and excessive rough picking of summer and autumn tea are serious, the quality of fresh tea leaves is difficult to be unified and standard, and the quality of dry tea is difficult to guarantee. Secondly, the manual picking efficiency is low, and the timeliness of tea picking is difficult to ensure. In northern China, the plain language of 'toutianbao, tiancao' refers to tea buds, the manual picking efficiency is low, and the picking speed of tea leaves is inevitably influenced. The mechanical tea picking is a tea picking method which replaces manual tea picking by a machine through the matching of three elements of 'garden, machine and human'. Practice proves that mechanical tea-picking can obviously improve work efficiency, save cost and improve yield, fundamentally solves the problem of shortage of tea-picking labor force, has obvious economic benefit and social benefit, and is a necessary way for continuous and healthy development of tea industry. Thirdly, the requirements on the tea plucking machine are inconsistent due to the difference between the south and the north. The tea leaves in the south and the north show different characters due to factors such as production modes, for example, the tea leaves in the north have uneven growth vigor after wintering, inconsistent tea bud sizes and irregular radian of tea fluffy surfaces. In addition, the tea is not picked in summer in the south, while the tea is picked in summer in the north, and the tea picker introduced into the south is not necessarily suitable for picking the tea in the north. Therefore, a set of scientific test evaluation method suitable for northern tea leaf picking machines is helpful for screening out the most suitable northern tea leaf mechanized picking machine type, and has extremely important significance for promoting northern tea leaf production and processing mechanical process.
Disclosure of Invention
The invention aims to provide a test evaluation method for northern tea leaf picking machines so as to achieve the purpose of selecting tea leaf picking machines suitable for northern areas.
The invention provides a test evaluation method for northern tea leaf picking machinery, which is characterized by comprising the following steps of:
selecting a tea garden;
selecting a standard mature tea garden with uniform tea tree varieties, consistent growth environment, consistent tea crown height and breadth and consistent row spacing as an experiment base;
step (2) verifying the machine tool;
the tea leaf picking machine and the accessory thereof which participate in the test evaluation are installed and debugged according to the specification of the use instruction, and the normal state is confirmed; the prototype cannot be replaced during the test period;
step (3), selecting an operator;
the operators randomly select the tea leaves from the operators who are familiar with the structure and the performance of the tea leaf picking machine and can correctly use the operation;
step (4) no-load detection;
carrying out no-load test on the tea picking machine at a rated rotating speed, measuring no-load noise, vibration and bearing temperature rise, carrying out item scoring, and then comprehensively calculating a score alpha;
step (5) evaluating the picking process;
collecting the loss rate and the missing picking rate of the tidying tea leaf picking machine in unit time, and further obtaining a loss rate evaluation score c and a missing picking rate evaluation score d;
step (6) obtaining tea quality evaluation;
randomly weighing samples of unit mass from the fresh leaves picked in the step (5), calculating the bud leaf integrity rate and the tea making rate, and obtaining a bud leaf integrity rate evaluation score a and a tea making rate evaluation score b;
step (7) productivity measurement;
calculating the productivity in a unit time period for the tea leaf picking machines participating in the picking process, and obtaining a productivity evaluation score gamma;
step (8), measuring the energy consumption rate;
calculating the energy consumption rate of the tea leaf picking machine participating in the picking process, namely the energy consumed by picking unit quantity of fresh tea leaves, and obtaining corresponding energy consumption rate evaluation scores;
step (9) starting and stopping and switch checking;
checking and judging whether the tea leaf picking machine can reliably cut off power transmission;
step (10), checking and judging the following components in the tea leaf picking machine:
a) whether the high-temperature part of the gasoline engine is provided with an effective thermal protection device or not; whether the exposed rotating and transmission part is fixedly arranged or not is determined; a safety protection device without sharp corners and sharp edges;
b) whether the motor has an over-current protection device or not; whether the power lead has insulation protection measures or not; whether the storage battery has rainproof measures or not; whether all the electric terminals are protected and not exposed;
step (11), safety marking inspection;
a) whether safety signs are arranged at obvious positions near a blade of the tea leaf picking machine and a high-temperature department of the gasoline engine or not;
b) whether safety precautions are noted in the product use instruction of the tea leaf picking machine;
step (12) safety evaluation;
all the steps (9) to (11) are qualified, no safety accident occurs in the steps (4) to (5), and the safety accident occurs, so that the excellent performance evaluation is participated, otherwise, the test evaluation is terminated;
step (13) evaluating the excellence;
the goodness evaluation = no-load detection score α + job quality score β + productivity evaluation score γ + energy consumption rate evaluation score; the obtained goodness evaluation score is the evaluation score of the tea leaf picking machine participating in test evaluation; wherein the work quality β = bud leaf integrity rate evaluation score a + tea-making availability rate evaluation score b + loss rate evaluation score c + miss rate evaluation score d.
Further, repeating the step (5) and the step (6) for 3-5 times, and then taking the average value as test data of loss rate, missing harvest rate, bud and leaf integrity rate and tea making rate.
Further, the step (4) of no-load detection scoring and comprehensive calculation scoring alpha is realized by: continuously operating the tea picking machine at a calibrated rotating speed for 30min, keeping the temperature rise of the bearing part less than or equal to 40 ℃, and recording 1 minute, otherwise, recording 0 minute; the temperature rise on the surface of the reduction gearbox is less than or equal to 35 ℃, 1 minute is counted, and otherwise 0 minute is counted; recording 1 point when the noise of the tea plucker is less than 90dB (A), otherwise recording 0 point; the vibration at the handle is less than 2.9 (g =9.81m/s 2), and the score is 1, otherwise the score is 0.
Further, the evaluation score a for bud leaf integrity rate, the evaluation score b for tea-making availability rate, the evaluation score c for loss rate and the evaluation score d for missing harvest rate in the steps (5) and (6) are obtained as follows: the bud leaf integrity rate is less than 60%, the score is 0, 60-78%, the score is 1, the score is more than 78%, and the score is 2; the tea making rate is less than 85%, and is counted for 0, 85-93%, and is counted for 1, more than 93%, and is counted for 2; the mining leakage rate is more than 1.2 percent, the score is 0, the score is 1.0-1.2 percent, the score is 1, the score is less than or equal to 1.0 percent, and the score is 2; the loss rate is more than 1.2%, mark 0 score, 1.0-1.2%, mark 1 score, less than or equal to 1.0%, mark 2 score.
Further, the productivity evaluation score γ obtained in step (7) is obtained by: the productivity (kg/(m.h)) of the single portable tea plucking machine in unit width hour is less than 180, and is recorded for 0, 180 and 190, and is recorded for 1, and is recorded for 2, and the productivity is recorded for 2; the productivity (kg/(m.h)) of the double-person lifting type tea picking machine in width per hour is less than 270, and is recorded for 0, 270 and 280, recorded for 1, and is recorded for 2, and the productivity is greater than 280.
Further, the energy consumption rate evaluation score obtained in step (8) is obtained by: the standard coal (tce) is greater than 20, marked as 0 point, 10-20 points, marked as 1 point, less than 10 points and marked as 2 points.
According to the test evaluation method for the northern tea leaf picking machine, during specific operation, a local standard mature tea garden (demonstration garden) is selected as an experiment base, test verification and comparison evaluation is carried out on the picking machines of different manufacturers of the same type, a mathematical model is established by collecting and analyzing related technical parameters, and a quantitative goodness evaluation value is obtained, so that the machine type which best meets the northern tea leaf mechanized picking is selected, interference of human factors can be eliminated, the evaluation result is fair, fair and reasonable, reasonable suggestions are provided for research and development of the tea leaf picking machine and tea garden proper-organized cultivation management, and a foundation is laid for establishing a whole-course mechanized technical mode and technical specifications (standards) meeting the northern tea leaf production and processing.
Detailed Description
Example (b):
first, preparation and testing procedure
The experimental base needs to be a strip-sowing regular tea garden with smooth ground, good tea tree growth, tidy canopy surface, 70 cm-90 cm tree height, 20-30 cm line-to-line operation road width, tea line length greater than 30m and dry-raw tea yield per mu of 100 kg-150 kg; the area of the tea garden can meet the measurement requirements of each test item. The method is characterized in that 18 rows of grown tea rows are reserved, each row is reserved with an operating face with the length of 20 meters, the mechanical picking area is pre-trimmed according to different types of picking machines (or brand differences of different manufacturers) 10-15 days in advance, and meanwhile, a popular (or universal) trimmer is adopted for pre-trimming, so that the consistency of data such as the operating face, the tea bud emergence, the bud and leaf completeness and the like is ensured.
The basic conditions of the tea garden were investigated before the test, and the contents of the investigation include tea plant species, tree age, planting manner, height, tree width, growth vigor, canopy shape, working conditions and area, etc., and are shown in table 1-1.
TABLE 1-1 questionnaire of tea garden basic conditions (as record of selected tea garden)
Tea garden basic condition questionnaire
Test site: investigation date:
four types of picking machines of 2 manufacturers, such as an electric tea picking machine, a small electric picking machine, a single tea picking machine, a double tea picking machine (arc-shaped or flat-shaped) and the like, which are commonly used in local tea production, are selected as test evaluation objects in the embodiment. And respectively comparing and verifying the operation data, extracting relevant data to carry out comprehensive evaluation demonstration, and measuring main technical parameters of a test prototype before testing and recording the main technical parameters into tables 1-2.
Table 1-2 main parameter record table of test prototype
Main parameter recording table of test prototype
Machine name and model:numbering a prototype:
manufacturing unit:and (3) measuring date:
leaf collection mode:measurement site:
the test operator should randomly select a person familiar with the structure and performance of the tea plucker to use the implement correctly.
The installation and debugging of the prototype are carried out according to the specification of the tea-leaf picker, the test can be carried out after the prototype is confirmed to reach the normal state, and the prototype cannot be replaced randomly during the test. Before the loading test, an air transportation test is carried out for 30min at a rated rotating speed, and the test time, no-load noise, vibration and bearing temperature rise are measured; when loading test is carried out, the tea row is not less than 20m each time. And cleaning the sample machine after each test is finished, and immediately carrying out the next test. Wherein, the tea plucker continuously works for 30min under the calibration rotating speed, the temperature rise of the bearing part is less than or equal to 40 ℃, and the score is 1, otherwise, the score is 0; the temperature rise on the surface of the reduction gearbox is less than or equal to 35 ℃, 1 minute is counted, and otherwise 0 minute is counted; recording 1 point when the noise of the tea plucker is less than 90dB (A), otherwise recording 0 point; less than 2.9 (g =9.81 m/s) of vibration at the handle2) Recording 1 point, otherwise recording 0 point; the above items are respectively scored, and then the total calculation score is the no-load detection score alpha.
Table 1-3 table for recording vibration, noise and temp. rise of test sample machine
Vibration, noise and temperature rise recording meter for test prototype
Machine name and model:numbering a prototype:and (3) measuring date:measurement site:
weather conditions:environmental noise:the measurement personnel:
100 g of fresh leaves picked by an electric tea picking machine, a small electric tea picking machine, a single tea picking machine and a double tea picking machine are randomly weighed to carry out data determination such as bud and leaf integrity rate, tea preparation rate, loss rate, missing rate and the like, each comparison test is repeated for 3 times, and then the average value is taken. The performance verification index of the test prototype is recorded into the table 1-4, and the composition analysis of the fresh leaf picking machine is recorded into the table 1-5. According to the calculated values of the bud leaf integrity rate, the tea making rate, the loss rate and the missing picking rate, corresponding evaluation scores are obtained, and are shown in the attached tables 1-4.
a) The bud and leaf integrity rate is calculated according to the formula (1):
in the formula:
R1-bud leaf integrity,%;
W1the mass of the complete bud and leaf is g, and the complete young shoots refer to harvested complete and undamaged young shoots and single shoots;
w is the total mass of the sample, and the unit is g.
Attached table 1: evaluation score of bud leaf integrity A
| Bud leaf integrity ratio R1 (%) | ＜60 | 60-78 | ＞78 |
| Evaluation score of bud leaf integrity A | 0 | 1 | 2 |
b) The tea making rate is calculated according to the formula (2):
in the formula:
R2percent of available tea production;
W2the unit of the mass of old stems, old leaves and broken stems is g, and the old stems, old leaves and broken stems refer to stems and leaves which are lignified and can not be used for making tea.
Attached table 2: evaluation score b of tea-making efficiency
| Tea-making rate R2 (%) | ＜85 | 85-93 | ＞93 |
| Evaluation of tea-making efficiency | 0 | 1 | 2 |
c) Determination of loss Rate
（3）
in the formula:
R3-loss rate,%;
W3measuring the mass of the fresh leaves collected in the machine section, wherein the unit is g;
W4measuring the total mass of the fresh shoots and the single tea leaves which can be made and are scattered in the section, wherein the unit is g.
Attached table 3: loss rate evaluation score c
| Loss ratio R3 (%) | ＞1.2 | 1.0-1.2 | ＜1.0 |
| Loss rate evaluation score c | 0 | 1 | 2 |
d) Determination of the rate of missed mining
After mechanical mining, the undelivered young sprout leaves on the cutting surface are missed, five measuring sections are randomly taken in a cut test field, each section is 1m long, the undelivered young sprout is subjected to manual auxiliary mining and weighing, and the calculation is carried out according to the formula (4):
in the formula:
R4-missed extraction rate,%;
W5and measuring the mass of the artificially auxiliary picked fresh leaves in the section, wherein the unit is g.
Attached table 4: evaluation score d of extraction leakage rate
| Percentage of missing harvest R4 (%) | ＞1.2 | 1.0-1.2 | ＜1.0 |
| Evaluation score d of extraction leakage rate | 0 | 1 | 2 |
Table 1-4 test prototype performance verification index recording table
Test prototype performance verification index recording table
Measurement site: and (3) measuring date:
| test prototype Model number | Tea plucking assembly Heavy (kg) | When picking tea Long (h) | Throw new shoots Volume (kg) | Loss of power Percentage (%) | Loss per mu (kg/mu) | Assisted mining by hand Amount of tea (kg) | Missed mining Percentage (%) | Missed yield per mu (kg/mu) |
TABLE 1-5 mechanical composition analysis and record table for fresh leaves picked by machine
Mechanical composition analysis recording table for picking fresh leaves by machine
Machine name and model:the manufacturer:
measurement site:and (3) measuring date:
note 1: the complete young sprout refers to a picked complete and undamaged young sprout and a single sprout;
note 2: the old stem and the old leaf refer to stems and leaves of lignified tea which cannot be made.
And (3) counting the total mass of the picked fresh leaves after mechanical picking is finished, measuring the width of the cutting knife of the tea picking machine, calculating the productivity of the tea picking machine in unit width hour in the picking process, and obtaining the productivity evaluation score gamma according to an attached table 5.
The productivity per width hour was calculated by the following equation (5), and the measurement results are shown in tables 1 to 6:
in the formula:
E2productivity in kg/(m.h) per width hour;
W6the total mass of the mechanically-harvested fresh leaves is kg;
b, cutting width of a cutting knife of the tea plucking machine is m.
Attached table 5: productivity evaluation score γ
Tables 1-6 statistical tables for productivity measurements
Productivity measurement statistical table
Machine name and model:the manufacturer:
measurement site:and (3) measuring date:
measuring the power consumption rate and the fuel oil consumption rate: the fuel consumption rate of the general small gasoline engine is mainly used for measuring the hourly fuel consumption and the hundred kilograms fuel consumption by using a weighing method. Before the test, the sample machine is filled with oil, the mass of the sample machine is weighed and recorded, after the test is finished, the mass of the sample machine is weighed again, and the difference between the two is the oil consumption (measured by standard coal) of the test. The electric power consumption of the electric tea plucking machine is mainly measured by using an ammeter, wherein the electric power consumption is measured in one hundred kilograms. And (3) fully charging the prototype before the test, measuring the residual electric quantity by using a universal meter after the test is finished, and obtaining the difference between the residual electric quantity and the residual electric quantity as the power consumption (measured by standard coal) of the test. Corresponding energy consumption evaluation scores are obtained according to the standard coal, and are shown in an attached table 6.
Hourly oil consumption:
in the formula:
G1-oil consumption per hour, kg/h;
g is total oil consumption in kg.
Attached table 6: energy consumption evaluation score
| Standard coal tce | ＞20 | 10-20 | ＜10 |
| Energy consumption evaluation score δ | 0 | 1 | 2 |
Through the statistics of test data, the relevant technical indexes of the tea picking machine are compared and shown in tables 1-7;
TABLE 1-7 analysis of main Performance indicators of tea plucking machine
Analysis of main performance indexes of tea leaf picking machine
Second, evaluation of safety
1. Start-stop and switch test
And judging whether the tea plucking machine can reliably cut off power transmission.
2. Safety protection
a) The high-temperature part of the gasoline engine is provided with an effective thermal protection device; the exposed rotating and transmission parts which can be touched by the operation and related personnel are provided with a safety protection device which is firmly fixed and has no sharp corners and sharp edges.
b) The electric tea plucking machine should have an overcurrent protection device, and the power wire should have an insulation protection measure. The storage battery should have a rainproof measure, and all the electric terminals should be protected and not be exposed.
3. Security annotation inspection
a) The tea plucking machine should set safety signs at the obvious positions near the high-temperature departments of the blade and the gasoline engine, and the safety signs should meet the regulations of GB 10396. The safety sign should briefly indicate the degree of danger, the consequences of danger, safety measures for avoiding danger, and the like.
b) Safety precautions should be taken in the product use instruction, and the safety mark and the pasting position set by the product should be reproduced and described in the use instruction.
The safety evaluation is all qualified, no safety accident generator is generated in the test process, the safety accident generator participates in the fine evaluation, and otherwise, the test evaluation is terminated;
TABLE 2-1 safety Performance inspection Table
Safety performance inspection table
Machine name and model:the manufacturer:
measurement site:and (3) measuring date:
third, evaluation of Excellent Properties
And (4) evaluating the excellence = no-load detection score α + operation quality evaluation score β + productivity evaluation score γ + energy consumption rate evaluation score, and the obtained excellence evaluation score is the evaluation score of the tea leaf picking machine participating in test evaluation. Wherein the work quality β = bud leaf integrity rate evaluation score a + tea-making availability rate evaluation score b + loss rate evaluation score c + miss rate evaluation score d.
Through the analysis, reasonable weight of single index is set, comprehensive evaluation and sequencing optimization are carried out on the tea picking machine by quantitative goodness evaluation values, and improvement and selection opinions are provided. The machine type which best meets the mechanized picking of the tea in the north is selected, reasonable suggestions are further provided for proper mechanized cultivation management of the tea garden, and detailed and complete verification reports of the mechanized technology of tea picking are compiled.
Claims (6)
1. A test evaluation method for northern tea leaf picking machinery is characterized by comprising the following steps:
selecting a tea garden;
selecting a standard mature tea garden with uniform tea tree varieties, consistent growth environment, consistent tea crown height and breadth and consistent row spacing as an experiment base;
step (2) verifying the machine tool;
the tea leaf picking machine and the accessory thereof which participate in the test evaluation are installed and debugged according to the specification of the use instruction, and the normal state is confirmed; the prototype cannot be replaced during the test period;
step (3), selecting an operator;
the operators randomly select the tea leaves from the operators who are familiar with the structure and the performance of the tea leaf picking machine and can correctly use the operation;
step (4) no-load detection;
carrying out no-load test on the tea picking machine at a rated rotating speed, measuring no-load noise, vibration and bearing temperature rise, carrying out item scoring, and then comprehensively calculating a score alpha;
step (5) evaluating the picking process;
collecting the loss rate and the missing picking rate of the tidying tea leaf picking machine in unit time, and further obtaining a loss rate evaluation score c and a missing picking rate evaluation score d;
step (6) obtaining tea quality evaluation;
randomly weighing samples of unit mass from the fresh leaves picked in the step (5), calculating the bud leaf integrity rate and the tea making rate, and obtaining a bud leaf integrity rate evaluation score a and a tea making rate evaluation score b;
step (7) productivity measurement;
calculating the productivity in a unit time period for the tea leaf picking machines participating in the picking process, and obtaining a productivity evaluation score gamma;
step (8), measuring the energy consumption rate;
calculating the energy consumption rate of the tea leaf picking machine participating in the picking process, namely the energy consumed by picking unit quantity of fresh tea leaves, and obtaining corresponding energy consumption rate evaluation scores;
step (9) starting and stopping and switch checking;
checking and judging whether the tea leaf picking machine can reliably cut off power transmission;
step (10), checking and judging the following components in the tea leaf picking machine:
a) whether the high-temperature part of the gasoline engine is provided with an effective thermal protection device or not; whether the exposed rotating and transmission part is fixedly arranged or not is determined; a safety protection device without sharp corners and sharp edges;
b) whether the motor has an over-current protection device or not; whether the power lead has insulation protection measures or not; whether the storage battery has rainproof measures or not; whether all the electric terminals are protected and not exposed;
step (11), safety marking inspection;
a) whether safety signs are arranged at obvious positions near a blade of the tea leaf picking machine and a high-temperature department of the gasoline engine or not;
b) whether safety precautions are noted in the product use instruction of the tea leaf picking machine;
step (12) safety evaluation;
all the steps (9) to (11) are qualified, no safety accident occurs in the steps (4) to (5), and the safety accident occurs, so that the excellent performance evaluation is participated, otherwise, the test evaluation is terminated;
step (13) evaluating the excellence;
the goodness evaluation = no-load detection score α + job quality score β + productivity evaluation score γ + energy consumption rate evaluation score; the obtained goodness evaluation score is the evaluation score of the tea leaf picking machine participating in test evaluation; wherein the work quality β = bud leaf integrity rate evaluation score a + tea-making availability rate evaluation score b + loss rate evaluation score c + miss rate evaluation score d.
2. The experimental evaluation method for northern tea plucking machines according to claim 1, further characterized in that the steps (5) and (6) are repeated 3-5 times, and then the average value is taken as the experimental data of loss rate, missing harvest rate, bud and leaf integrity rate, and tea production rate.
3. The method for testing and evaluating a northern tea leaf picking machine according to claim 1, further characterized in that the step (4) of detecting the score of each item in the no-load state and calculating the score α in a comprehensive manner are carried out by: continuously operating the tea picking machine at a calibrated rotating speed for 30min, keeping the temperature rise of the bearing part less than or equal to 40 ℃, and recording 1 minute, otherwise, recording 0 minute; the temperature rise on the surface of the reduction gearbox is less than or equal to 35 ℃, 1 minute is counted, and otherwise 0 minute is counted; recording 1 point when the noise of the tea plucker is less than 90dB (A), otherwise recording 0 point; the vibration at the handle is less than 2.9 (g =9.81m/s 2), and the score is 1, otherwise the score is 0.
4. The experimental evaluation method for northern tea plucking machines according to claim 1, further characterized in that the evaluation scores of the bud-leaf integrity rate a, the tea-making availability rate b, the loss rate c and the missing harvest rate d in the steps (5) and (6) are obtained by: the bud leaf integrity rate is less than 60%, the score is 0, 60-78%, the score is 1, the score is more than 78%, and the score is 2; the tea making rate is less than 85%, and is counted for 0, 85-93%, and is counted for 1, more than 93%, and is counted for 2; the mining leakage rate is more than 1.2 percent, the score is 0, the score is 1.0-1.2 percent, the score is 1, the score is less than or equal to 1.0 percent, and the score is 2; the loss rate is more than 1.2%, mark 0 score, 1.0-1.2%, mark 1 score, less than or equal to 1.0%, mark 2 score.
5. A method of experimental evaluation of a north tea plucking machine as claimed in claim 1, further characterized in that the productivity evaluation score γ obtained in step (7) is obtained by: the productivity (kg/(m.h)) of the single portable tea plucking machine in unit width hour is less than 180, and is recorded for 0, 180 and 190, and is recorded for 1, and is recorded for 2, and the productivity is recorded for 2; the productivity (kg/(m.h)) of the double-person lifting type tea picking machine in width per hour is less than 270, and is recorded for 0, 270 and 280, recorded for 1, and is recorded for 2, and the productivity is greater than 280.
6. A method of experimental evaluation of a north tea plucking machine as claimed in claim 1, further characterized in that the energy consumption rate evaluation score obtained in step (8) is obtained by: the standard coal (tce) is greater than 20, marked as 0 point, 10-20 points, marked as 1 point, less than 10 points and marked as 2 points.
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| CN115204547A (en) * | 2022-01-17 | 2022-10-18 | 农业农村部南京农业机械化研究所 | Method for determining suitability of farmland in hilly and mountainous areas based on high-resolution remote sensing image |
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