CN116681332B - Working method for implementing paddy field reclamation based on altitude data - Google Patents
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Abstract
The invention relates to the technical field of farmland reclamation, in particular to a working method for implementing paddy field reclamation based on elevation data, which aims at the problems that the reclamation efficiency is low, the farmland utilization rate is low, the input cost is high, automatic planning cannot be performed according to the geographical condition of farmland and the soil quality and the like caused by manual measurement and evaluation of natural data in the prior art, and the working method comprises the following steps: measuring and evaluating the land condition and the topography of a region, and evaluating the expected value of paddy field reclamation by comprehensive data; s2: according to the elevation of the area, threshold simulation is carried out on precipitation quantity of crop growth in historical meteorological data; and S3, calculating the paddy field planting suitability by the altitude in the region, and evaluating the paddy field reclamation feasibility by using a comprehensive evaluation model. Comprehensively evaluate the farmland quality and the reclamation feasibility, improve the reclamation efficiency of the farmland and greatly improve the utilization efficiency of the farmland.
Description
Technical Field
The invention relates to the technical field of farmland reclamation, in particular to a working method for implementing paddy field reclamation based on altitude data.
Background
Reclamation of paddy fields is an effective measure for protecting national soil resources, and is an important measure for large-scale cultivation of dry lands into paddy fields, so that the reduced pressure of the paddy fields after construction land use is relieved, and technical support is provided for promoting cultivation protection and land reclamation. The reclamation paddy field has relatively mature technical conditions and technical experience when operated at the average elevation, so that the basic area of the paddy field is practically ensured, the land reclamation needs to be developed, the reclamation of the paddy field needs to be realized outside the relative elevation area, and the benefit is maximized. Therefore, a working method for implementing paddy field reclamation based on altitude data is provided.
Disclosure of Invention
The invention aims to solve the problems that in the prior art, the reclamation period is long, the reclamation efficiency is low, the farmland utilization rate is low, the input cost is high, automatic planning cannot be performed according to the farmland geographic conditions and the soil quality, and the like caused by manual measurement and evaluation of natural data, and provides a working method for implementing paddy field reclamation based on altitude data.
In order to achieve the above object, the present invention adopts a working method for implementing paddy reclamation based on altitude data, which is characterized by comprising the steps of:
S1: measuring and evaluating the land condition and the topography of a region, and evaluating the expected value of paddy field reclamation by comprehensive data;
S2: according to the elevation of the area, threshold simulation is carried out on precipitation quantity of crop growth in historical meteorological data;
and S3, calculating the paddy field planting suitability by the altitude in the region, and evaluating the paddy field reclamation feasibility by using a comprehensive evaluation model.
Preferably, in the above technical solution, the S1 includes:
S1-1, measuring and evaluating the land condition and the topography of a region, determining the longitude and latitude and elevation data of a field region, carrying out regional elevation analysis on the land with a large area in paddy field reclamation, obtaining the highest rainfall and the lowest rainfall in the corresponding regional elevation in one year according to the statistical data, calculating the average value of the highest rainfall according to the regional elevation, carrying out data analysis according to a projection tool, carrying out sharpening operation on the data conforming to the regional elevation, calculating the yield U i of paddy field reclamation crops with the same elevation in other regions, determining the expected value of the yield of the crops with the regional elevation,
Where i is the number of land reclamation plots, j is the area cells where the paddy field is located, V i is the expected yield of reclamation of the paddy field containing the cells, Δh is the difference in yield of the paddy field corresponding to the elevation of the area, W is the threshold of yield of reclamation of the paddy field containing the cells, G i,j is the yield of reclamation of the paddy field at the elevation of each cell, and β is the correction coefficient.
Preferably, in the above technical solution, the S1 further includes:
S1-2, according to the corresponding expected value EV 0,
Wherein the expected variable of crop yield is multiplied by the probability of its yieldEach product is then added,/>Is the expected variable of crop yield U i.
Preferably, in the above technical solution, the S2 includes:
s2-1, acquiring an altitude of a region, determining the altitude of the altitude and a position of a bending terrain in a selected region, and performing precipitation simulation on historical rainfall data so as to obtain a precipitation threshold;
S2-2, comprehensively judging the precipitation time of the precipitation threshold F passing through the historical period and the precipitation parameters and the precipitation permeability parameters;
Wherein S 1 is a precipitation parameter value in unit time, R 1,R2 is a water guide parameter in precipitation penetration of compact and loose soil respectively, Q is soil porosity, eta is a water body retention threshold value of a paddy field, 1 is soil, 0 is sand and stone soil mixing, t is precipitation time, and m is precipitation amount in unit time.
Preferably, in the above technical solution, the S2 further includes:
S2-3, in the process of judging the precipitation threshold, calculating a water body retention threshold of the paddy field at the elevation;
Wherein E is the depth of the active soil at the elevation, D is the maximum water loss, deltaD is the difference of the water loss, g is the water flow rate, and B is the water passing area of the section of the paddy field.
Preferably, in the above technical solution, the S3 includes:
s3-1, calculating expected crop yield values and precipitation thresholds of the altitude of the region, and then evaluating suitability according to crop distribution and growth states, so as to judge the altitude selection and soil leveling planning of land reclamation;
S3-2, the growth progress and the growth quality of different altitudes can be changed according to the division of crops.
Preferably, in the above technical solution, the S3 further includes:
S3-3, providing judgment conditions for paddy field reclamation under the altitude by calculating the suitability, calculating the difference between the expected value and the actual value of the yield of the paddy field of the crops at the altitude in the area, and calculating the sum of squares of residual errors, wherein the method specifically comprises the following steps:
Wherein C is the sum of squares of residuals of the yield of the altitude of the area; EV is the actual paddy field yield of the altitude in the area; EV 0 is the expected paddy field yield of the altitude of the area; k is the total altitude suitable for planting paddy fields.
Preferably, in the above technical solution, the S3 further includes:
s3-4, calculating the adaptability A of the planted paddy field,
Wherein L is a constant, if C is larger, a larger constant L is taken; c is the sum of squares of the residual errors of the yields at different altitudes.
Preferably, in the above technical solution, the S3 further includes:
s3-5, the comprehensive evaluation model is
Wherein X is the reclamation evaluation value of the altitude of the area, w 1 is the yield weight of the altitude Cheng Shuitian of the area, w 2 is the precipitation weight of the altitude of the area, and the comprehensive evaluation parameters of paddy reclamation are set to provide data reference for paddy reclamation of the corresponding altitude area.
The beneficial effects of the invention are as follows:
Compared with the existing working method for implementing paddy field reclamation based on altitude data, the working method for implementing paddy field reclamation based on altitude data has the advantage that reclamation efficiency and farmland utilization rate are remarkably improved. And comprehensively judging the factors of the planting yield and the precipitation.
Drawings
FIG. 1 is a flow chart of a working method for implementing paddy reclamation based on elevation data according to the present invention;
FIG. 2 is a schematic illustration of an embodiment of the present invention;
FIG. 3 is a schematic view of the altitude erosion of the present invention.
Detailed Description
The following description of the technical solutions in the embodiments of the present invention will be clear and complete, and it is obvious that the described embodiments are only some embodiments of the present invention, but not all embodiments.
Referring to fig. 1 to 3, the present invention discloses a working method for implementing paddy reclamation based on altitude data, comprising the steps of:
S1: measuring and evaluating the land condition and the topography of a region, and evaluating the expected value of paddy field reclamation by comprehensive data;
S2: according to the elevation of the area, threshold simulation is carried out on precipitation quantity of crop growth in historical meteorological data;
and S3, calculating the paddy field planting suitability by the altitude in the region, and evaluating the paddy field reclamation feasibility by using a comprehensive evaluation model.
As shown in fig. 2 and 3, in the present embodiment,
S1-1, measuring and evaluating the land condition and the topography of a region, determining the longitude and latitude of a field region and elevation data, determining the dimension of a paddy field planted in a southwest region according to the longitude and latitude in historical data, and determining the action of the elevation data in the paddy field reclamation process according to a reclamation area calculation formula;
The paddy field reclamation needs to analyze the altitude of the area of the land with large area, obtain the highest rainfall and the lowest rainfall in the altitude of the corresponding area in one year according to the statistical data, calculate the average value of the highest rainfall according to the altitude of the area, data according to the projection tool, sharpen the data conforming to the altitude of the area, calculate the yield U i of the paddy field reclamation crops with the same altitude in other areas, determine the expected yield value of the crops with the altitude of the area,
Wherein i is the number of land reclamation blocks, j is the area cells of a paddy field, one reclamation block comprises a plurality of cells under the condition that the cell area is certain, V i is the expected yield of the reclamation of the paddy field containing the cells, deltaH is the yield difference value of the paddy field at the corresponding area elevation, W is the yield threshold of the reclamation of the paddy field containing the cells, G i,j is the yield of the reclamation of the paddy field at the elevation of each cell, and beta is a correction coefficient;
If the expected yield of a reclamation of a paddy field of a cell and the yield of the paddy field of the corresponding elevation of the area are different greatly, the correction coefficient helps to correct the expected yield of the reclamation of the paddy field so as to be closer to the actual yield.
In particular, the correction factor may be determined statistically, which reflects the degree of difference between the expected yield and the actual yield. When the adjustment coefficient is positive, indicating that the expected yield is higher than the actual yield, the expected yield needs to be reduced; when the adjustment coefficient is negative, it means that the expected yield is lower than the actual yield, and the expected yield needs to be increased.
And after the expected yield is corrected through the adjustment coefficient, a more accurate prediction result is obtained, so that the land altitude Cheng Shuitian reclamation work can be planned and managed better. At the same time, the decision maker is helped to better understand the relation between the expected yield and the actual yield, so that comprehensive judgment of paddy field reclamation is carried out by combining rainfall data and growth suitability data of the region.
S1-2, according to the corresponding expected value EV 0,
Wherein the expected variable of crop yield is multiplied by the probability of its yieldEach product is then added,/>For the expected variable of the crop yield U i, the expected growth of the crop under the elevation is analyzed by calculating the expected value EV, and the prediction of the result of paddy reclamation by the expected growth is used for helping to determine the input-output ratio.
Preferably, in the above technical solution, the S2 includes:
s2-1, acquiring an altitude of a region, determining the altitude of the altitude and a position of a bending terrain in a selected region, and performing precipitation simulation on historical rainfall data so as to obtain a precipitation threshold;
S2-2, comprehensively judging the precipitation time of the precipitation threshold F passing through the historical period and the precipitation parameters and the precipitation permeability parameters;
Wherein S 1 is a rainfall parameter value in unit time, R 1,R2 is a water guide parameter in the rainfall infiltration of compact and loose soil respectively, Q is soil porosity, eta is a water body retention threshold value of a paddy field, 1 is soil, 0 is sand and stone soil mixing, t is rainfall time, m is rainfall in unit time, the influence value of small rain on the paddy field is relatively small, and is temporarily ignored here,
S2-3, in the process of judging the precipitation threshold, calculating a water body retention threshold of the paddy field at the elevation;
wherein E is the depth of the active soil at the elevation, D is the maximum water loss, deltaD is the water loss difference, g is the water flow rate, and B is the water passing area of the section of the paddy field;
The threshold value is favorable for obtaining the optimal judgment value in the paddy field reclamation site selection process, thereby promoting the recovery and development of ecological balance, improving the crop yield and having important significance for agricultural production, environmental protection and human health.
Preferably, in the above technical solution, the S3 includes:
s3-1, calculating expected crop yield values and precipitation thresholds of the altitude of the region, and then evaluating suitability according to crop distribution and growth states, so as to judge the altitude selection and soil leveling planning of land reclamation;
S3-2, because the growth progress and the growth quality of different altitudes can be changed according to the division of crops, under the condition that the altitude data are different, the specific is as follows:
In areas with an altitude of about 200 meters, the interval between rice plants is usually 30-45 meters, and the planting area per hectare is about 8000-12000 plants; 3 irrigations are needed each year, each time 15-20 days apart.
In areas around 500 meters above altitude, the interval between rice plants is usually 60-75 meters, and the planting area per hectare is about 6000-8000 plants; irrigation is carried out 2 times per year, each time at 25-35 days intervals.
In mountain areas with an altitude above 1000 meters, the rice planting interval is generally 60-90 meters, and the planting area per hectare is about 4000-6000 plants; irrigation is carried out 2-3 times per year, each time at intervals of 45-60 days.
S3-3, providing judgment conditions for paddy field reclamation under the altitude by calculating the suitability, calculating the difference between the expected value and the actual value of the yield of the paddy field of the crops at the altitude in the area, and calculating the sum of squares of residual errors, wherein the method specifically comprises the following steps:
Wherein C is the sum of squares of residuals of the yield of the altitude of the area; EV is the actual paddy field yield of the altitude in the area; EV 0 is the expected paddy field yield of the altitude of the area; k is the total altitude suitable for planting paddy fields.
S3-4, calculating the adaptability A of the planted paddy field,
Wherein L is a constant, if C is larger, a larger constant L is taken; c is the sum of squares of the residual errors of the yields at different altitudes;
s3-5, the comprehensive evaluation model is
Wherein X is the reclamation evaluation value of the altitude of the area, w 1 is the yield weight of the altitude Cheng Shuitian of the area, w 2 is the precipitation weight of the altitude of the area, and the comprehensive evaluation parameters of paddy reclamation are set to provide data reference for paddy reclamation of the corresponding altitude area.
The method comprises the following steps of:
In a region with an altitude of about 200 meters, when paddy field reclamation is carried out, the original grasslands or dry lands are usually required to be converted into paddy fields, and the area of each hectare of paddy field is about 6-8 mu.
In a region with an altitude of about 500 meters, when paddy field reclamation is performed, the original hilly land or barren land is usually required to be converted into paddy fields, and the area of the paddy fields per hectare is about 4-6 mu.
In a mountain area with an altitude of 1000 meters or more, when paddy field reclamation is performed, the original glacier grassland or mountain meadow is usually required to be converted into paddy fields, and the area of the paddy fields per hectare is about 2-4 mu.
For reference, the actual data may vary depending on geographical location, climate conditions, etc., but also provides some data support for paddy reclamation.
In addition, for the soil conditions and terrains of different elevation areas, comprehensive data are important factors for evaluating paddy field reclamation, soil of different elevations in different areas is collected, main components and soil types in the soil are analyzed, meteorological condition data are analyzed, data judgment is needed for distribution of surface water and underground water, and the data judgment is also an important factor for evaluating feasibility of paddy field reclamation.
Compared with the existing working method for implementing paddy field reclamation based on altitude data, the working method for implementing paddy field reclamation based on altitude data has the advantage that reclamation efficiency and farmland utilization rate are remarkably improved. And comprehensively judging the factors of the planting yield and the precipitation.
Finally, it should be noted that: the above embodiments are only for illustrating the technical solution of the present invention, and are not limiting; although the invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may be modified or some technical features may be replaced with others, which may not depart from the spirit and scope of the technical solutions of the embodiments of the present invention.
Claims (4)
1. A working method for implementing paddy reclamation based on altitude data, comprising the following steps:
S1: measuring and evaluating the land condition and the topography of a region, and evaluating the expected value of paddy field reclamation by comprehensive data;
S1-1, measuring and evaluating the land condition and the topography of a region, determining the longitude and latitude and elevation data of a field region, carrying out regional elevation analysis on the land with a large area in paddy field reclamation, obtaining the highest rainfall and the lowest rainfall in the corresponding regional elevation in one year according to the statistical data, calculating the average value of the highest rainfall according to the regional elevation, carrying out data analysis according to a projection tool, carrying out sharpening operation on the data conforming to the regional elevation, calculating the yield U i of paddy field reclamation crops with the same elevation in other regions, determining the expected value of the yield of the crops with the regional elevation,
Wherein i is the number of land reclamation blocks, j is the cell of the area where the paddy field is located, V i is the expected yield of the reclamation of the paddy field containing the cell, delta H is the difference value of the yield of the paddy field corresponding to the altitude of the area, W is the threshold value of the yield of the reclamation of the paddy field containing the cell, G i,j is the yield of the reclamation of the paddy field at the altitude of each cell, and beta is a correction coefficient;
S1-2, according to the corresponding expected value EV 0,
Wherein the expected variable of crop yield is multiplied by the probability of its yieldEach of the products is then added up,Is the expected variable of crop yield U i;
S2: according to the elevation of the area, threshold simulation is carried out on precipitation quantity of crop growth in historical meteorological data;
s2-1, acquiring an altitude of a region, determining the altitude of the altitude and a position of a bending terrain in a selected region, and performing precipitation simulation on historical rainfall data so as to obtain a precipitation threshold;
S2-2, comprehensively judging the precipitation time of the precipitation threshold F passing through the historical period and the precipitation parameters and the precipitation permeability parameters;
Wherein S 1 is a precipitation parameter value in unit time, R 1,R2 is a water guide parameter in precipitation penetration of compact and loose soil respectively, Q is soil porosity, eta is a water body retention threshold value of a paddy field, 1 is soil, 0 is sand and stone soil mixing, t is precipitation time, and m is precipitation amount in unit time;
S2-3, in the process of judging the precipitation threshold, calculating a water body retention threshold of the paddy field at the elevation;
wherein E is the depth of the active soil at the elevation, D is the maximum water loss, deltaD is the water loss difference, g is the water flow rate, and B is the water passing area of the section of the paddy field;
S3, calculating the paddy field planting suitability through the altitude in the area, and evaluating the paddy field reclamation feasibility through a comprehensive evaluation model;
s3-1, calculating expected crop yield values and precipitation thresholds of the altitude of the region, and then evaluating suitability according to crop distribution and growth states, so as to judge the altitude selection and soil leveling planning of land reclamation;
S3-2, the growth progress and the growth quality of different altitudes can be changed according to the division of crops.
2. The working method for performing paddy reclamation based on elevation data of claim 1, wherein S3 further comprises:
S3-3, providing judgment conditions for paddy field reclamation under the altitude by calculating the suitability, calculating the difference between the expected value and the actual value of the yield of the paddy field of the crops at the altitude in the area, and calculating the sum of squares of residual errors, wherein the method specifically comprises the following steps:
Wherein C is the sum of squares of residuals of the yield of the altitude of the area; EV is the actual paddy field yield of the altitude in the area; EV 0 is the expected paddy field yield of the altitude of the area; k is the total altitude suitable for planting paddy fields.
3. The working method for performing paddy reclamation based on elevation data according to claim 2, wherein the step S3 further comprises:
s3-4, calculating the adaptability A of the planted paddy field,
Wherein L is a constant, if C is larger, a larger constant L is taken; c is the sum of squares of the residual errors of the yields at different altitudes.
4. A working method for performing paddy reclamation based on elevation data as recited in claim 3, wherein the S3 further comprises:
s3-5, the comprehensive evaluation model is
Wherein X is the reclamation evaluation value of the altitude of the area, w 1 is the yield weight of the altitude Cheng Shuitian of the area, w 2 is the precipitation weight of the altitude of the area, and the comprehensive evaluation parameters of paddy reclamation are set to provide data reference for paddy reclamation of the corresponding altitude area.
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