Method for laying orchard sensors

Abstract

The invention discloses a method for laying orchard sensors. The method comprises the steps: dividing an orchard into grids at intervals of 500m; subdividing the grids gradually, and merging the gridswith the same landform into a land parcel; obtaining the basic parameters of all land parcels according to the data of each landform sampling point; selecting the land parcel with the smallest coefficient of variation; obtaining the optimal sampling number n1 of the land parcels according to a Cochran optimal sampling formula; calculating the sampling number and slope ratio required by a land parcel ai according to the slopes of other land parcels; taking the weighted mean of the sampling numbers of all nutrients as a final sampling number, i.e., the number of sensors which are actually laidin the land. The method enables the orchard to be divided into n land parcels according to different landforms, so as to distribute different numbers of sensors. Specifically, the number of sensors ofother land parcels is deduced through the first land parcel. The method reduces the blindness of the precise fertilization of the orchard, improves the laying accuracy and scientificity of the sampling points of the orchard, achieves the optimization of the number under the certain precision, saves the cost, and facilitates the implementation.

Description

technical field

[0001] The invention relates to the technical field of orchard soil monitoring, in particular to a method for laying orchard sensors. Background technique

[0002] The rapid development of world agriculture in the second half of the 20th century was basically obtained under the conditions of a large amount of chemical fertilizers and pesticides and mineral energy, in addition to relying on the progress of biotechnology and the expansion of arable land and irrigated areas. However, the resulting ecological and environmental problems such as soil erosion, soil productivity decline, agricultural products and groundwater pollution, and water eutrophication have attracted widespread attention from the international community and promoted the emergence and development of sustainable agricultural development and precision agriculture. . The outstanding problems of my country's chemical fertilizer investment are unreasonable structure and low utilization rate. Low f...

Examples

Embodiment 1

[0024] There are two types of terrain in the orchard: flat land and gentle slope. The grids are divided at a distance of 500m, and then the grids are gradually refined until at least 80% of one grid is the same terrain. The grids of the same terrain are combined into one terrain. The blocks are labeled a1 and a2 respectively, among which there are 12 blocks in flat land a1 and 18 blocks in gentle slope a2;

[0025] Arrange the initial sampling points in the center of the grid, collect the content of N, P, and K, and obtain the basic data as shown in the following table:

[0026] flat ground:

[0027] nutrient

Mean value / mg·kg -1

standard deviation

coefficient of variation

initial sample number

N

92.11

16.5798

0.18

18

P

18.14

13.2422

0.73

18

K

83

31.54

0.38

18

[0028] Nutrient grading standards are shown in the table below:

[0029] nutrient

Extremely scarce

lack

Approp...

Embodiment 2

[0041] There are three types of terrain in the orchard: flat land, gentle slope, and steep slope. Firstly, the initial grid spacing is 500m, and then the grid is gradually refined and merged. There are 14 flat land a1, 10 gentle slope a2, and 6 steep slope a3. ;

[0042] Arrange initial sampling points in the center of the grid, collect the contents of N, P, and K, and obtain the basic data as follows:

[0043] flat ground

[0044] nutrient

Mean value / mg·kg -1

standard deviation

coefficient of variation

initial sample number

N

84.6

37.9

44%

14

P

28.6

16.3

57%

14

K

90.4

64.1

70%

14

[0045] Gentle slope: the slope is about 5°

[0046] nutrient

Mean value / mg·kg -1

standard deviation

coefficient of variation

initial sample number

N

78.7

26.4

33%

10

P

23.1

16.4

70%

10

K

84.2

44.4

52%

10

[0047] Steep slope: ...

technical field

[0001] The invention relates to the technical field of orchard soil monitoring, in particular to a method for laying orchard sensors. Background technique

[0002] The rapid development of world agriculture in the second half of the 20th century was basically obtained under the conditions of a large amount of chemical fertilizers and pesticides and mineral energy, in addition to relying on the progress of biotechnology and the expansion of arable land and irrigated areas. However, the resulting ecological and environmental problems such as soil erosion, soil productivity decline, agricultural products and groundwater pollution, and water eutrophication have attracted widespread attention from the international community and promoted the emergence and development of sustainable agricultural development and precision agriculture. . The outstanding problems of my country's chemical fertilizer investment are unreasonable structure and low utilization rate. Low f...

Examples

Embodiment 1

[0024] There are two types of terrain in the orchard: flat land and gentle slope. The grids are divided at a distance of 500m, and then the grids are gradually refined until at least 80% of one grid is the same terrain. The grids of the same terrain are combined into one terrain. The blocks are labeled a1 and a2 respectively, among which there are 12 blocks in flat land a1 and 18 blocks in gentle slope a2;

[0025] Arrange the initial sampling points in the center of the grid, collect the content of N, P, and K, and obtain the basic data as shown in the following table:

[0026] flat ground:

[0027] nutrient

Mean value / mg·kg -1

standard deviation

coefficient of variation

initial sample number

N

92.11

16.5798

0.18

18

P

18.14

13.2422

0.73

18

K

83

31.54

0.38

18

[0028] Nutrient grading standards are shown in the table below:

[0029] nutrient

Extremely scarce

lack

Approp...

Embodiment 2

[0041] There are three types of terrain in the orchard: flat land, gentle slope, and steep slope. Firstly, the initial grid spacing is 500m, and then the grid is gradually refined and merged. There are 14 flat land a1, 10 gentle slope a2, and 6 steep slope a3. ;

[0042] Arrange initial sampling points in the center of the grid, collect the contents of N, P, and K, and obtain the basic data as follows:

[0043] flat ground

[0044] nutrient

Mean value / mg·kg -1

standard deviation

coefficient of variation

initial sample number

N

84.6

37.9

44%

14

P

28.6

16.3

57%

14

K

90.4

64.1

70%

14

[0045] Gentle slope: the slope is about 5°

[0046] nutrient

Mean value / mg·kg -1

standard deviation

coefficient of variation

initial sample number

N

78.7

26.4

33%

10

P

23.1

16.4

70%

10

K

84.2

44.4

52%

10

[0047] Steep slope: ...

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