Seed cotton relative yield estimation method based on aeration porosity

A technology of aeration porosity and relative yield, which is applied in the cross field of soil science, crop cultivation and tillage, and can solve the problem that the influence of soil physical properties on crop growth and yield cannot be quantitatively characterized.

Inactive Publication Date: 2021-07-09
TARIM UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to solve the technical problem that existing methods cannot quantitatively characterize the influence of soil physical properties on crop growth and yield, and provide a method for estimating the relative yield of seed cotton based on aeration porosity

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  • Seed cotton relative yield estimation method based on aeration porosity

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specific Embodiment approach 1

[0013] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The following steps are performed in accordance with the following steps based on the following steps:

[0014] When the soil irrigation management water limit is valid to be θ afp = Θ s When -0.1, the relationship equation of seed cotton relative yield and soil ventilation porosity is:

[0015] Y = 4000 × θ ap -120 (1)

[0016] Where Y is seed cotton relative yield (%), θ ap Soil ventilation porosity (cm 3 cm –3 ), Its calculation formula is:

[0017] θ ap = Θ s -θ fc (2)

[0018] In the formula, θ s Total porosity of soil (cm 3 cm –3 ), Θ fc Water in the field (CM) 3 cm –3 ).

[0019] The derivation process of equation (1) is as follows:

[0020] The soil moisture characteristic curve equation is indicated in a logarithmic form.

[0021] θ = θ s -Slog 10 h (3)

[0022] Soil water content corresponding to 10kPa water suction is used as a field of water (θ fc The value of the equation (3) is changed at this time.

[0023] θ ...

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Abstract

The invention discloses a seed cotton relative yield estimation method based on aeration porosity, relates to a crop relative yield estimation method based on aeration porosity, and belongs to the crossing field of soil science-crop cultivation science and tillage science. The method solves the technical problem that the existing method cannot quantitatively characterize the influence of the physical properties of soil on the growth and yield of crops. When the soil irrigation management moisture upper limit effective ventilation point is [theta]afp = [theta]s-0.1, the relation equation of the relative yield of seed cotton and the soilaeration porosity ([theta]ap, the difference between the total porosity of the soil and the field moisture capacity) is Y = 4000 * [theta]ap-120, wherein Y is the relative yield (%) of the seed cotton, and [theta]ap is the aeration porosity (cm<3>cm<-3>) of the soil. The invention provides a cotton relative yield calculation formula based on the soil aeration porosity when an effective aeration point ([theta]afp = [theta]s-0.1) is taken as an irrigation upper limit, and the problem that the quantitative evaluation of the crop yield is influenced by the physical properties of soil is solved.

Description

Technical field [0001] The present invention relates to a criminal relative yield estimation method based on venting porosity, belonging to soil learning - crop cultivation and tillage crossains. Background technique [0002] Soil physical properties are one of the important factors affecting crop growth and yield. However, how to quantify the influence of soil physical properties on crop growth and yield has always been a key issue that is still unresolved. Inventive content [0003] It is an object of the present invention to solve the technical problem of existing methods that cannot be quantified to characterize soil physical properties on crop growth and yield, and provide a relative yield estimation method based on pendant cotton with ventilation porosity. [0004] Soil ventilation is one of the key factors affecting crop growth and production. In order to ensure sufficient ventilation, soil ventilation porosity (the difference between the total porosity of soil and the di...

Claims

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Application Information

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IPC IPC(8): G06F17/10
CPCG06F17/10
Inventor 迟春明赵长巍卜东升
Owner TARIM UNIV
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