Method of conducting variable rate fertilization according to growth status of leaf vegetables

A technology for leafy vegetables and crops is applied in the field of variable fertilization according to the growth of leafy vegetables. Water and fertilizer supply, the effect of reducing planting costs

Active Publication Date: 2015-08-05
JIANGSU UNIV
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  • Abstract
  • Description
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Problems solved by technology

However, due to the short growth cycle of lettuce and the fuzzy appearance of each growth stage, it is difficult to clearly judge the growth stages of lettuce.

Method used

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  • Method of conducting variable rate fertilization according to growth status of leaf vegetables
  • Method of conducting variable rate fertilization according to growth status of leaf vegetables
  • Method of conducting variable rate fertilization according to growth status of leaf vegetables

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Embodiment Construction

[0022] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection scope of the present invention is not limited thereto.

[0023] Leafy vegetable crops such as lettuce, Chinese cabbage, cabbage, rape, and spinach have similar properties, and the amount of fertilization can adopt the method described in the present invention. A method of variable fertilization for growth vigor.

[0024] Method of variable fertilization according to lettuce growth:

[0025] (1) Acquisition of growth information

[0026] The test was completed in a Venlo-type greenhouse of Jiangsu University (32.11N, 119.27E), and the test material was Italy's year-round bolting-resistant semi-headed lettuce (Nanjing Woshu Seed Industry Co., Ltd.). Put the seeds into the hole trays for cultivation, and when the seedlings grow to "five leaves and one heart", plant the lettuce hole tray seedlings with similar growth conditions i...

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Abstract

The present invention provides a method of conducting variable rate fertilization according to growth status of leaf vegetables. The method comprises: extracting three growth information; projection area of the canopy, circumference of the canopy and plant height by acquiring a top view and a front view of a crop's canopy; respectively building time-sequence predictive models; obtaining an optimal model by calculating indexed of the predictive model; calculating the rapid growth periods of the three growth information; and dividing the whole growth period into three stages, and then determining the fertilization strategies. According to the method provided by the present invention, variable rate fertilization is conducted according to growth status, which effectively saves fertilizers, achieves precise management of crop nutrition, and reduces cost of planting.

Description

technical field [0001] The invention belongs to the field of crop fertilization, in particular to a method for variable fertilization according to the growth of leaf vegetable crops. Background technique [0002] Plants are composed of cells, and plant growth is an increase in cell number and cell volume, so plant growth is an irreversible process of increasing volume and weight. Studies have found that crops experience a "slow-fast-slow" "S-type" growth process during the growth process, that is, the initial growth is slow, and then gradually accelerates into a fast growth period, and then slows down until finally stopping after reaching the highest speed. grow. The growth process of both the macroscopic characteristics of plants, such as weight, surface area, height, and the microscopic characteristics of plants, such as cell number and protein content, all follow this law. The law of crop water and fertilizer absorption is basically the same as the law of crop growth. T...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/04G06Q50/02
CPCG06Q10/04G06Q50/02
Inventor 毛罕平高洪燕张晓东李青林孙俊
Owner JIANGSU UNIV
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