Nutrient solution management technology based on greenhouse tomato leaf length

A technology of leaf length and nutrient solution, applied in the field of nutrient solution management, can solve time-consuming and labor-intensive problems

Inactive Publication Date: 2017-04-26
JIANGSU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chemical analysis needs to be carried out in the laboratory, which is time-consuming and labor-intensive

Method used

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  • Nutrient solution management technology based on greenhouse tomato leaf length
  • Nutrient solution management technology based on greenhouse tomato leaf length
  • Nutrient solution management technology based on greenhouse tomato leaf length

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Embodiment 1

[0050] Taking greenhouse tomatoes as an example, a nutrient solution management method based on leaf length of the present invention is introduced in detail, which includes the following three steps:

[0051] Step 1, missing or not:

[0052] 1-1. The leaf positions of the characteristic leaves of the greenhouse tomato are as follows: before the fruiting of the greenhouse tomato, the inverted 3 leaves are the characteristic leaves; since the greenhouse tomato begins to bear fruit when the 8th or 9th leaf appears, after the greenhouse tomato bears fruit, the inverted 7 The leaf is the characteristic leaf; the standard leaf length is the characteristic leaf length calculated by the standard leaf length model, that is, the leaf length of the characteristic leaf under the condition of no water and fertilizer deficit;

[0053]1-2. Measure the leaf length of the characteristic leaf of the tomato in the greenhouse, and then input the temperature data in the greenhouse before the measu...

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PUM

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Abstract

The invention provides a nutrient solution management technology based on the greenhouse tomato leaf length. The nutrient solution management technology comprises the following steps that 1, the leaf length of greenhouse tomato feature leaves is subtracted by the standard leaf length of the feature leaves, it is indicated that water and fertilizer are oversupplied if the result is larger than zero, it is indicated that the water and fertilizer are undersupplied if the result is smaller than zero, and it is indicated that the water and fertilizer are supplied properly if the result is equal to zero; 2, the specific conductance value of a current irrigation nutrient solution is subtracted by the EC value of the nutrient solution under the deficiency condition without water and fertilizer, the difference value is multiplied by the number of days of irrigation of the nutrient solution, the result is the over-application or under-application nutrient solution nutrient quantity, and the specific conductance value of the current irrigation nutrient solution is deduced through the average growth rate a of the feature leaves; and 3, the final specific conductance value of the nutrient solution is determined according to the over-application or under-application nutrient solution nutrient quantity for adjustment, and the adjusted nutrient solution is used for irrigating crops. According to the nutrient solution management technology based on the greenhouse tomato leaf length, only the length of the feature leaves of greenhouse tomatoes needs to be measured, the one-time input is low, and measurement is quite simple and practicable.

Description

technical field [0001] The invention relates to a nutrient solution management technology based on the length of greenhouse tomato leaves, evaluates the nutritional status of crops through the length of the leaves, and manages the nutrient solution according to the evaluation results, belonging to the technical field of facility cultivation. Background technique [0002] China's protected gardening area has reached 3.3 million hectares, accounting for about 85% of the world's total protected gardening area. Nutrient solution irrigation is widely used in large-scale greenhouses, and nutrient solution irrigation is also increasingly used in solar greenhouses and plastic greenhouses. However, there are not many studies on the law of water and fertilizer absorption and utilization of greenhouse crops in China, and the mechanism of water and fertilizer absorption by greenhouse crops is still unclear. Therefore, the nutrient solution management mode currently adopted is the nutrien...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00
CPCA01C21/007
Inventor 倪纪恒刘勇周靖宇毛罕平
Owner JIANGSU UNIV
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