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A method for making crop irrigation strategies based on a leaf area increasing model

A technology of growth model and leaf area, applied in botany equipment and methods, horticultural methods, watering devices, etc., can solve the problems of unsimplified measurement of crop irrigation strategies, complicated measurement process, and inability to accurately predict, so as to achieve reliable data, The effect of simple measurement process and easy operation

Active Publication Date: 2017-09-15
JIANGSU UNIV
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Problems solved by technology

[0005] The invention provides a method for formulating crop irrigation strategy based on the leaf area growth model to overcome the shortcomings of the prior art that the measurement process is relatively complicated, the cost is high, and cannot be accurately predicted, and solves the problem that the prior art cannot simplify the measurement of crop irrigation. strategic conundrum

Method used

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  • A method for making crop irrigation strategies based on a leaf area increasing model
  • A method for making crop irrigation strategies based on a leaf area increasing model
  • A method for making crop irrigation strategies based on a leaf area increasing model

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Embodiment

[0043] Brassica napus was used as the research material, and 12-hole plug trays were used in the laboratory to germinate the seeds of Brassica napus, and the Hoagland culture medium was prepared to cultivate the seedlings until the 45th day, and the seedlings with the same growth were randomly selected as the seedlings of the investigated plants; different concentrations of Polyethylene glycol (Polyethylene Glycol, PEG6000) was added to Hoagland's culture medium to prepare different drought stress levels (0, 10, 20, 40g L- 1 ) culture medium.

[0044]First, randomly select and measure the length L and width W of some Brassica napus leaves cultivated under various drought stress levels, and simultaneously use a leaf area meter to measure the leaf area A of the corresponding leaves. According to the measured leaf area and the corresponding leaf length L and width The product of W calculates the correction coefficient, the average value is 0.96, and the calculation model of leaf ...

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Abstract

The invention provides a method for making crop irrigation strategies based on a leaf area increasing model and belongs to the application field of agricultural crop water-saving technology. The method employs a plant leaf area calculating equation to build a calculating model of leaf length, leaf width and leaf area, builds a relation model representing the change of leaf area along with time by using a four-parameter logistic equation, calculates relative time required for rise of leaf area increasing speed to the maximum under different water supply schemes according to the relation model representing the change of leaf area along with time, and makes a crop irrigation strategy according to the water supply scheme corresponding to the minimum value of the relative time required for rise of leaf area increasing speed to the maximum. The method has the advantages of simple steps, easy operation and nondestructive detection and can provide theoretical bases and data support for research on crop irrigation strategies.

Description

technical field [0001] The invention belongs to the application field of agricultural crop water-saving technology, and relates to a method for formulating a crop irrigation strategy based on a leaf area growth model. Background technique [0002] China is a large agricultural country, and it is also a country with serious drought and water shortage. Water resources are the foundation of agricultural development. The sustainable development of agriculture is also facing a crisis of water shortage. How to effectively protect and rationally utilize limited agricultural irrigation water resources from the perspective of strategic height and sustainable development has become an important research topic in our country. Water-saving irrigation is to change the traditional habit of people watering the land for thousands of years, turn the watering land into watering crops, carry out reasonable irrigation according to the optimal water demand of crops, and use a small amount of wat...

Claims

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Application Information

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IPC IPC(8): A01G7/00A01G25/00A01G31/00
CPCA01G7/00A01G25/00A01G31/00
Inventor 邢德科徐小健吴沿友刘宇婧吴沿胜于睿黎明鸿
Owner JIANGSU UNIV
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