Facility crop sparse sunlight stress diagnostic method

A technology of facility crops and diagnostic methods, applied in the fields of botanical equipment and methods, gardening methods, gardening tools/equipment, etc., can solve the problems of economic loss, yield and quality reduction of facility crops, etc.

Inactive Publication Date: 2013-12-04
NANJING UNIV OF INFORMATION SCI & TECH
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  • Abstract
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Problems solved by technology

In protected cultivation, lack of sunlight in winter is the main meteorological disaster common in solar greenhouses in northern my country and plastic greenho...

Method used

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  • Facility crop sparse sunlight stress diagnostic method
  • Facility crop sparse sunlight stress diagnostic method
  • Facility crop sparse sunlight stress diagnostic method

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Embodiment Construction

[0014] Below in conjunction with accompanying drawing, describe in detail a kind of facility crop oligo-illumination stress diagnosis method of the present invention, as figure 1 As shown, the steps are as follows:

[0015] Step 1, use the manual control test greenhouse of Nanjing University of Information Science and Technology to conduct the low-light control experiment, and design different levels of low-light treatment time;

[0016] Step 2: Systematically measure physiological and biochemical indicators such as photosynthetic characteristics and chlorophyll fluorescence parameters of crops under different design treatments. The specific measurement methods are as follows:

[0017] Step a, measurement of photosynthetic parameters: use LI-6400 portable photosynthesis measurement system (LI-COR Biosciences Inc., USA) to measure leaves between 9:00 and 11:00 in the morning after different temperature treatment and corresponding treatment time Photosynthetic characteristics, ...

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Abstract

The invention discloses a facility crop sparse sunlight stress diagnostic method. According to the method, the processing time of a manual climatic box is set, physiology and biochemistry indices of crops are measured, the relationship between sparse sunlight stress and parameters of the crops is analyzed, and the computational formula of a sparse sunlight stress index is given to represent the degree of sparse sunlight stress; on the basis of the influence of the sparse sunlight stress on the maximum photosynthetic rate and PSII maximum photochemical efficiency of the crops, disaster indices causing different grades of sparse sunlight stress are determined. By means of the sparse sunlight stress index established with the method, the degree of sparse sunlight stress suffered by the facility crops in a certain period can be determined.

Description

technical field [0001] The invention belongs to the technical field of meteorological disaster assessment, and relates to a method for diagnosing the oligo-illumination stress of facility crops. Background technique [0002] Since the 1990s, facility agriculture has developed rapidly, focusing on out-of-season and off-season vegetable cultivation. The area of ​​facility agriculture has grown from 108,000 mu in 1981 to more than 45 million mu in 2010, an increase of more than 440 times in 29 years. The development of facility agriculture also provides the most basic and solid guarantee for the supply of off-season vegetables in cities. With the rise of facility agriculture, research related to facility agriculture has become the focus of attention. The research on meteorological disaster risk of facility agriculture is one of the hotspots. In protected cultivation, lack of sunlight in winter is the main meteorological disaster common in solar greenhouses in northern my coun...

Claims

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Application Information

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IPC IPC(8): A01G7/00
Inventor 杨再强朱凯李永秀朱静
Owner NANJING UNIV OF INFORMATION SCI & TECH
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