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Facility crop low-temperature stress diagnostic method

A technology for low temperature stress and facility crops, which can be applied in the fields of botany equipment and methods, gardening methods, gardening tools/equipment, etc., and can solve problems such as rare

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

Previous studies have shown that continuous low temperature stress has a significant regulatory effect on crop photosynthetic rate, chlorophyll fluorescence parameters, superoxide dismutase (Superoxide dismutase, SOD) activity and other physiological processes. There are few reports on the systematic analysis of the mechanism of low temperature disasters at the same time by fluorescence parameters and enzyme activities

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  • Facility crop low-temperature stress diagnostic method
  • Facility crop low-temperature stress diagnostic method
  • Facility crop low-temperature stress diagnostic method

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Embodiment Construction

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

[0015] Step 1, use the artificial climate box (TPG1260, Australian) to conduct low temperature control experiments, design different temperature levels and different treatment times.

[0016] Step 2, measuring the physiological and biochemical indicators such as photosynthetic characteristics, chlorophyll fluorescence parameters, photosynthetic pigment content and enzyme activity of crops treated at different low temperatures. The photosynthetic characteristics of leaves were measured between 9:00 and 11:00 in the morning by using the LI-6400 portable photosynthesis measurement system (LI-COR Biosciences Inc., USA), and the CO in the leaf chamber was controlled during the measurement. 2 The concentration is 375μmol·mol -1 , the light quantum flux density is set to ...

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Abstract

The invention provides a facility crop low-temperature stress diagnostic method. According to the method, by setting the temperature and processing time of a manual climatic box, physiology and biochemistry indices of crops are measured, the relationship between low-temperature stress and parameters of the crops is analyzed, and the computational formula of a low-temperature stress index is given to represent the degree of low-temperature stress; on the basis of the influence of the low-temperature stress on the maximum photosynthetic rate, chlorophyll fluorescence parameters and enzyme activity of the crops, disaster indices causing different grades of low-temperature stress are determined. By means of the low-temperature stress index established with the method, the degree of low-temperature stress suffered by the facility crops in a certain period can be determined by observing daily average temperature and the lasting time of the temperature.

Description

technical field [0001] The invention belongs to the technical field of meteorological disaster assessment and relates to a method for diagnosing low temperature 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. Among them, the production of protected crops in southern my country in winter and northern spring often suffers from low-temperature chilling d...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G7/00
Inventor 杨再强朱凯李永秀张波
Owner NANJING UNIV OF INFORMATION SCI & TECH
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