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Method for promoting photosynthetic efficiency of facility horticultural crops by using zeolite molecular sieve

A technology of zeolite molecular sieve and photosynthetic efficiency, applied in horticultural methods, botanical equipment and methods, horticulture, etc., can solve the problems of high energy consumption, and achieve the effects of low energy consumption, wide applicability, simple and safe operation

Active Publication Date: 2021-09-24
ZHEJIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

But in this invention, the collected CO 2 Desorption requires heating, which consumes a lot of energy. The adsorption bed layer is composed of 5A molecular sieve, 13X molecular sieve or carbon molecular sieve loaded with potassium hydroxide

Method used

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  • Method for promoting photosynthetic efficiency of facility horticultural crops by using zeolite molecular sieve
  • Method for promoting photosynthetic efficiency of facility horticultural crops by using zeolite molecular sieve
  • Method for promoting photosynthetic efficiency of facility horticultural crops by using zeolite molecular sieve

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Embodiment 1: Silicalite-1 molecular sieve improves CO in a closed environment 2 concentration

[0030] Pretreatment of Silicalite-1 molecular sieve: add 5cm 3 Silicalite-1 molecular sieve, and then fill the sealed box with CO 2 , respectively sealed and left for 0.1h, 0.5h, 1h, 2h, 4h, 8h, 12h. Control material CaCO 3 The preprocessing step was performed with the same parameters.

[0031] The pretreated Silicalite-1 molecular sieve and control materials were quickly transferred to CO 2 Slowly release CO in a 56L empty airtight box with an initial concentration of 480ppm 2 , after 0.5h, detect and record the CO in the 56L empty airtight box 2 changes in concentration. The result is as figure 1 As shown, the pretreated Silicalite-1 molecular sieve and the control material can make the CO in the empty airtight box 2 Concentration increased, but Silicalite-1 molecular sieve made the CO in the empty airtight box 2 The concentration increased by 340-500ppm, and the...

Embodiment 2

[0032] Embodiment 2: Application of pretreated Silicalite-1 molecular sieves to CO in the facility cultivation environment 2 Effects of concentration, leaf photosynthesis and growth of protected horticultural crops

[0033] Pretreatment of Silicalite-1 molecular sieve: add 25cm 3 Silicalite-1 molecular sieve, and then fill the sealed box with CO 2 , sealed and let stand for 1h. Control material CaCO 3 The preprocessing step was performed with the same parameters.

[0034] The pretreated Silicalite-1 molecular sieve and control material were rapidly transferred to CO 2 The concentration drops to 400ppm in the facility cultivation environment of plants, and slow release of CO 2 , detect and record the CO in the cultivation environment of plant facilities 2 Changes in the concentration, after 5h, the Silicalite-1 molecular sieve and the control material were taken out.

[0035] The cultivation environment of the above-mentioned plant facilities is a 580L airtight incubator...

Embodiment 3

[0040] Embodiment 3: Application of pretreated Silicalite-1 molecular sieves to CO in the facility cultivation environment 2 Effect of Concentration

[0041] Pretreatment of Silicalite-1 molecular sieve: add 50cm 3 Silicalite-1 molecular sieve, and then fill the sealed box with CO 2 , sealed and let stand for 1h. Control material CaCO 3 The preprocessing step was performed with the same parameters.

[0042] The pretreated Silicalite-1 molecular sieve and control material were rapidly transferred to CO 2 The concentration drops to 400ppm in the facility cultivation environment of plants, and slow release of CO 2 , detect and record the CO in the cultivation environment of plant facilities 2 changes in concentration.

[0043] The cultivation environment of the above-mentioned plant facilities is a 580L airtight incubator, in which there are 8 'CondineRed' tomato seedlings with the same growth and seedling age, the photoperiod is 8:00-20:00, and the light intensity is 200-...

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Abstract

The invention discloses a method for promoting photosynthetic efficiency of facility horticultural crops by using a zeolite molecular sieve the zeolite molecular sieve is a Silicalite-1 molecular sieve. The method for promoting the photosynthetic efficiency of the facility horticultural crops by using the zeolite molecular sieve comprises the following steps of (1) pretreating the Silicalite-1 molecular sieve so that the Silicalite-1 molecular sieve fully adsorbs CO2; and (2) transferring the pretreated Silicalite-1 molecular sieve to a facility cultivation environment in which the CO2 concentration is less than or equal to 480ppm, and standing the Silicalite-1 molecular sieve to slowly release the CO2. The Silicalite-1 molecular sieve is an MFI type all-silicon molecular sieve, is internally provided with a pore channel and a cavity, and can be used for adsorbing and desorbing the CO2, the technical scheme can realize adsorption and desorption of the CO2 by the Silicalite-1 molecular sieve at normal temperature and normal pressure, improves photosynthesis of the facility horticultural crops under the condition of low energy consumption, further promotes growth of the facility horticultural crops, and has the characteristics that operation is simple, convenient and safe, and environment is friendly.

Description

technical field [0001] The invention belongs to the field of facility agriculture, and in particular relates to a method of using zeolite molecular sieves to improve CO2 in plant cultivation facilities. 2 Concentration, methods to promote photosynthetic efficiency of protected horticultural crops. Background technique [0002] Facility agriculture is an important direction for the optimization, transformation and upgrading of my country's agricultural industrial structure. Improving the ability of environmental regulation is the key to improving the efficiency and production of facility agriculture. Due to the environmental conditions of protected cultivation and the photosynthesis of crops, the CO in the room / shed 2 Concentration continues to decrease, making facility crops in CO 2 The state of starvation will seriously affect the growth and stress resistance of its stems, leaves, fruits and other organs. Therefore, applying CO 2 Gas fertilizer is one of the important m...

Claims

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Application Information

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IPC IPC(8): A01G7/02
CPCA01G7/02Y02P60/20
Inventor 师恺王安然王亮王海王娇吕建荣喻景权
Owner ZHEJIANG UNIV
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