Plant cultivation method

Abstract

The invention discloses a plant cultivation method which is characterized in that a double-function optical thin film is utilized to manufacture a greenhouse or a mulching film to form a plant growing space; plants are cultivated in the growing space; the double-function optical thin film comprises a thin film base body, a double-function light conversion agent and an addition agent; the weight of the double-function light conversion agent is 0.01-20% of the weight of the thin film; the weight of the addition agent is 0.1%-10% of the weight of the thin film; the balance is the thin film base body; and a composition general formula of the double-function light conversion agent is Cal-xNxF2:Eu,TM, wherein the x is greater than or equal to 0 and is less than or equal to 1, the N is one kind or more kinds of Ba, Zn, Sr, Mg, Hg, and Fe, and the TM is one kind or more kinds chosen from Sm, Cu, Pr, Tb, Ce, La, Dy, Mn and Ag. The double-function optical thin film can convert ultraviolet light and green light in sunlight into strong blue light and red orange light at the same time, and the strong blue light and the red orange light can promote growth of crops. The plant cultivation method is used for crop production and can remarkably play a role in production increase and quality improvement.

Description

technical field [0001] The invention relates to a plant planting method. Background technique [0002] So far, a large number of research experiments have proved that in the spectrum irradiated on the earth's surface, not all light of different wavelengths is beneficial to plant growth, and there are two peak areas that are really beneficial to plant photosynthesis: (1) blue light area (400 ~500nm), of which the strongest absorption peak of chlorophyll α is 425nm, and the strongest absorption peak of chlorophyll β, lutein and α-carotene is 440nm; (2) red orange region (600-680nm), of which 645nm is the strongest of chlorophyll β Absorption peak, 660nm is the strongest absorption peak of chlorophyll α. By increasing the blue light or red light exposure to plants, the root system of the crops can be developed, the stems and leaves are lush, the yield and income are increased, and the quality is superior. [0003] However, it can be used to manufacture light-changing masterba...

AI Technical Summary

Problems solved by technology

[0003] However, it can be used to manufacture light-changing masterbatches, and can produce the most important material light-changing agent for the growth of crops. Although some progress has been made, most of them focus on monochromatic light-changing agents, such as red light-changing agents. Lighting agents are mainly light-changing agents of rare earth complexes. There are still many problems in the research of this kind of light-changing agents so far: (1) Short fluorescence lifetime

There are very few literatures that report the fluorescence lifetime of organic complex light conversion agents. Even if it is reported, it only works for 3 months. It is used to produce light conversion masterbatches and prepare light conversion films. Soon its light conversion function will decline very quickly, causing it to be unable to synchronize with the life of the membrane

(2) Single optical function

Among the light conversion agents of rare earth organic complexes, only the UV-red conversion function can be used in the light conversion film at present, and there are few reports that can be converted into the blue light required for plant photosynthesis

In addition, in terms of light energy utilization, it can only absorb ultraviolet light, but not green light, which reduces the utilization efficiency of sunlight.

(3) Expensive

Agricultural film is an agricultural product vigorously promoted by the state. It is provided free of charge to growers or subsidized by the government. However, the current use of agricultural film is less than 30%

Although the amount of plastic shed film used in my country ranks first in the world, the technical content of shed film is relatively low, most of which are general-purpose ordinary films, and functional shed films account for less than 20%.

[0006] The existing organic health food cultivation is basically based on ordinary greenhouses covering plastic film and applying organic fertilizers. The initial investment is large, the process maintenance cost is high, and the increase in production is average. Therefore, the existing organic health food has low output and high price. Unable to achieve large-scale promotion

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