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Protective box for protecting growth of plant seedlings

A protection box and plant technology, applied in the field of protection boxes for plant seedling growth, can solve the problems of difficulty in becoming a reality, lack, and high cost of cultivated land, and achieve the effect of maintaining sustainable development, ensuring sustainable utilization, and ensuring thriving growth.

Active Publication Date: 2015-04-29
NINGBO LIANHUA ENVIRONMENTAL SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Reclaimed tidal flats can be used as agricultural land to support economic development. my country advocates and encourages coastal areas to use tidal flats to reclaim fields and expand the area of ​​cultivated land. However, due to the serious shortage of coastal fresh water, the cost of transforming tidal flats into cultivated land is high and the benefit is low. More and more Tidal flat reclamation has lost the "original intention" of land reclamation and has become a "paradise" for mariculture, which makes it difficult for the country to achieve a balance of land occupation and compensation through reclamation and land reclamation.
The tidal flats after reclamation are all saline-alkali land, and when they are transformed into arable land, a large amount of fresh water needs to be flushed for many years before they can be used for planting, which seriously restricts the land use efficiency in these areas

Method used

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  • Protective box for protecting growth of plant seedlings

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0077] Polylactic acid is selected as the raw material, and under the action of the injection molding machine, it is injected into a five-sided solid box with a thickness of 20±4mm and a tensile strength of 65±5MPa, and one side is reserved for the position of the optional separation window.

[0078] Cellulose acetate was dissolved in a mixed solution of 1,4-dioxane, lactic acid, methanol and acetone, and stirred at 60° C. for 9 hours to form a casting solution with a concentration of 14 wt%. Coating the casting solution on a 180-mesh nylon screen and drying to obtain a forward osmosis membrane containing the support layer and a polymer membrane layer, with a thickness of 200±20 μm, a water flux of 20LMH, and a salt cut-off rate of >90%.

[0079] Place the forward osmosis membrane at the position of the selective separation window in the state of 80-92wt% dehydration, and then use a hot press to heat press the forward osmosis membrane into the box. The hot-pressing temperature ...

Embodiment 2

[0085] Choose cornstarch as the raw material, and inject it into a five-sided solid box under the action of the injection molding machine, with a thickness of 10±5mm and a tensile strength of 45±5MPa, with a position for the optional separation window on one side.

[0086] Cellulose triacetate was dissolved in a mixed solution of 1,4-dioxane, lactic acid, methanol and acetone, and stirred at 65°C for 9 hours to form a casting solution with a concentration of 15wt%. Coating the casting solution on a 200-mesh polyester non-woven fabric and drying to obtain a forward osmosis membrane containing the support layer and a polymer film layer, with a thickness of 150±20 μm, a water flux of 15LMH, and a salt cut-off rate of >90%.

[0087] Place the forward osmosis membrane at the position of the selective separation window under the state of 88-90wt% dehydration, and then use a hot press to heat press the forward osmosis membrane into the box. The hot pressing temperature is 220-240 °C, ...

Embodiment 3

[0092] Choose cellulose as the raw material, and inject it into a five-sided solid box under the action of the injection molding machine, with a thickness of 15±5mm and a tensile strength of 55±5MPa, with a position for selecting a separation window on one side.

[0093] Polysulfone was dissolved in N-methylpyrrolidone and stirred at 60°C for 12 hours to form a casting solution with a concentration of 15wt%. The casting solution is coated on a 200-mesh polyester non-woven fabric to obtain an ultrafiltration base membrane. After drying or drying the basement film, soak it in the prepared 2% m-phenylenediamine aqueous solution for 8 minutes, take it out, dry it in the shade, soak it in the prepared n-hexane solution of 0.1% trimesoyl chloride for 90 seconds, and then soak it in the 100 Heat treatment at ℃ for 7 minutes to obtain a composite forward osmosis membrane with a thickness of 150±20 μm, a water flux of 15LMH, and a salt cut-off rate of >90%.

[0094] Place the forward ...

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Abstract

The invention discloses a protective box for protecting growth of plant seedlings. A box body made of biodegradable plastic film is provided with a selective separator window made of a forward osmosis film; earth containing fertilizer is provided with in the box body; osmotic pressure of the fertilizer is higher than that of water in a mud flat or saline-alkali soil; the water in the mud flat or saline-alkali soil spreads to the roots of seedlings through the forward osmosis film; the seedlings are provided with moisture required by growth, and robust growth of the seedlings is guaranteed; when the seedlings grown up and can bear the mud flat or saline-alkali soil, the box body degrades and mixes in the soil to improve the mud flat or saline-alkali soil, and sustainable development of the mud flat or saline-alkali soil is maintained.

Description

technical field [0001] The invention belongs to the field of plant planting, and in particular relates to a protective box for growing plant seedlings. Background technique [0002] With the rapid development of my country's national economy and society, the contradiction between population growth and arable land reduction has become increasingly prominent. All kinds of saline soil resources, especially tidal flats, as an important land reserve resource, urgently need to be developed, utilized and protected. Tidal flats refer to the muddy beaches along the coast. Tidal flat reclamation is an effective means to alleviate the conflict between more people and less land in coastal areas. It can expand human development space and improve water conservancy conditions. Reclaimed tidal flats can be used as agricultural land to support economic development. my country advocates and encourages coastal areas to use tidal flats to reclaim fields and expand the area of ​​cultivated land....

Claims

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Application Information

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IPC IPC(8): A01G9/10
CPCA01G9/0291
Inventor 薛立新张安将赵秀兰盛建芳刘义平
Owner NINGBO LIANHUA ENVIRONMENTAL SCI & TECH
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