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Preparation method of easily-degradable liquid state mulching film capable of improving fertility and maintaining water

A liquid mulch film, easy to degrade technology, applied in botany equipment and methods, plant protection, plant protection cover, etc., can solve the problem of low film formation and cohesion, poor water and fertilizer retention, premature dissolution, detachment Film and other problems, to achieve the effect of easy degradation, improved fertilizer preservation effect, and reduced loss

Inactive Publication Date: 2019-01-11
陈太师
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem mainly solved by the invention is that the current liquid mulch products have low film-forming properties and cohesiveness, low film strength, cracking after spraying on the ground surface, ventilation and ventilation, and water retention and fertilizer retention effects. Poor, after being washed by rainwater, the defects of premature dissolution and stripping provide a preparation method for fertilization, water retention and easy degradation of liquid mulch

Method used

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  • Preparation method of easily-degradable liquid state mulching film capable of improving fertility and maintaining water

Examples

Experimental program
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Effect test

example 1

[0026]Ignite soybean straw to obtain straw ash, then mix natural coconut shell powder, straw ash, and water in a mass ratio of 2:1:3, place in a homogenizer for beating for 1 hour to obtain slurry, and mix 2.0L slurry, 400mL solid mass content Mix 20% biogas slurry, 20g peat, and 60g potassium nitrate into the fermenter, seal the fermenter, keep it in a greenhouse at 40°C for 8 days, take out the fermented liquid and put it in a water bath, add 100g of urea , 200mL of formaldehyde solution with a mass fraction of 37%, heated to 70°C, and stirred at a constant temperature for 3 hours to obtain a fattening pre-polyurea-formaldehyde glue, for later use; take 40g of sea shrimp shell powder and disperse it in 100mL of acetic acid solution with a mass fraction of 5% , add 2mL polysorbate-80 to the acetic acid solution, heat up to 70°C, stir and dissolve with a magnetic stirrer at a speed of 400r / min, and then use a high-speed disperser to disperse homogeneously at a speed of 5000r / mi...

example 2

[0028] Ignite soybean stalks to obtain straw ash, then mix natural coconut shell powder, straw ash, and water in a mass ratio of 2:1:3, place in a homogenizer for beating for 1 hour to obtain slurry, and mix 2.3L slurry, 450mL solid mass content Mix 20% biogas slurry, 23g peat, and 65g potassium nitrate into the fermenter, seal the fermenter, keep it in a greenhouse at 43°C for 9 days, take out the fermented liquid and put it in a water bath, add 110g of urea 1. 250mL of formaldehyde solution with a mass fraction of 37%, heated to 73°C, and stirred at a constant temperature for 3 hours to obtain a fattening pre-polyurea-formaldehyde glue, for later use; take 45g of sea shrimp shell powder and disperse it in 110mL of an acetic acid solution with a mass fraction of 5%. , add 2mL polysorbate-80 to the acetic acid solution, heat up to 75°C, stir and dissolve with a magnetic stirrer at a speed of 450r / min, and then use a high-speed disperser to disperse homogeneously at a speed of 5...

example 3

[0030] Ignite soybean stalks to obtain straw ash, then mix natural coconut shell powder, straw ash, and water in a mass ratio of 2:1:3, place in a homogenizer for beating for 2 hours to obtain slurry, and mix 2.5L slurry, 500mL solid mass content Mix 20% biogas slurry, 25g peat, and 70g potassium nitrate into the fermenter, seal the fermenter, keep it in a greenhouse at 45°C for 10 days, take out the fermented liquid and put it in a water bath, add 120g of urea , 300mL of formaldehyde solution with a mass fraction of 37%, heated to 75°C, and stirred at a constant temperature for 4 hours to obtain a fattening pre-polyurea-formaldehyde glue, for later use; take 50g of sea shrimp shell powder and disperse it in 120mL of acetic acid solution with a mass fraction of 5% , add 3mL polysorbate-80 to the acetic acid solution, heat up to 80°C, stir and dissolve with a magnetic stirrer at a speed of 500r / min, and then use a high-speed disperser to homogeneously disperse at a speed of 6000...

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Abstract

The invention belongs to the technical field of production agricultural mulching film, and more specifically relates to a preparation method of an easily-degradable liquid state mulching film capableof improving fertility and maintaining water. The preparation method comprises following steps: natural coconut shell flour, straw ash, and water are subjected to mixing and beating so as to obtain aslurry; the slurry, urea, glucose, peat, and the like are taken as fermentation raw materials, thermal insulation fermentation is carried out so as to obtain a broth; shrimp powder is taken as a raw material so as to obtain a shrimp shell gel solution; a fertility improving pre-polymerized urea formaldehyde gel solution, a mulching film water retention gel solution, and oxidized starch are mixed and heated so as to obtain a suspended dispersion liquid, and a lower layer gel solution is collected so as to obtain the easily-degradable liquid state mulching film. The mulching film water retentiongel solution is a chitosan-polyvinyl alcohol-sodium alginate composite film liquid; no secondary soil pollution is caused; the nutrient elements in composite fertilizer can be released slowly; fertility increasing and fertilizer retention effects are achieved; the mulching film water retention gel solution is capable of improving the stability of liquid state mulching film in wet soil; the fertility improving pre-polymerized urea formaldehyde gel solution and oxidized starch are subjected to crosslinking so as t oobtain the high viscosity water absorbing liquid state mulching film base material, and the application prospect is promising.

Description

technical field [0001] The invention belongs to the technical field of production of agricultural film preparation, and in particular relates to a preparation method of a fertilizer-increasing, water-retaining and easily degradable liquid film. Background technique [0002] Plastic film mulching cultivation is an important means in agricultural production. The use of plastic film mulching can meet the needs of crop warming, moisture conservation, and fertility maintenance. It is mainly used for early mulching of crops in northern, arid, and cold regions, as well as windproof and sand-fixing. Quality, early maturity and other functions. [0003] At present, there are plastic mulch and liquid mulch in agricultural application. The price of plastic mulch is high, and the application operation is time-consuming and laborious. Plastic mulch sometimes depletes soil moisture and nutrients in the early stage of crop growth, and precipitation is not easy to penetrate into the soil. ...

Claims

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Application Information

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IPC IPC(8): C08L61/24C08L5/04C08L5/08C08L29/04C08L3/10C08J5/18A01G13/02
CPCA01G13/0275C08J5/18C08J2361/24C08J2405/04C08J2405/08Y02A40/28
Inventor 陈太师章红英赵金晶
Owner 陈太师
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