Background technology
With the continuous development and the modernization of agricultural production of agricultural cience and farming techniques, industrialized agriculture is rapidly growing in China,
Main Types of the greenhouse as industrialized agriculture, with obvious Social benefit and economic benefit, thus have obtained extensively in China
Application.
The growth cycle of plant is longer, such as Fructus Lycopersici esculenti, plucks from transplanting to and finishes the time for needing 5 months, and the collecting period is big
General is 60~80 days.If Fructus Lycopersici esculenti wants harvesting mid-October, then general mid-July will be planted in warmhouse booth.
Traditional chamber crop plantation needs ridging, then covers layer of plastic film on ridge, and then digs on ridge
Cave, finally by plant cultivating in cave.The Main Function of plastic sheeting is moisture-heat preservation, can be plant typically in spring, autumn, winter
Growth play well effect.According to document《Impact of the plastic-film-covered cultivation to corn yield》Statistics, the corn yield ratio of overlay film is not
The corn yield of overlay film is high by 8.43%.But in summer, as ambient temperature is higher, sunshine is strong, the soil under covered rearing with plastic film
Layer temperature is very high.And the Root-zone heating of plant suitable growth is typically in the range of 15~30 degrees Celsius.If plant is in the summer
Season plants, due to plant stem-leaf less, it is impossible to for root sunshade, the Root-zone heating of plant can easily exceed preference temperature;Meanwhile,
As the rhizome of plant seedlings is more fragile, young root easily necrosis at high temperature ultimately results in the rising of crop death rate.If
Crop not plastic covering thin film, then October, November ambient temperature reduce, and the insulating power of soil layer is poor, especially exists
Night, this can cause Root-zone heating again less than preference temperature, so as to slow down plant growth;The simultaneously soil layer of not plastic covering thin film
Than very fast, water loss is unfavorable for that soil layer moisturizing, weeds in exposed soil layer are relatively easy to grow.
From for the angle of environmental protection, peasant is just collected using easily collected after 1 year generally for convenient management, mulch film
After light, do not collect, just rotten in the ground, so can all cause environmental problem.The ground of current China Plastic-film pollution most serious
Side will count the cotton planting district in Xinjiang.A research report that announces for 2008 shows, in the cotton field of Xinjiang region, mulch film residual quantity
Average 265.3 kilograms of per hectare, and as the overlay film time limit is longer, pollute more serious.In Xinjiang, continuous overlay film 10 years, 15 years
With the cotton field of 20 years, mulch film residual quantity respectively 262 kilograms/hectare, 350 kilograms/hectare, 430 kilograms/hectare, most serious were dirty
Dye field agricultural mulching residual quantity is up to 597 kilograms/hectare.Generally, if mulch film will be spread to 1 hectare of land, make
About 60 kilograms of consumption, 597 kilograms of mulch film residual quantity is equivalent to having stored 10 layers of mulch film in ground.After seed sowing
If just on fragment, just had an impact to its germination, the phenomenon being short of seedling may be very serious, causes the underproduction.In addition meeting
The migration of moisture and nutrient is had influence on, the growth of crop root system is had an impact.According to surveying and determination, the with serious pollution soil of residual film can make
Wheat yield declines 2%~3%, and corn yield declines 10% or so, and output of cotton then declines 10%~23%.
Content of the invention
In view of this, it is necessary to which a kind of degradable biological base fluid body plastic film for agricultural use is provided.
There is a need to and a kind of production method of degradable biological base fluid body plastic film for agricultural use is provided.
A kind of degradable biological base fluid body plastic film for agricultural use, the composition of the degradable biological base fluid body plastic film for agricultural use include:
Cellulose sulfate monoester salt, hemicellulose sulfuric acid monoester salt, lignin sulfuric acid monoester salt, water.
A kind of degradable biological base fluid body plastic film for agricultural use, the composition of the degradable biological base fluid body plastic film for agricultural use include:
Cellulose sulfate monoester salt, hemicellulose sulfuric acid monoester salt, lignin sulfuric acid monoester salt, humic acid sulfuric acid monoester salt, water.
A kind of production method of degradable biological base fluid body plastic film for agricultural use is comprised the following steps:
The straw of powdery, stem are mixed as the first initial biological base manure;
1,2- dichloroethanes are weighed as solvent, the sulfur trioxide of liquid and part 1,2- dichloroethanes are mixed, three oxygen are formed
Change sulfur/1,2- dichloroethanes mixing liquids;
Again successively by remainder 1,2- dichloroethanes, the first initial biological base manure are added in sulphonation kettle, and Deca is above-mentioned
Sulfur trioxide/1,2- dichloroethanes mixing liquids, control response time and reaction temperature, so that the first initial biological base manure is through sulphur
Change reaction and generate the first sulfuric acid monoester, while obtaining the first sulfuric acid monoester mixed liquor containing 1,2- dichloroethanes;
Above-mentioned first sulfuric acid monoester mixed liquor and ammonia or aqua calcises are added in neutralization kettle and are neutralized reaction, shape
Into the first sulfuric acid monoester salt mixed liquor, in the first sulfuric acid monoester salt mixed liquor, contain the first sulfuric acid monoester salt;
By method of the first sulfuric acid monoester salt mixed liquor by vacuum distillation, so that 1,2- dichloroethanes are from first sulfur
Depart from acid monoester salt mixed liquor, to obtain the first sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes;
The first sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes is carried out being centrifuged, is washed, not contained
The filtering residue of the first sulfuric acid monoester salt mixed liquor of 1,2- dichloroethanes and filtrate, do not contain the first of 1,2- dichloroethanes by described
The filtrate of sulfuric acid monoester salt mixed liquor is separated by oil water separator, obtains the first sulfuric acid monoester saline solution, by described first
Sulfuric acid monoester saline solution is used as bio-based agricultural liquid film.
A kind of production method of degradable biological base fluid body plastic film for agricultural use is comprised the following steps:
The straw of powdery, stem are mixed with weathered coal as the second initial biological base manure;
1,2- dichloroethanes are weighed as solvent, the sulfur trioxide of liquid and part 1,2- dichloroethanes are mixed, three oxygen are formed
Change sulfur/1,2- dichloroethanes mixing liquids;
Again successively by remainder 1,2- dichloroethanes, the second initial biological base manure are added in sulphonation kettle, and Deca is above-mentioned
Sulfur trioxide/1,2- dichloroethanes mixing liquids, control response time and reaction temperature, so that the second initial biological base manure is through sulphur
Change reaction and generate the second sulfuric acid monoester, while obtaining the second sulfuric acid monoester mixed liquor containing 1,2- dichloroethanes;
Above-mentioned second sulfuric acid monoester mixed liquor and ammonia or aqua calcises are added in neutralization kettle and are neutralized reaction, shape
Into the second sulfuric acid monoester salt mixed liquor, in the second sulfuric acid monoester salt mixed liquor, contain the second sulfuric acid monoester salt;
By method of the second sulfuric acid monoester salt mixed liquor by vacuum distillation, so that 1,2- dichloroethanes are from the second sulphuric acid list
Depart from ester salt mixed liquor, to obtain the second sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes;
The second sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes is carried out being centrifuged, is washed, not contained
The filtering residue of the second sulfuric acid monoester salt mixed liquor of 1,2- dichloroethanes and filtrate, will not contain the second sulphuric acid of 1,2- dichloroethanes
The filtrate of monoester salt mixed liquor is separated by oil water separator, obtains the second sulfuric acid monoester saline solution, by second sulphuric acid
Monoesters saline solution is used as bio-based agricultural liquid film.
Beneficial effect:
1. derivant of the bio-based agricultural liquid film in the present invention comprising cellulose and lignin, can natural degradation, degraded
Material can be used as the slow-release fertilizer of soil, will not be to environment;The artificial work link of picking up thin film is eliminated simultaneously.
2. the conjunctiva light transmittance for being formed after the bio-based agricultural liquid membrance concentration dehydration in the present invention is low, can reduce
Root-zone heating, heat and moisture preserving improve the survival rate of plant, while inhibiting the growth of weeds.
3. the life-span of the bio-based agricultural liquid film in the present invention was up to 5~6 months, it is to avoid crop is in growth course
Middle bio-based agricultural liquid film rots to fail, and affects plant growth.
4. the conjunctiva opposed plastic thin film for being formed after the bio-based agricultural liquid membrance concentration dehydration in the present invention, paper membrane
The viral incidence rate of Long summer cultivation plant can be reduced.
5. the bio-based agricultural liquid film in the present invention, every mu of price as little as 100~130 yuan/mu, and plastic foil price
For 160~250 yuan/mu, cost is therefore greatly reduced.
Specific embodiment
In order to be illustrated more clearly that technical scheme, it is described in detail below in conjunction with embodiment.
The embodiment of the present invention proposes a kind of degradable biological base fluid body plastic film for agricultural use, and its composition includes:Cellulose, wooden
Element, cellulose sulfate monoester salt, hemicellulose sulfuric acid monoester salt, lignin sulfuric acid monoester salt, water.
Used as a kind of preferred embodiment, the embodiment of the present invention also proposes a kind of degradable biological base fluid body plastic film for agricultural use,
Its composition includes:Cellulose, hemicellulose, cellulose sulfate monoester salt, hemicellulose sulfuric acid monoester salt, lignin sulfuric acid monoester
Salt, humic acid sulfuric acid monoester salt, water.
A kind of production method of degradable biological base fluid body plastic film for agricultural use is comprised the following steps:
S101:The straw of powdery, stem are mixed as the first initial biological base manure.
S102:1,2- dichloroethanes are weighed as solvent, the sulfur trioxide of liquid and part 1,2- dichloroethanes are mixed,
Form sulfur trioxide/1,2- dichloroethanes mixing liquids.
It should be noted that there is no chemical reaction in the mixing of sulfur trioxide and 1,2- dichloroethanes, 1,2- dichloroethanes
It is intended only as solvent.Specifically a kind of operating process is:Sulfur trioxide gaseous mixture is delivered in sulfonation by sulfur trioxide air-introduced machine
Test cell, after the condensation of sulfur trioxide condenser, sulfur trioxide gas condensation becomes liquid, fixed gas to sulfur trioxide gaseous mixture
Body is emptied;Sulfan drops to the tourie equipped with 1,2- dichloroethanes, so that sulfur trioxide is by 1,2- dichloroethanes
Absorb, to obtain sulfur trioxide/1,2- dichloroethanes mixing liquids.
S103:Again successively by remainder 1,2- dichloroethanes, the first initial biological base manure are added in sulphonation kettle,
Above-mentioned sulfur trioxide/1 of Deca, 2- dichloroethanes mixing liquids, control response time and reaction temperature, so that the first first eozoon
The sulfonated reaction of base manure generates the first sulfuric acid monoester, while obtaining the first sulfuric acid monoester mixed liquor containing 1,2- dichloroethanes.
In this step, solvent of 1, the 2- dichloroethanes as sulfur trioxide so that be dissolved in the three of 1,2- dichloroethanes
Sulfur oxide can biological base manure initial with first there is sulfonating reaction quickly so that organic in the first initial biological base manure
Matter generates the first sulfuric acid monoester with sulfur trioxide reaction.First sulfuric acid monoester includes:Cellulose sulfate monoesters, hemicellulose
Sulfuric acid monoester, lignin sulfuric acid monoester.Response time and reaction temperature in the step can be:Reaction temperature is 10~50
DEG C, preferably 20~40 DEG C, the response time is 1~10h, preferably 3~6h.
S104:Above-mentioned first sulfuric acid monoester mixed liquor and ammonia or aqua calcises are added in carrying out in neutralization kettle
And reaction, the first sulfuric acid monoester salt mixed liquor is formed, in the first sulfuric acid monoester salt mixed liquor, contains the first sulfuric acid monoester salt.
First sulfuric acid monoester salt therein includes cellulose sulfate monoester salt, hemicellulose sulfuric acid monoester salt, lignin sulfur
Acid monoester salt;The first sulfuric acid monoester salt-mixture mixed liquor refers to a kind of solidliquid mixture comprising sulfuric acid monoester saline solution.
Ammonia generates sulfuric acid monoester ammonium with sulfuric acid monoester reaction, and calcium hydroxide generates sulfuric acid monoester calcium with sulfuric acid monoester reaction.
S105:By method of the first sulfuric acid monoester salt mixed liquor by vacuum distillation so that 1,2- dichloroethanes from
Depart from the first sulfuric acid monoester salt mixed liquor, to obtain the first sulfuric acid monoester salt mixing for not containing 1,2- dichloroethanes
Liquid.
S106:The first sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes is carried out being centrifuged, is washed, with
To filtering residue and the filtrate of the first sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes, 1,2-, bis- chloroethenes are not contained by described
The filtrate of the first sulfuric acid monoester salt mixed liquor of alkane is separated by oil water separator, obtains the first sulfuric acid monoester saline solution, by institute
The first sulfuric acid monoester saline solution is stated as bio-based agricultural liquid film, the composition of the bio-based agricultural liquid film includes cellulose
Sulfuric acid monoester salt, hemicellulose sulfuric acid monoester salt, lignin sulfuric acid monoester salt, water.
Used as a kind of preferably embodiment, the present invention also proposes a kind of degradable biological base fluid body plastic film for agricultural use thing liquid ground film
Production method, the method is in the feed and to add weathered coal, and then causes in the biological base manure of production comprising humic acid
Sulfuric acid monoester salt component.
A kind of production method of degradable biological base fluid body plastic film for agricultural use is comprised the following steps:
S301:The straw of powdery, stem are mixed with weathered coal as the second initial biological base manure.
S302:1,2- dichloroethanes are weighed as solvent, the sulfur trioxide of liquid and part 1,2- dichloroethanes are mixed,
Form sulfur trioxide/1,2- dichloroethanes mixing liquids.
S303:Again successively by remainder 1,2- dichloroethanes, the second initial biological base manure are added in sulphonation kettle,
Above-mentioned sulfur trioxide/1 of Deca, 2- dichloroethanes mixing liquids, control response time and reaction temperature, so that the second first eozoon
The sulfonated reaction of base manure generates the second sulfuric acid monoester, while obtaining the second sulfuric acid monoester mixed liquor containing 1,2- dichloroethanes.
Wherein, solvent of 1, the 2- dichloroethanes as sulfur trioxide so that be dissolved in the sulfur trioxide energy of 1,2- dichloroethanes
Enough there is sulfonating reaction quickly with initial biological base manure, so that the organic matter in initial biology base manure is reacted with sulfur trioxide
Generate the second sulfuric acid monoester.Second sulfuric acid monoester includes:Cellulose sulfate monoesters, hemicellulose sulfuric acid monoester, lignin
Sulfuric acid monoester, humic acid sulfuric acid monoester.Reaction temperature in the step is 10~50 DEG C, and preferably 20~40 DEG C, the response time is 1
~10h, preferably 3~6h.
S304:Above-mentioned second sulfuric acid monoester mixed liquor and ammonia or aqua calcises are added in carrying out in neutralization kettle
And reaction, the second sulfuric acid monoester salt mixed liquor is formed, in the second sulfuric acid monoester salt mixed liquor, contains the second sulfuric acid monoester salt.
Wherein, the second sulfuric acid monoester salt includes:Cellulose sulfate monoester salt, hemicellulose sulfuric acid monoester salt, wooden
Plain sulfuric acid monoester salt, humic acid sulfuric acid monoester salt.The 3rd sulfuric acid monoester salt-mixture mixed liquor refers to a kind of comprising sulphuric acid list
The solidliquid mixture of ester saline solution.Ammonia generates sulfuric acid monoester ammonium with sulfuric acid monoester reaction, and calcium hydroxide is reacted with sulfuric acid monoester
Generate sulfuric acid monoester calcium.
S305:By method of the second sulfuric acid monoester salt mixed liquor by vacuum distillation so that 1,2- dichloroethanes from
Depart from second sulfuric acid monoester salt mixed liquor, to obtain the second sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes.
S306:The second sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes is carried out being centrifuged, is washed, with
To filtering residue and the filtrate of the second sulfuric acid monoester salt mixed liquor for not containing 1,2- dichloroethanes, 1,2- dichloroethanes will not contained
The filtrate of the second sulfuric acid monoester salt mixed liquor is separated by oil water separator, obtains the second sulfuric acid monoester saline solution, by described
Two sulfuric acid monoester saline solution include cellulose sulfate as bio-based agricultural liquid film, the composition of the bio-based agricultural liquid film
Monoester salt, hemicellulose sulfuric acid monoester salt, lignin sulfuric acid monoester salt, humic acid sulfuric acid monoester salt, water.
The molding mode of one preferably bio-based agricultural liquid film is:Bio-based agricultural liquid film is put into spray container
In, then sprayed according to predetermined per square metre of usage amount in field, natural after biological base fluid body plastic film for agricultural use dehydration
Form conjunctiva, it is preferred that bio-based agricultural liquid film conjunctiva is sprayed after 10 days again or irrigated bio-based agricultural liquid film,
Make the conjunctiva to be formed more stable.
One preferably can preferably weeding and significantly reduce ground temperature embodiment in, bio-based agricultural liquid film
Overlay capacity is 120~180 grams per square metre.
The content of organic matter >=50% after above-mentioned bio-based agricultural liquid film formation conjunctiva, total nutrient >=6%, moisture≤20%,
PH value is 5.5~8.5.After especially facility fruit and vegetable growth cycle terminates, the basic decomposition of paper, without decomposition for industrialized agriculture
Directly can plough deeply into field, as the composition of bio-based agricultural liquid film includes the derivant of cellulose and lignin, can be natural
Degraded, will not be to environment.
Above-mentioned bio-based agricultural liquid film contains multiple natural activity groups and heterogeneous phenolic compound, easily by soil in
Humic acid in microbial degradation, and the catabolite of humic acid sulfuric acid monoester salt can increase soil aggregate, keep soil
The balance of trace element in earth, therefore can be used as the slow-release fertilizer of soil.Bio-based agricultural liquid film contains natural phenol hydroxyl simultaneously
Base and alcoholic extract hydroxyl group, with sequestering and cohesive, can chelate and fix trace element, greatly improve suction of the crop to trace element
Receive.
The conjunctiva that above-mentioned bio-based agricultural liquid film is formed in high temperature Long summer cultivation, relative to plastic sheeting, bio-based
The conjunctiva that agricultural liquid film is formed can reduce by 3 DEG C of Root-zone heating, relative without covered rearing with plastic film, reduce by 1 DEG C of Root-zone heating, soil
Earth humidity and plastic covering mulch film zero difference, but the conjunctiva that bio-based agricultural liquid film is formed can keep rhizosphere soil temperature and humidity
Relative constancy.
When the conjunctiva that bio-based agricultural liquid film is formed is used for high temperature Long summer cultivation, death rate can be significantly reduced, wherein
Plastic film mulching death rate 25.0%, without the conjunctiva that plastic film mulching death rate 8.45%, bio-based agricultural liquid film are formed
Death rate 0.57%.
Through testing, the covering with ground sheeting of conjunctiva opposed plastic and do not cover that bio-based agricultural liquid film is formed significantly can increase
Plus plants stems are thick, promote the increase of chlorophyll content, promote crop photosynthesis to strengthen, opposed plastic covering with ground sheeting, using life
The conjunctiva that thing base fluid body plastic film for agricultural use is formed can increase stem thick 15~20%, relative without plastic film mulching, using bio-based liquid
The conjunctiva that plastic film for agricultural use is formed can increase plants stems thick 8~13%, and opposed plastic covering with ground sheeting is covered with not, using biological base fluid
The chlorophyll content of the conjunctiva that body plastic film for agricultural use is formed increases by 12~16%.
Through test, opposed plastic mulch film is planted and is covered, and it is fresh that the conjunctiva that bio-based agricultural liquid film is formed dramatically increases overground part
Weigh 65.76%, increase underground part fresh weight 20.86%, underground part fresh weight is without dramatically increasing, but dramatically increases underground part dry weight 8.27%.
The conjunctiva that bio-based agricultural liquid film is formed can promote below root system to grow, opposed plastic covering with ground sheeting, warp
Test, total root that the conjunctiva that bio-based agricultural liquid film is formed can dramatically increase 11.68% are long.
With respect to covering with ground sheeting, the conjunctiva that bio-based agricultural liquid film is formed can significantly reduce the virus of Long summer cultivation crop
The generation of disease, through test, plastic film mulching virosiss occur 28%, and the conjunctiva virosiss that bio-based agricultural liquid film is formed are sent out
Raw 4%.