CN106431576A - Rice seedling-raising substrate for rice transplanter and preparation method of rice seedling-raising substrate - Google Patents
Rice seedling-raising substrate for rice transplanter and preparation method of rice seedling-raising substrate Download PDFInfo
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- CN106431576A CN106431576A CN201610885671.XA CN201610885671A CN106431576A CN 106431576 A CN106431576 A CN 106431576A CN 201610885671 A CN201610885671 A CN 201610885671A CN 106431576 A CN106431576 A CN 106431576A
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05D—INORGANIC FERTILISERS NOT COVERED BY SUBCLASSES C05B, C05C; FERTILISERS PRODUCING CARBON DIOXIDE
- C05D9/00—Other inorganic fertilisers
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- Life Sciences & Earth Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
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- Pest Control & Pesticides (AREA)
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Abstract
The invention discloses a rice seedling-raising substrate for a rice transplanter and a preparation method of the rice seedling-raising substrate. The preparation method includes the following steps: 1, firstly mixing crop straw and animal manure according to a dry-matter ratio of 6:(3-4), inoculating an organic material decomposing agent with a mass ratio of 0.5-1%, regulating the water content of the mixed materials and conducting composting fermentation; 2, mixing the compost product obtained in step 1, peat soil and vermiculite according to a dry-matter ratio of 7:2:1, and regulating the water content of the mixed materials for conducting composting fermentation; adding a water-retaining agent to the compost product obtained in step 2 and conducting stirring at 85-90 DEG C for 5-6h; 3, drying the materials obtained after high temperature treatment by air-drying or baking until the water content is 30-40%, and conducting crushing and screening to obtain the rice seedling-raising substrate for the rice transplanter. The rice seedling-raising substrate not only can achieve the resource utilization of agricultural wastes, but also the prepared substrate has stable material properties, moderate nutrient content and volume weight; the content of biological toxic substances is low, the water-retaining capacity is strong, the growth of rice seedlings is significantly promoted, and the rice seedling-raising substrate is suitable for rice seedling raising for the rice transplanter.
Description
Technical field
The present invention relates to field of rice cultivation, especially relates to a kind of seedling raising ground substance of rice planting technology and its preparation side
Method.
Background technology
It is developing modern agriculture, the important content for improving rice planting mechanization level that rice mechanization educates rice transplanting, and machine
The key technique of rice transplanting success or not is seedling.As transplanting area is increasing, the lance of a protrusion in seedling
Shield is increasingly displayed, that is, the acquisition of Nutrition Soil.By taking Jiangsu Province as an example, 20,000,000 mu of transplanting area in 2012, greatly
2,000,000 cubes of Nutrition Soil is about needed, the workload that not only fetches earth is huge, and the no desirable problem of soil is increasingly faced, for
This problem, prepares seedling raising ground substance using people's work and replaces conventional nutraceutical soil to carry out raising rice seedlings, the especially cultivation of transplanting
Increasingly it is widely used.
Rice planting technology seedling raising ground substance is both a kind of seedling medium, but with other crops such as some vegetables, nursery stock nursery base
Matter difference, has its own some property to require.First, as rice nursery substrate, should possess preferable aeration and
Water-retaining property, enriches and full nutrition, subacidity, relatively low salt content, meets rice seedling growth and requires, is beneficial to rice shoot root system
Development and growth, neatly go out seedling.Secondly, as transplanting substrate, host material is acted on to root growth unrestraint, the seedling of cultivation
Seedling improving activity of root system is high, and disk knot property is good, neatly cuts and plant so as to mechanization in bulk.Transplanting is suitable in order to explore
Seedling raising ground substance and preparation method thereof, to substitute conventional nutraceutical soil, improves seedling quality and transplanting effect, in recent years related neck
Domain expert has carried out numerous studies：The Chinese patent literature of Publication No. CN105000972A is educated there is provided a kind of transplanting Oryza sativa L.
Seedling substrate and preparation method thereof, after cattle manure, rice husk powder anaerobic fermentation, it is 60%-65% to extrude desalination, be dehydrated to moisture content,
Biogas residue is carried out secondary aerobic fermentation with turf mix and blend by salinity 0.5-0.15 liter/milligram afterwards, adds Vermiculitum, treasure afterwards
Zhu Yan, turf and rice husk powder, are obtained the transplanting rice seedling raising ground substance；The document of Publication No. CN104926440A is disclosed
A kind of seedling raising ground substance suitable for transplanting Oryza sativa L. and preparation method thereof, which is main with the side-product Testa Tritici of wheat processing flour
Raw material, adds distiller grains, carries out, using high temperature decomposing agent, fermentation maturity process 15-20 days of banking up, is mixed in proportion after drying and crushing again
Conjunction wormcast, Vermiculitum, sodium silicate are configured to compound rice seedling raising ground substance；The patent documentation of Publication No. CN103449930A is then
A kind of compound method of the rice seedling raising ground substance for being suitable to transplanting is disclosed, thin vinegar, Vermiculitum and turf are pressed volume successively for which
Than 66.7%：16.65%：After 16.65% is sufficiently mixed and mixes thoroughly, rice seedling raising ground substance is configured to；Publication No.
The patent documentation of CN102204495A discloses a kind of utilization Flammulina velutiper (Fr.) Sing and discards the method that compost produces rice seedling raising ground substance, with gold
Discarded compost after pin mushroom industrialized cultivation terminates is fermented for primary raw material, adds food in ferment middle turning
Level Cosan reduces pH, is mixed in proportion peat, Vermiculitum etc. again and is configured to pH value 6.0 or so after fermentation ends, total nutrient content
3% or so, the suitable nutritive type rice seedling raising ground substance of nitrogen phosphoris and potassium fertilizer ratio.
Transplanting seedling raising ground substance preparation process disclosed in document above, its raw material is powdered rice hulls, Testa Tritici, distiller grains or/and food
With bacterium garbage compost etc., add the raw materials such as a certain proportion of peat, Vermiculitum again after compost fermentation and make, be all not directed to
Seedling raising ground substance technical method is prepared using agricultural crop straw for primary raw material.Relevant using agricultural crop straw make raising rice seedlings base
Matter, also some patent achievements are reported so far.Chinese patent literature as Publication No. CN101828491A discloses a kind of Oryza sativa L.
Seedling raising ground substance and its production method, will be crushed to after corn straw inoculation yeast bacterium and the lactic acid bacteria compost fermentation of 40-60 mesh, then
The product of compost fermentation is pressed 60-80%, 15-25% and 5-15% with industrial processes Paper pulp waste residue liquid, industrial fluidized bed boiler ground-slag
Proportions are formed；Additionally, the correlation such as Publication No. CN105660236A, CN105294318A, CN104774100A utilizes agriculture
Crop material is used as the patent of rice seedling raising ground substance, and its straw consumption is all less than the 30% of total raw material amount.Its preparation method, all
For straw and other primary raw materials such as co-fermentation system such as cattle manure, anhydrobiosis sludge, acid-sludge, manioc waste, brewing industry sludge
Obtain, or straw adds other fermenting raw materials to be obtained after carbonization；The Chinese patent literature of publication number CN105801286A is then
Disclose a kind of Oryza sativa L. plate rice breeding substrate and preparation method thereof, its by after straw charring, according to weight ratio by carbonization straw, rice
Field dry ground, compound fertilizer and soil sterilants mixing, wherein the weight ratio of carbonization straw are that 60%, the weight ratio of rice field dry ground is
39%, compound fertilizer N：P：K=15：15：15 ratio is 0.05%～0.5%, and remainder is soil sterilants, but its charcoal
It is really a kind of composting fermentation process to change straw preparation process, non-anaerobic pyrolysis physics carbonization.
Prepare in terms of patented technology from above-mentioned seedling raising ground substance, be related to from raw material angle special with agricultural crop straw as primary raw material
Profit is few, how the crop material with consumption below 30% or completely dispenses with crop material, selects using other organic wastes
Raw material produces rice seedling raising ground substance；Processing technology angle is many based on the fermentation of many materials co composting, and tunning is directly made
It is that seedling raising ground substance or some additives of interpolation are fabricated to seedling raising ground substance.These processing technology, usually insufficient due to fermenting, rotten
Ripe degree is inadequate, produces strong ferment in second time after material contact water, so as to cause because anoxia, microorganism and root system contention nutrient,
Produce the impact seedling growth such as harmful gass.
Content of the invention
For existing seedling raising ground substance generally existing water-absorbing-retaining ability, poor, the nutritional labeling imbalance of biological stability etc.
Problem, the present invention provides a kind of rice planting technology seedling raising ground substance and preparation method thereof, to ensure preferable nursery effect, is conducive to
Cultivate well developed root system, disk and the strong strong sprout of ability is tied, while a large amount of straws and feces of livestock and poultry innoxious use is solved the problems, such as, this
Bright it is realized in：
A kind of rice planting technology seedling raising ground substance, including compost product, peat soil, Vermiculitum, it is characterised in that the rice planting technology
The effective ingredient of seedling raising ground substance be by compost product, peat soil and Vermiculitum according to dry 7:2:Obtain after 1 mass ratio mixing；
Wherein, the compost product is obtained by：By agricultural crop straw and feces of livestock and poultry according to dry 6 3～4 matter
After the mixing of amount ratio, inoculation accounts for the organic matter decomposing inoculant of agricultural crop straw and feces of livestock and poultry gross mass 0.5～1%, and regulation contains
Water rate is 65～75%, then compost fermentation 45～60 days.
Further, in rice planting technology seedling raising ground substance of the present invention, agricultural crop straw refer to be crushed to length 5cm with
Under Oryza sativa L., Semen Tritici aestivi, Semen Maydiss, one or several in rape stalk.
Further, also include to account for having for rice planting technology seedling raising ground substance in rice planting technology seedling raising ground substance of the present invention
The water-retaining agent of effect composition quality 0.1%.
Further, in rice planting technology seedling raising ground substance of the present invention, the water-retaining agent is polyacrylamide, polyethylene
One kind or any combination in alcohol, Polyethylene Glycol.
A kind of preparation method of rice planting technology seedling raising ground substance of the present invention, comprises the following steps that：
A) agricultural crop straw is mixed by the mass ratio of dry 6 3～4 with feces of livestock and poultry, inoculation quality percent be 0.5～
1% organic matter decomposing inoculant, it is 65～75% to adjust material water ratio, carries out compost fermentation, obtains compost after 45-60 days
Product；
B) by compost product, peat soil, Vermiculitum according to mass ratio 7:2:1 mixing, adjusts moisture content 55～60%, carries out heap again
Fertilizer fermentation, obtains the effective ingredient of rice planting technology seedling raising ground substance after 7-10 days；
C) effective ingredient of rice planting technology seedling raising ground substance and water-retaining agent (are accounted for rice planting technology seedling raising ground substance effective ingredient quality
1%) it is placed in 85～90 DEG C to process 5～6 hours, period is stirred material and takes a breath；
D) by step C) process after dry materials to moisture content be 30～40%, broken and cross 20mm sieve and obtain the Oryza sativa L.
Transplanting seedling raising ground substance.
Further, in the preparation method of rice planting technology seedling raising ground substance of the present invention, step A) agricultural crop straw
Refer to be crushed to the Oryza sativa L. below length 5cm, Semen Tritici aestivi, Semen Maydiss, the one kind in rape stalk or any combination.
Further, in the preparation method of rice planting technology seedling raising ground substance of the present invention, step C) described material is carried out
Stirring and ventilation are referred to：Stir speed (S.S.) is 4-20rpm, and ventilation volume is 40～50 times of volume of material per hour.
Organic matter decomposing inoculant of the present invention refers to that technical specification meets《Agricultural microbial agent》(GB20287-
2006) decomposing agent for requiring.
The present invention is with agricultural crop straws such as Oryza sativa L., Semen Tritici aestivi, Semen Maydiss, Brassica campestris Ls as primary raw material, former as auxiliary with feces of livestock and poultry
Material, inoculation organic matter decomposing inoculant carries out compost fermentation, and compared with prior art, its advantage is embodied in：
1) the additional humid heat treatment of compost fermentation twice is present invention employs, and adds stable performance in substrate manufacturing process
The good peat soil of property and Vermiculitum, it is ensured that straw material becomes thoroughly decomposed the stability of degree and combustion, will not be because during seedling
It is to produce ferment in second time burn seedlings phenomenon using a large amount of stalk easily biological-degradable materials as substrate raw materials for production.
2) using appropriate feces of livestock and poultry as nutrient conditioner, the substrate products of production are nutritious, general equilibrium and content
Moderate.
3) using high temperature wet heating, ferment in second time material is processed, not only can complete inactivation crop material, poultry
The harmful organisms such as the pathogenic microorganism of feces raw material remaining, weed seed, but also ventilation can be passed through in the process
The harmful substance of the impact seedling growth such as hydrogen sulfide that in composting fermentation process, local anaerobic is accumulated is removed, and produces little point in a large number
Sub- organic acid, reduces substrate products acid-base value, the growth of favourable rice shoot.
Description of the drawings
Fig. 1 is rice planting technology seedling raising ground substance flow sheet
Specific embodiment
In embodiment, organic material composting microbial inoculum is purchased from Nanjing Ning Liang biological engineering company limited, and its technical specification meets
《Agricultural microbial agent》(GB20287-2006) require.
Embodiment 1
1st, 20 tons of water intaking rice straw (butt), Mechanical Crushing to straw length is below 5cm, adds feces of livestock and poultry (the present embodiment
Used in cattle manure, other feces of livestock and poultry can also be used in specific operation process) 13.3 tons (butt), inoculation (rice straw and
Cattle manure) in gross mass 0.5% (W/W) organic material composting microbial inoculum specific implementation process, the dosage of inoculation of organic matter decomposing inoculant
Can control between 0.5%-1%), stirred with large-scale blender, and the regulation material water ratio that adds water is (general to 75%
Moisture control is 65～75%), pile stacking and fermented；Every turning in 3～5 days once, 45～60 days are fermented i.e.
Obtain compost product；In concrete operations, general winter composting 60d, summer composting 45d；
Agricultural crop straw used in the present embodiment is rice straw, in being embodied as, it is possible to use be crushed to below length 5cm
Oryza sativa L., Semen Tritici aestivi, Semen Maydiss, the one kind in rape stalk or any combination；
The ratio of agricultural crop straw and feces of livestock and poultry can control between the mass ratio of dry 6 3～4.
2nd, after first time compost fermentation terminates, compost product, peat soil and Vermiculitum are taken according to mass ratio 7:2:1 mixing, and
Add water regulation mixing water content of matter 60% (general moisture control is in 55-60%), carries out secondary compost after stirring
Fermentation, obtains the effective ingredient of rice planting technology seedling raising ground substance after 7-10 days；In specific operation process, general winter compost
10d, summer compost 7d, turning 2～3 times during compost.
3rd, after second compost terminates, by the effective ingredient 20m of rice planting technology seedling raising ground substance3Volume is delivered to for 30m3
In the damp and hot reactor of high temperature, the water-retaining agent polyacrylamide of material dry weight 0.1% is added, in 85～90 DEG C of high temperature humid heat treatment 5-
6 hours, period was stirred to material and takes a breath；Stir speed (S.S.) be 4-20rpm, per hour ventilation volume for volume of material 40～
50 times (in the present embodiment, reactor ventilation volume is 1000m3/h)；
In specific operation process, water-retaining agent can use a kind of or arbitrary group in acrylamide, polyvinyl alcohol, Polyethylene Glycol
Close.
4th, by the material after high temperature humid heat treatment, remove from reactor and air-dry or dry to moisture content 30-35%, then by
Chain-type crusher in crushing, the 20mm that sieves is sieved, you can packaging becomes rice planting technology seedling raising ground substance finished product.
Embodiment 2
30 tons of wheat stalk (butt) is taken, and straw length is crushed to for below 5cm, is added 16.2 tons of pig manure (butt), is inoculated with (little
Wheat Straw and pig manure gross mass) 0.75% (W/W) organic material composting microbial inoculum, stirred with large-scale blender, and the tune that adds water
Section material water ratio is to 65%, and piling stacking carries out fermentation 45-60 days, obtains compost product, and period was every turning one in 3～5 days
Secondary；
After first time fermentation ends, compost product, peat soil and Vermiculitum in mass ratio 7 is taken:2:After 1 mixing, add water regulation mixing
Water content of matter 55%, carries out secondary compost fermentation after stirring, obtain having for rice planting technology seedling raising ground substance after 7-10 days
Effect composition；After secondary compost terminates, by secondary compost material 30m3Volume is delivered to for 45m3The damp and hot reactor of high temperature, admixture
The polyvinyl alcohol of material dry weight 0.1%, in 90 DEG C of high temperature humid heat treatment 5 hours, stir speed (S.S.) was 4-20rpm, reactor ventilation volume
For 1500m3/h；
Material after high temperature humid heat treatment, removes from reactor and air-dries to moisture content 30-35%, chain-type crusher in crushing,
The 20mm that sieves is sieved, and divides and can return secondary compost on sieve, and lower point of sieve can be packed becomes rice planting technology seedling raising ground substance finished product.
Embodiment 3
Take 50 tons of corn straw (butt), be crushed to below 10cm, add 21.4 tons of chicken manure (butt), inoculation (corn straw and
Chicken manure gross mass) 1.0% (W/W) organic material composting microbial inoculum, stirred with large-scale blender blender, and the instrumentality that adds water
Material moisture content is to 70%, and piling stacking carries out fermentation 45-60 days, that is, obtain compost product, and period is every turning in 3～5 days once；
After first time compost fermentation terminates, compost product, peat soil and Vermiculitum in mass ratio 7 is taken:2:1 adds water again adjusts mixing
Water content of matter 55%, carries out secondary compost after stirring, obtain effectively becoming for rice planting technology seedling raising ground substance after 7-10 days
Point；
After second compost fermentation terminates, by the effective ingredient 42m of rice planting technology seedling raising ground substance3Volume is delivered to for 60m3High
Warm and humid thermal response kettle, adds the polyacrylamide of material dry weight 0.05% and 0.05% polyvinyl alcohol, carries out 80～85 DEG C high
Warm and humid heat treatment 6 hours, it is 2100m that stir speed (S.S.) is 4-20rpm, reactor ventilation volume3/h；
Material after high temperature humid heat treatment, removes from reactor and air-dries to moisture 30-35%, chain-type crusher in crushing, mistake
Sieve 20mm is sieved, point secondary compost of return on sieve, and lower point of sieve can be packed becomes rice planting technology seedling raising ground substance finished product.
Embodiment 4
The substrate that the rice planting technology seedling raising ground substance that embodiment 1-3 is obtained is prepared with traditional method carries out seedling and field cultivation
Contrast test.
The preparation method of traditional matrices：Straw, feces and peat soil, four kinds of raw material sources of Vermiculitum and consumption are with embodiment 1；
Straw and excrement composting ferment 70 days, without organic material composting microbial inoculum in composting process；After compost terminates, by compost product
Uniform traditional matrices are sufficiently mixed with peat soil, Vermiculitum.High temperature humid heat treatment is not carried out, without water-retaining agent.
Take rice planting technology seedling raising ground substance and the traditional matrices of the acquisition of equivalent embodiment 1,2,3, compile successively as A, B respectively and
C and tetra- kinds of process of D, respectively educate 30 disk of rice seedling (Wu-Yu-Geng 3) in the conventional way.After seedling in 25 days terminates, using rice transplanting
Machine, carries out machine (Kubo field spw-68c rice transplanter) and plants, and area 667m is planted in each process2.Seedling and the water after planting
The field management measures such as fertilizer, medication are routinely carried out.During test, to be bred as rice shoot, plant the growth of cereal crop seedlings and the Oryza sativa L. of latter 1 month
Yield is monitored, and the results are shown in Table 1：
1 Different Raising Seedling substrate application effect of table
As it can be seen from table 1 compared with traditional method, three kinds of seedling mediums that the inventive method makes, significantly improve Oryza sativa L.
Seedling quality.Especially, the substrate that this method makes can remarkably promote root growth, and root/shoot ratio is improved by traditional matrices 0.65
To 0.77～0.87.Rice seedling well developed root system, improves disk knot ability of the root system during nursery, is conducive to machinery point root
Rice transplanting.The rice shoot being bred as using this method, after transplanting, Oryza sativa L. easily founds Seedling and survives, and seedling-slowing stage is short, tiller morning, and the rice nutrition phase is long
Gesture is significantly better than traditional control, and effectively increases crop number of productive ear and grain number per spike, volume increase effect compared with traditional matrices seedling
Fruit reaches 5% or so.
Claims (7)
1. a kind of rice planting technology seedling raising ground substance, including compost product, peat soil, Vermiculitum, it is characterised in that the rice mechanical transplanting
The effective ingredient of seedling seedling raising ground substance be by compost product, peat soil and Vermiculitum according to dry 7:2:Obtain after 1 mass ratio mixing
?；
Wherein, the compost product is obtained by：By agricultural crop straw and feces of livestock and poultry according to dry 6 3～4 matter
After the mixing of amount ratio, inoculation accounts for the organic matter decomposing inoculant of mixture quality 0.5～1%, and it is 65～75% to adjust moisture content, then heap
Fertilizer fermentation 45～60 days.
2. rice planting technology seedling raising ground substance according to claim 1, it is characterised in that the rice planting technology seedling raising ground substance
In also include to account for the water-retaining agent of the effective ingredient effective ingredient quality 0.1% of the rice planting technology seedling raising ground substance.
3. rice planting technology seedling raising ground substance according to claim 2, it is characterised in that the agricultural crop straw refers to crush
One or several in Oryza sativa L., Semen Tritici aestivi, Semen Maydiss, rape stalk to length 5cm.
4. rice planting technology seedling raising ground substance according to claim 2, it is characterised in that the water-retaining agent be
One kind or any combination in amine, polyvinyl alcohol, Polyethylene Glycol.
5. as described in one of claim 1-4 rice planting technology seedling raising ground substance preparation method, it is characterised in that concrete steps are such as
Under：
A）Agricultural crop straw is mixed by the mass ratio of dry 6 3～4 with feces of livestock and poultry, inoculation quality percent be 0.5～
1% organic matter decomposing inoculant, it is 65～75% to adjust material water ratio, carries out compost fermentation, obtains compost product after 45-60 days
Thing；
B）By compost product, peat soil, Vermiculitum according to mass ratio 7:2:1 mixing, adjusts moisture content 55～60%, carries out heap again
Fertilizer fermentation, obtains the effective ingredient of rice planting technology seedling raising ground substance after 7-10 days；
C）Water-retaining agent is added in the effective ingredient of rice planting technology seedling raising ground substance, is placed in 85～90 DEG C and processes 5～6 hours,
Period is stirred to material and takes a breath；
D）By step C）Dry materials after process are 30～40%, that is, to obtain the rice planting technology seedling raising ground substance to moisture content.
6. the preparation method of rice planting technology seedling raising ground substance described in 5 is required according to claim, it is characterised in that step C）Described
Material is stirred and ventilation is referred to：Stir speed (S.S.) is 4-20rpm, and ventilation volume is 40～50 times of volume of material per hour.
7. the preparation method of rice planting technology seedling raising ground substance described in 5 is required according to claim, it is characterised in that step A) described
Agricultural crop straw refers to be crushed to the Oryza sativa L. below length 5cm, Semen Tritici aestivi, Semen Maydiss, the one kind in rape stalk or any combination.
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| CN111226742A (en) * | 2020-01-15 | 2020-06-05 | 辽宁省水稻研究所 | Rice seedling raising substrate and preparation method thereof |
| CN111387011A (en) * | 2020-04-16 | 2020-07-10 | 凤台县淮之苗农业发展有限公司 | Rice seedling raising matrix |
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| CN110622821A (en) * | 2019-10-29 | 2019-12-31 | 青岛九天智慧农业集团有限公司 | Saline-alkali-resistant rice seedling raising substrate |
| CN110810199A (en) * | 2019-11-27 | 2020-02-21 | 北京市首发天人生态景观有限公司 | Culture medium for roof greening and preparation method thereof |
| CN111226742A (en) * | 2020-01-15 | 2020-06-05 | 辽宁省水稻研究所 | Rice seedling raising substrate and preparation method thereof |
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