CN104351161B - A kind of nursery groundbed soil disinfection machine structure and method - Google Patents
A kind of nursery groundbed soil disinfection machine structure and method Download PDFInfo
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Abstract
The present invention relates to agricultural mechanical field, particularly relate to a kind of nursery groundbed soil disinfection machine structure and method. This disinfecting mechanism comprises disinfect box and rotary tillage clod-crusher; Described rotary tillage clod-crusher is arranged on disinfect box, for the groundbed that rotary tillage is to be sterilized; Described disinfect box sprays sterilisation vapour to for described groundbed. Broken for rotary tillage soil and agricultural chemicals sterilization are become one by this disinfecting mechanism, make soil mix fully with sterilisation vapour by the groundbed that rotary tillage is to be sterilized; Adopting the mode that the mobile broken soil of rotary tillage and steam infiltrate, the applicable nursery soil bed produced in centralization, will carry out steam sterilizing fast again after soil fragmentation such that it is able to realize thoroughly being sterilized by nursery soil bed.
Description
Technical field
The present invention relates to agricultural mechanical field, particularly relate to a kind of nursery groundbed soil disinfection machine structure and method.
Background technology
Soil disinfection, as the important method of control soil disease, is widely used in nursery groundbed operation always. Soil is the main medium that disease and pest is propagated, and is also the main place of disease and pest breeding. Many bacteriums, nematode, virus, worm's ovum and insect etc. all can survive in soil, in addition, also often have weed seed in soil; And, the cultivated area along with melon and fruit, vegetables, flowers, medicinal plant etc. with economic worth crop constantly expands, the high-density planting of industrialized agriculture and a kind of crop of plantation year after year on same block of soil; These situations all can cause the growth and breeding of soil-borne disease pathogenic bacteria above. If this kind of disease is controlled not in time, the serious underproduction can be caused and reduce quality product, even can cause total crop failure. Therefore, in order to make soil more be added with productivity, prevent disease and pest from destroying and weakening the growth of farm crop, whether seedbed soil, potted flower soil, outdoor nursery, the soil in protected field such as farmland or warmhouse booth, all soil should be carried out thorough disinfection before use.
Soil disinfection is one of important measures of control soil-borne disease, is the standard program that agro-industryization is produced, and soil disinfection can be realized by pyroprocessing and the method such as disinfect.
High-temperature processing method is again physical disinfection method, is the method utilizing high temperature to kill germ, worm's ovum and weed seed, and the method is simple, but owing to using the combustiblesubstances such as fuel oil easily to cause environmental pollution, and production cost is higher, it is difficult to use on a large scale.
Disinfect and it is chemical disinfection, be utilize disinfectant to directly act on soil, the method for killing pathogenic bacteria, worm's ovum, effective, it may also be useful to general.But, owing to prior art can not be taken into account rotary tillage mode and the integrated operation of agricultural chemicals gas injection sterilization, uneven and the pharmaceutical quantities easily causing medicament to distribute in dispenser is difficult to the problem of control, cannot realize quickly and efficiently soil being carried out thorough disinfection, also cannot reach save energy, it is to increase the object of operation efficiency simultaneously.
Therefore, for above deficiency, it is necessary to broken for rotary tillage soil and agricultural chemicals sterilization can be become one by one, make soil mix sufficient disinfecting mechanism and method with sterilisation vapour by the groundbed that rotary tillage is to be sterilized.
Summary of the invention
(1) technical problem solved
The technical problem to be solved in the present invention there is provided a kind of nursery groundbed soil disinfection machine structure and method, make it possible to become one broken for rotary tillage soil and agricultural chemicals sterilization, by the groundbed that rotary tillage is to be sterilized, soil is mixed fully with sterilisation vapour, thus realize thorough disinfection.
(2) technical scheme
In order to solve the problems of the technologies described above, the present invention provides a kind of nursery groundbed soil disinfection machine structure, comprises disinfect box and rotary tillage clod-crusher; Described rotary tillage clod-crusher is arranged on disinfect box, for the groundbed that rotary tillage is to be sterilized; Described disinfect box is used for spraying sterilisation vapour to described groundbed.
Wherein, described disinfect box is provided with controller, the sterilisation vapour that described controller exports for regulating and controlling described disinfect box.
Wherein, being provided with the nozzle for spraying sterilisation vapour in described disinfect box, described controller controls described nozzle by flow aperture valve.
Wherein, this disinfecting mechanism also comprises vapour generator, and described vapour generator is connected with disinfect box by pneumatic tube, and described vapour generator is for generation of sterilisation vapour.
Wherein, described vapour generator is provided with the burner for thermal sterilization steam.
Wherein, this disinfecting mechanism also comprises blower fan and air-supply wheel, and described blower fan is connected with air-supply wheel; Described air-supply wheel is positioned at disinfect box, spreads described sterilisation vapour for accelerating.
The present invention also provides a kind of method of described nursery groundbed soil disinfection machine structure, comprising:
S1, by thermal sterilization agricultural chemicals produce sterilisation vapour;
S2, sterilisation vapour is delivered to disinfect box;
S3, by rotary tillage clod-crusher, groundbed to be sterilized being carried out rotary tillage process, disinfect box sprays sterilisation vapour to rotary tillage soil simultaneously.
Wherein, step S3 also comprise by controller to injection sterilisation vapour amount regulate, rotary tillage soil is fully contacted with sterilisation vapour.
(3) useful effect
The technique scheme of the present invention has following useful effect: the present invention provides a kind of nursery groundbed soil disinfection machine structure, by rotary tillage clod-crusher, nursery groundbed carried out the broken soil of rotary tillage, simultaneously, sterilisation vapour is sprayed to rotary tillage soil by disinfect box, thus broken for rotary tillage soil and agricultural chemicals sterilization are become one, soil is mixed fully with sterilisation vapour, thus realizes thorough disinfection. This disinfecting mechanism adopts the mobile broken soil of rotary tillage and the mode of steam infiltration, and the applicable nursery soil bed produced in centralization, will carry out steam sterilizing fast again after soil fragmentation such that it is able to realize thoroughly being sterilized by nursery soil bed.
Accompanying drawing explanation
Fig. 1 is the working state figure of embodiment of the present invention nursery groundbed soil disinfection machine structure;
Fig. 2 is the working state figure of embodiment of the present invention sterilisation system;
Fig. 3 is the structural representation of embodiment of the present invention nursery groundbed soil disinfection machine structure;
Fig. 4 is the workflow diagram of embodiment of the present invention sterilisation system.
Wherein, 1: travel mechanism;2: disinfecting mechanism; 3: steam heating mechanism; 4: seedling; 5: road; 6: pneumatic tube; 7: blast tube; 8: combustion chamber; 9: vibration damper plate; 11: vehicle frame; 12: lifting device; 13: walking wheel; 21: disinfect box; 22: rotary tillage clod-crusher; 23: gas-holder; 24: blower fan; 25: air-supply wheel; 31: vapour generator; 32: burner; 33: solar panel; 34: thermofin; 211: nozzle.
Embodiment
Below in conjunction with drawings and Examples, embodiments of the present invention are described in further detail. Following examples are for illustration of the present invention, but can not be used for limiting the scope of the invention.
In describing the invention, unless otherwise explanation, the implication of " multiple " is two or more; Term " on ", D score, "left", "right", " interior ", " outward ", " front end ", " rear end ", " head ", the orientation of the instruction such as " afterbody " or position are closed is based on orientation shown in the drawings or position relation, it is only the present invention for convenience of description and simplified characterization, instead of indicate or imply that the device referred to or element must have specific orientation, with specific orientation structure and operation, therefore can not be interpreted as limitation of the present invention. In addition, term " first ", " the 2nd ", " the 3rd " etc. are only for describing object, and can not be interpreted as instruction or hint relative importance.
In describing the invention, it is necessary to explanation, unless otherwise clearly defined and limited, term " installation ", " being connected ", " connection " should be interpreted broadly, such as, it is possible to be fixedly connected with, it is also possible to be removably connect, or connect integratedly; Can be mechanically connected, it is also possible to be electrical connection; Can be directly be connected, it is also possible to be indirectly connected by intermediary. For the ordinary skill in the art, it is possible to particular case understands above-mentioned term concrete implication in the present invention.
As shown in Figure 1, the present invention provides a kind of nursery groundbed soil disinfection machine structure, comprises disinfect box 21 and rotary tillage clod-crusher 22; Rotary tillage clod-crusher 22 is arranged on disinfect box 21, for the groundbed that rotary tillage is to be sterilized; Meanwhile, disinfect box 21 sprays sterilisation vapour to rotary tillage soil. Broken for rotary tillage soil and agricultural chemicals sterilization can be become one by this nursery groundbed soil disinfection machine structure, by the groundbed that rotary tillage is to be sterilized, soil mixed fully with sterilisation vapour, thus thoroughly realize the object that nursery soil bed is sterilized.
In order to accurately sterilization operation can be carried out, the present embodiment is provided with in disinfect box 21 nozzle 211, nozzle 211 setting corresponding to rotary tillage clod-crusher 22, such as, nozzle 211 can just to the side being arranged on rotary tillage clod-crusher 22, for sterilisation vapour being injected in soil when rotary tillage clod-crusher 22 rotary tillage.
The rotary cultivator accessory that rotary tillage clod-crusher 22 can use for farmland with scratching, in reamer shape, carries out fragmentation by rotating to soil, and can be rotated by broken soil and throw aloft. The sterilisation vapour ejected from disinfect box 21 impacts soil particle, carries out on soil particle surface infiltrating sorption; And, by the space of soil particle, vapor stream spreads in the space of soil particle, and emphasis removes spore and the cause of disease of soil disease and pest remaining in soil particle space; Deep subsoil is fallen into after the soil particle of agricultural chemicals steam infiltration mixes again by rotary tillage effect. Utilize eddy current that enclosing sterilizing case 21 produces and impelling air-flow to improve to infiltrate and the degree of depth of infiltration, speed.
Being provided with controller on disinfect box 21, controller exports sterilisation vapour by nozzle 211, the control of flow aperture valve. Preferably, the spray orifice size of nozzle 211 and spray angle all can regulate, and the interval time of injection also can adopt pulsed current control; Flow aperture valve can be arranged on the path of sterilisation vapour, for steam regulation flow; Controller can carry out calculating thus auto-control quantity of steam according to interstices of soil operating speed and gas function, after setting interstices of soil parameter, controller can simulate the situation that agricultural chemicals steam infiltrates soil, the degree of absorption that soil particle is infiltrated by steam parcel can calculate automatically, and its degree of absorption can automatically adjust according to different interstices of soil.
It is worth explanation, controller can pass through computer, sensing detection device (sensor, magnetic valve) and data processing unit and realize this system being controlled in real time, comprising steam regulation amount, disinfecting time, sterilisation temp etc., wherein disinfecting time can be realized by the adjustment of walking speed and uninterrupted.
The present embodiment also comprises the vapour generator 31 for generation of sterilisation vapour, vapour generator 31 is connected with disinfect box 21 by pneumatic tube 6, vapour generator 31 is provided with the burner 32 for thermal sterilization steam, can effectively for disinfect box 21 provides sterilisation vapour.
The present embodiment also comprises blower fan 24 and air-supply wheel 25, and blower fan 24 is connected with air-supply wheel 25; Air-supply wheel 25 is positioned at disinfect box 21, for accelerating diffusion sterilisation vapour.
Concrete, blower fan 24 is connected by blast tube 7 with air-supply wheel 25, it is outside that blower fan 24 can be fixed on disinfect box 21, the high-speed rotation of flabellum is utilized to realize positive pressure air-supply, its high velocity air produced arrives air-supply wheel 25 by blast tube 7, air-supply wheel 25 is provided with multiple air outlet opening, and air-supply wheel 25 settings corresponding to rotary tillage clod-crusher 22, to accelerate the diffusion of sterilisation vapour in soil. Being worth illustrating, air-supply wheel 25 is not limited to certain particular form with the position relation of rotary tillage clod-crusher 22, as long as can ensure that make high velocity air can accelerate sterilisation vapour spreads in soil. Such as, as shown in Figure 2, air-supply wheel 25 is arranged on the left side of rotary tillage clod-crusher 22, and the high velocity air of air-supply wheel 25 generation can play perturbation action in soil pores, makes sterilisation vapour rapid diffusion to improve the specific absorption that steam infiltrates soil. And, also the degree of depth that sterilisation vapour spreads can be deepened to 20cm-25cm from soil surface, and the hard disinfecting soil on plough sole surface is processed so that post-depositional rainwater can not produce the environment being beneficial to the growth of soil objectionable impurities.
As shown in Figure 2, the present embodiment also comprises travel mechanism 1, and for driving, disinfect box 21 and rotary tillage clod-crusher 22 move travel mechanism 1 between groundbed. Travel mechanism 1 comprises vehicle frame 11 and lifting device 12, and the both sides of vehicle frame 11 are separately installed with walking wheel 13, and walking wheel 13 can move along cement road 5. Lifting device 12 is arranged on vehicle frame 11, and lifting device 12 adopts electronic lifting disinfecting mechanism 2, for driving disinfecting mechanism 2 lifting moving, has carried out lift-off and has changed bed; Disinfecting mechanism 2 is taken turns between 13 two groups of walkings, for nursery soil bed is carried out sterilization operation.
The present invention also provides the sterilization method of this nursery groundbed soil disinfection machine structure of a kind of application, comprising:
S1, by thermal sterilization agricultural chemicals produce sterilisation vapour;
S2, sterilisation vapour is delivered to disinfect box;
S3, by rotary tillage clod-crusher, groundbed to be sterilized being carried out rotary tillage process, disinfect box sprays sterilisation vapour to rotary tillage soil simultaneously.
Wherein, step S3 also comprise by controller to injection sterilisation vapour amount regulate, rotary tillage soil is fully contacted with sterilisation vapour.
The present embodiment, when agriculture production, can be used alone, it is also possible to by with other mechanical means complement each other to form sterilisation system.
This sterilisation system comprises travel mechanism 1, disinfecting mechanism 2 and steam heating mechanism 3; Steam heating mechanism 3 can adopt sun power that pestsides synthesis gas is added thermogenesis sterilisation vapour; Certainly, the electrically heated mode of use can also be assisted when illumination condition lower grade. The sterilisation vapour of heating is inputed to disinfecting mechanism 2 by steam heating mechanism 3; Travel mechanism 1 drives disinfecting mechanism 2 to move, so that it carries out sterilization operation between nursery groundbed; Nursery groundbed soil disinfection machine structure in above-mentioned can be used as the disinfecting mechanism 2 of sterilisation system, it is as the main element of sterilization operation, under the drive of travel mechanism 1, this disinfecting mechanism 2 makes the mixing of soil and sterilisation vapour contact by the groundbed that rotary tillage is to be sterilized, thus realize quick, energy-conservation, thoroughly the native bed of nursery is sterilized. And, this system takes into account rotary tillage mode and the integrated operation of agricultural chemicals gas injection sterilization, effectively prevent the problem that the uneven and pharmaceutical quantities easily causing medicament to distribute in dispenser is difficult to control.
As shown in Figure 2, disinfecting mechanism 2 comprises above-mentioned disinfect box 21 and rotary tillage clod-crusher 22, and disinfect box 21 is fixed in travel mechanism 1, can advance between nursery soil bed with travel mechanism 1; Rotary tillage clod-crusher 22 is arranged on the bottom of disinfect box 21, for the groundbed that rotary tillage is to be sterilized. The rotary cultivator accessory that rotary tillage clod-crusher 22 can use for farmland with scratching, in reamer shape, carries out fragmentation by rotating to soil, and can be rotated by broken soil and throw aloft. The sterilisation vapour ejected from disinfect box 21 impacts soil particle, carries out on soil particle surface infiltrating sorption; And, by the space of soil particle, vapor stream spreads in the space of soil particle, and emphasis removes spore and the cause of disease of soil disease and pest remaining in soil particle space; Deep subsoil is fallen into after the soil particle of agricultural chemicals steam infiltration mixes again by rotary tillage effect. Utilize eddy current that enclosing sterilizing case 21 produces and impelling air-flow to improve to infiltrate and the degree of depth of infiltration, speed.
The present embodiment steam heating mechanism 3 can carry out work when energy-saving manner, it comprises vapour generator 31 and gas-holder 23, the cavity for generation of sterilisation vapour it is provided with in vapour generator 31, vapour generator 31 is provided with burner 32, and, on vapour generator 31, ecto-entad is disposed with solar panel 33 and thermofin 34; Preferably, solar panel 33 can be electrically connected with burner 32, thus provides electric energy, effective save energy for burner 32. Burner 32 is connected with gas-holder 23 by pneumatic tube 6, and burner 32 is for thermal sterilization steam, and is inputed in gas-holder 23 by the sterilisation vapour after heating.
Gas-holder 23 is fixed in travel mechanism 1 to carry out pressurization deposit, and gas-holder 23 is connected with disinfect box 21. In addition, gas-holder 23 can also be connected with combustion chamber 8, it is achieved two grades of heating of sterilizing gas and energy storage, reach save energy object, and improve operation efficiency; Also can ensure two kinds of different agricultural chemicals are burnt and mixed, it is achieved the object of Multiple Pesticides gas and vapor permeation operation simultaneously.Certainly, according to practical situation, it is possible to remove two grades of portable combustion chambers 8, only rely on solar heating to carry out independent operation. Agricultural chemicals can be carried out heating by gas combustion chamber 8 that the present embodiment carries according to demand to be made it evaporate to become gas, thus avoids pulling of decontamination duct network, and can inject directly on after the pressurizing in airtight disinfect box 21.
When this sterilisation system uses, if in the early stage of nursery, namely soil bed does not have seedling 4, in the disinfect box 21 of sealing, soil rotary tillage can be thrown in the air, make its process fallen by autoclave sterilization gas percussion aloft, the soil impacted rebounds again after moving to the sidewall of disinfect box 21, thus again infiltrates. Soil particle after these fragmentations can improve the degree of absorption that gas infiltrates, and within the time of 2s to 3s, the temperature of airtight disinfect box can be constant in 125 DEG C-160 DEG C, and soil particle gap can increase, and disinfection efficiency is increased substantially. And in seedling 4 vegetative period, the sterilization operation of organic gas can be carried out. Processing temperature is adjusted to 22-28 degree, rotary tillage clod-crusher 22 of dismantling, seedling seedling body and seedling stromal surface are sterilized, and make organic gas diffusion arrive the inside sterilization operation of matrix by space.
In the present embodiment, sterilisation vapour can adopt various ways, comprises hot steam and halogenation hardship, can single use, it is possible to used in combination. Agricultural chemicals in vapour generator 31 after three times are pulverized sieving, can become sterilisation vapour through heating flame; Sterilisation vapour also can be passed through concussion humidifier and pre-treatment to be adjusted within the scope of 25 DEG C-30 DEG C.
As shown in Figure 3, the working process of this sterilisation system is:
S1, on groundbed to be sterilized, interval arranges many for the roads current for travel mechanism;
After S2, operation start, sterilization agricultural chemicals is heated by the mode that steam heating mechanism can utilize sun power and electric energy to assist, thus produces hot steam; And by the adjustment of quantity of steam, it is achieved block is fast, energy-conservation, thoroughly sterilized by the native bed of nursery; Blower fan also can be adopted simultaneously to blow, accelerate vapor mixing, and then the sterilisation vapour after heating can be delivered to disinfecting mechanism carry out sterilization operation.
S3, disinfecting mechanism make soil fully contact with sterilisation vapour by the groundbed that rotary tillage is to be sterilized; Disinfecting mechanism, after the broken soil of rotary tillage, is undertaken by rotary tillage clod-crusher and enclosing sterilizing case throwing soil, the smoked soil of hot steam and frying soil, utilize eddy current that enclosing sterilizing case produces and impelling air-flow improve infiltrate and permeate the degree of depth, speed.
After S4, the end of job, disinfecting mechanism is driven to switch between many roads by travel mechanism; Complete electronic hoist and change an action by lifting device. This system carries out cycle operation after arriving adjacent soil bed, always till the end of job.
Step S3 also comprises the quantity of steam being controlled sterilisation vapour by controller, and soil is fully contacted with sterilisation vapour. Concrete, controller is by setting interstices of soil parameter, system can calculating simulation agricultural chemicals steam infiltrate soil time, the degree of absorption that soil particle is infiltrated by steam parcel can calculate automatically, different soil gap absorbs and automatically can regulate according to different interstices of soil, according to setting parameter and diffusion model, the adjustable soil disinfection quantity of steam Q of controller, by regulating, pressure realizes spray angle �� and the adjustment of spraying pressure P for it. The formula specifically describing solutes accumulation of sterilizing in macrovoid is as follows:
Ct=ft(z), t=0, z > 0;
Wherein, V is flow velocity; C is solute concentration; D is disperse coefficient of combination; �� is moisture content; Z is vertical range; �� (cF-cS) it is the medicament solute exchange linear value between soil matrix and macrovoid.
When sterilisation vapour solute enters in soil in a pulsed fashion, first entering macrovoid, and then enter soil matrix, transport of solute can describe as follows:
In formula, �� is moisture content, and C is sterilizing gas solute concentration, CmFor flowing solute concentration, CimFor adsorbing solute concentration on noncurrent soil, �� is flowing gas moisture content ��mWith the ratio of adsorption by soil moisture �� in whole sterilising zone, 1-�� is non-mobile moisture ��imWith the ratio of adsorption by soil moisture �� in whole sterilising zone,It is a rank sterilization solute rate of exchange, DmFor soil macropore dispersion coefficient, Z is vertical range, jmFor soil water flux, t is the time, and model can calculate ��mValue, this value and Q are linear relationships, by the automatic control inputs relation conefficient of controller. By regulating pressure to regulate spray angle �� and spraying pressure P to realize, thus improve the uniformity coefficient of sterilization solute.
Embodiments of the invention in order to example and describe for the purpose of and provide, and be not exhaustive or limit the invention to disclosed form. Many modifications and variations are apparent for the ordinary skill in the art. Selecting and describing embodiment is the principle in order to the present invention is better described and practical application, and the those of ordinary skill enabling this area is understood the present invention thus designed the various embodiments with various amendment being suitable for specific end use.
Claims (7)
1. a nursery groundbed soil disinfection machine structure, it is characterised in that, comprise disinfect box (21) and rotary tillage clod-crusher (22); Described rotary tillage clod-crusher (22) is arranged on disinfect box (21), for the groundbed that rotary tillage is to be sterilized; Described disinfect box (21) is for described groundbed injection sterilization agricultural chemicals steam;
Also comprising blower fan (24) and air-supply wheel (25), described blower fan (24) is connected with air-supply wheel (25); Described air-supply wheel (25) is positioned at disinfect box (21), spreads described sterilization agricultural chemicals steam for accelerating.
2. nursery groundbed soil disinfection machine structure according to claim 1, it is characterised in that, described disinfect box (21) is provided with controller, the sterilization agricultural chemicals steam that described controller exports for regulating and controlling described disinfect box (21).
3. nursery groundbed soil disinfection machine structure according to claim 2, it is characterized in that, being provided with the nozzle (211) for spraying sterilization agricultural chemicals steam in described disinfect box (21), described controller controls described nozzle (211) by flow aperture valve.
4. nursery groundbed soil disinfection machine structure according to claim 1, it is characterized in that, also comprise vapour generator (31), described vapour generator (31) is connected with disinfect box (21) by pneumatic tube (6), and described vapour generator (31) is for generation of sterilization agricultural chemicals steam.
5. nursery groundbed soil disinfection machine structure according to claim 4, it is characterised in that, described vapour generator (31) is provided with the burner for thermal sterilization agricultural chemicals steam (32).
6. the method for a nursery groundbed soil disinfection machine structure according to any one of claim 1-5, it is characterised in that, comprising:
S1, by thermal sterilization agricultural chemicals produce sterilisation vapour;
S2, sterilisation vapour is delivered to disinfect box;
S3, by rotary tillage clod-crusher, groundbed to be sterilized being carried out rotary tillage process, disinfect box sprays sterilisation vapour to rotary tillage soil simultaneously;Also comprising blower fan and air-supply wheel, blower fan is connected with air-supply wheel; Air-supply wheel is positioned at disinfect box, for accelerating diffusion sterilisation vapour.
7. the method for nursery groundbed soil disinfection machine structure according to claim 6, it is characterised in that, step S3 also comprise by controller to injection sterilisation vapour amount regulate, rotary tillage soil is fully contacted with sterilisation vapour.
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| CN106900184A (en) * | 2017-02-14 | 2017-06-30 | 南京农业大学 | Facility canopy room soil rotary tillage steaming sterilizer |
| CN107182994B (en) * | 2017-05-19 | 2020-11-03 | 黑龙江省农业科学院耕作栽培研究所 | Rice field cultivation steam type insect control device for surface soil oviposition pests |
| CN110149824B (en) * | 2019-05-28 | 2022-02-15 | 江苏大学 | Rotary tillage and disinfection combined operation machine for greenhouse |
| CN112640707A (en) * | 2020-12-14 | 2021-04-13 | 云南农业大学 | Terminal enhanced heat transfer device of soil steam sterilizer |
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| CN1191664A (en) * | 1997-02-28 | 1998-09-02 | 阿尔塞加登有限公司 | Method for sterilising soils and equipment related thereto |
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