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22 results about "Strip-till" patented technology

Strip-till is a conservation system that uses a minimum tillage. It combines the soil drying and warming benefits of conventional tillage with the soil-protecting advantages of no-till by disturbing only the portion of the soil that is to contain the seed row. This type of tillage is performed with special equipment and can require the farmer to make multiple trips, depending on the strip-till implement used, and field conditions. Each row that has been strip-tilled is usually about eight to ten inches wide.

Corrugated disc ditching drill seeder for saline-alkali soil wheat fertilization

The utility model relates to a corrugated disc ditching drill seeder for wheat fertilization in saline-alkali soil. The corrugated disc ditching drill seeder comprises a beam frame and a ditching piece, the ditching piece comprises a machine shell, a support and a corrugated disc. When the beam frame advances, the corrugated disc is used as a core ditching component to firstly contact with soil. The surface corrugated structure obviously increases friction force with soil, and the problem that a traditional disc slips in non-thawed saline-alkali soil is solved. The corrugated cutting edge of the corrugated disc cuts into a hard hardened layer through the shearing effect, and the fertilizer is conveyed to the bottom of the deep groove through the fertilizing pipe. Wherein the two ditching discs are arranged in a V shape, the shape of a ditch wall is continuously tidied, continuous and straight ditches are ensured, and intermittent fertilization caused by bounce of a common disc is avoided. The soil covering pinch roller completes operation closed loop following fertilization, and the pinch roller synchronously compacts surface soil when rolling.
Owner:SHIJIAZHUANG INST OF AGRI MODERNIZATION CHINESE ACAD OF SCI +1

Precision compound drill seeder capable of sowing seeds and fertilizers simultaneously and provided with driving rake

The utility model relates to the technical field of agriculture, and discloses a driving rake precision compound drill seeder capable of sowing seeds and fertilizers simultaneously, which comprises a soil preparation mechanism, a fertilizer application mechanism fixedly connected to the outer side of the soil preparation mechanism, a seedbed pressing mechanism fixedly connected to the outer side of the fertilizer application mechanism, and a seed and fertilizer box mechanism fixedly connected to the outer side of the fertilizer application mechanism. The outer side of the seed fertilizer box mechanism is fixedly connected with a transmission system mechanism, the outer side of the transmission system mechanism is rotatably connected with a seeding mechanism, the soil preparation mechanism comprises a driving rake tooth box, the outer side of the driving rake tooth box is fixedly connected with rake teeth, and one side of each rake tooth is fixedly connected with a bulldozing plate. According to the utility model, the fertilizer is sown to the required depth before the first pressing of the compound drill seeder, then the seedbed is pressed by the first pressing, the fertilizer is compacted, then the seeding is performed, and finally the seedling belt is compacted, so that the lodging resistance can be realized, and the yield can be improved.
Owner:SHANDONG UNIA AGRI MASCH CO LTD

Precise drill seeder

The invention belongs to the technical field of drill planters, and discloses a precision drill planter which comprises a rotary cultivator body, two connecting frames symmetrically arranged on the two sides of the outer portion of the rotary cultivator body, a rotary blade arranged on one side of the bottom of the rotary cultivator body and a rotary blade arranged on the other side of the rotary cultivator body. The two supporting frames are fixed to the top of the connecting frame, and the supporting frames are arranged on the side away from the rotary cultivator body; the appropriate pressure adjusting assembly is located on one side of the rotary cultivator body and used for compacting and covering soil on the sown seeds. The first hydraulic cylinder drives the hinge seat to move, the pressing wheel, the press wheel and the connecting shaft are lifted, the equipment can dynamically match the positive pressing force of the press wheel according to the soil moisture content, and the soil hardening risk of high-humidity clay land is remarkably reduced, so that the equipment is suitable for the seeding requirements and the soil moisture conservation effect of different wet clay lands; the seedling emergence quality of the seeds relative to different wet clay lands is greatly improved.
Owner:YANCHENG DUNTIAN MASCH MFG CO LTD

Precise quantitative morchella drill seeder for greenhouse

The invention relates to the field of morchella seeding, and discloses a greenhouse morchella precise quantitative drill seeder which comprises a traction assembly. A connecting assembly; a seeding assembly; a ploughing assembly; and a pressing assembly and a discharging assembly. By installing the angle-adjustable seeding assembly and driving the rotating strip through the first motor, the orientation and the inclination angle of the seed outlet can be dynamically and accurately changed, the hardness change of a seedbed and machine vibration are effectively coped, strains fall at the optimal angle, bounce and rolling of the strains after touching the ground are directly reduced, and the working efficiency is improved. The furrowing and seeding unit can accurately fall into a preset seedbed position, the problem of drop point deviation caused by non-adjustable angle of a fixed seeding pipe is solved, in addition, the seeding assembly and the ploughing assembly are linked through a hinge and an elastic element, so that the furrowing and seeding unit can passively adapt to surface fluctuation in the advancing process, and the consistency of seeding depth is maintained.
Owner:ANHUI ACAD OF AGRI SCI ECONOMIC CROPS RES INST

Combined wheat compound drill seeder

The invention relates to the technical field of compound drill planters, and particularly discloses a combined wheat compound drill planter which comprises a main mounting frame, a connecting plate is fixedly mounted on the left side of the main mounting frame, a protective shell is jointly arranged at the lower ends of the left sides of the connecting plate and the main mounting frame, and a deep ploughing assembly is arranged from the inner side to the lower end of the protective shell; through the integrated combination design of a main mounting frame, a connecting plate, a protective shell, a deep ploughing assembly, a screening assembly and a discharging assembly, coherent operation of deep ploughing, soil screening and precise discharging and sowing is achieved, step-by-step operation of multiple devices is not needed, and the problems that an existing drill seeder is single in function, low in operation efficiency and high in planting cost are effectively solved. Two connecting rods of the deep ploughing assembly are matched with connecting rings on the circumferential faces of the connecting rods and rotationally-arranged deep ploughing cutters, soil can be fully and deeply ploughed during operation, and meanwhile straw stubbles are preliminarily smashed.
Owner:SHANDONG YUZE AGRICULTURAL TECHNOLOGY CO LTD

Cultivation method of black pearl rice

The invention belongs to the technical field of rice cultivation, and particularly relates to a black pearl rice cultivation method which comprises the following steps: S1, seed selection: hybridizing rice in Dabie Mountain of Hubei province; s2, breeding: performing detoxification treatment on the seeds, drying in the sun for 1-2 days, selecting full seeds with high maturity, and cleaning the seeds twice with saline water; land with fertile soil is selected, it is ensured that all land parcels can be planted in a unified mode, and watering is convenient; s4, sufficient base fertilizer application, wherein operation is conducted through a fertilizer sowing machine; s5, ploughing: performing fine preparation and raking, making the upper part virtual and the lower part solid, and performing fine soil preparation; s6, sowing: sowing uniformly by using a rotary tillage drill seeder; s7, watering: watering within one day after sowing; s8, closed weeding, wherein weeding closed liquid medicine is sprayed on the second day after watering; the black pearl rice cultivated through the method is high in yield, good in rice taste and high in quality, the cultivation method is convenient to operate, the breeding work intensity is relieved, the breeding work efficiency is improved, and the method has important significance in accelerating the new variety cultivation process.
Owner:YIKEWENZHI SEED IND (HUBEI) CO LTD

Cultivation method of high-zinc and high-calcium rice

PendingCN120836384ARice cultivationSeederMountain-rice
The invention belongs to the technical field of rice cultivation, and particularly relates to a high-zinc and high-calcium rice cultivation method which comprises the following steps: S1, determining a planting plot, and ensuring unified planting; s2, rotary tillage: after wheat harvesting, the shorter wheat stubbles during wheat harvesting are, the better the wheat stubbles are, and a rotary cultivator or a straw returning machine is determined to be selected for the first rotary tillage according to the grass quantity condition in the land; s3, applying a base fertilizer: performing operation through a fertilizer sowing machine, and uniformly sowing; s4, secondary rotary tillage: ensuring the crushing degree of the straws; s5, sowing: selecting Hunan mountain rice to cultivate and hybridize, and sowing uniformly through a rotary tillage drill seeder; s6, watering, wherein flood irrigation is needed for the first time, and watering is conducted within one day after sowing; s7, closed weeding, wherein weeding closed liquid medicine is sprayed on the second day after watering; the rice cultivated through the method is good in taste and high in quality, the cultivation method is convenient to operate, the breeding work intensity is relieved, the breeding work efficiency is improved, and the method has important significance in accelerating the new variety cultivation process.
Owner:YIKEWENZHI SEED IND (HUBEI) CO LTD

An intelligent drill, control system and method

PendingCN122319817ASeederControl system
This invention provides an intelligent row seeder, control system, and method, relating to the field of intelligent agricultural equipment technology. The intelligent row seeder includes a single main frame with a press wheel, furrowing disc, and pressure spring assembly mounted on it. The main frame also integrates a sensor integration box and an edge computing control box. During field operation, the sensors scan the terrain and soil conditions in real time, and the edge computing control box issues commands based on AI algorithms to drive linear actuators to dynamically adjust the furrowing disc depth limiter to control the furrowing depth, and simultaneously drives the electronic control adjustment mechanism to change the downward pressure of the single-unit ground pressure spring in real time. This invention integrates AI perception and mechanical execution to achieve closed-loop adaptive adjustment of sowing depth and press pressure, effectively overcoming the uneven sowing depth caused by differences in terrain and soil quality, reducing energy consumption and labor costs, and achieving precision sowing.
Owner:BEIJING UNIV OF POSTS & TELECOMM +1

Wheat deep tillage fertilization targeted seeding precision drill

The application provides a wheat deep scarification fertilization targeted seeding precision strip seeding machine, comprising a main frame and an operating table, a strip-shaped deep scarification fertilization assembly, a tamping assembly, a seeding assembly, a material box assembly and a seeding material discharging driving wheel are installed on the main frame, the strip-shaped deep scarification fertilization assembly can avoid turning down the fertile soil and keep the surface fertility, the strip-shaped deep scarification replaces the overall deep ploughing, the deep scarification knife only carries out strip-shaped deep scarification below the planting row and does not overturn the soil, the fertile soil rich in organic matter and nutrients is basically kept in the original position and is not deeply buried at the bottom, which guarantees the best surface fertility environment required by seed germination and seedling growth, reduces deep layer water evaporation and preserves soil moisture and stores water, the tamping assembly can realize the following benefits: compacting loose soil, deep scarification leaves larger pores in the soil, tamping moderately compacts the pores and destroys the soil capillary, which cuts off the channel of deep layer soil moisture directly evaporating to the surface and effectively reduces water loss.
Owner:WEIFANG HANMA AGRI EQUIP CO LTD

Towed precision drill

This application relates to the technical field of agricultural machinery, and in particular to a traction-type precision row seeder, which includes a traction frame, a frame, a seed box, a sowing assembly, wheels, and a platform. The traction frame is located at the front of the platform, the seed box is located at the top of the platform, the frame and wheels are located on the left and right sides of the platform, and the sowing mechanism is located below the seed box. The seed box consists of two storage chambers, front and rear, with several guide blocks arranged in an array inside each chamber. The tops of the guide blocks are inclined. This application, by setting up staggered storage chambers, combined with the inclined guide blocks and guide rods with diamond-shaped plates inside the storage chambers, continuously guides the seeds, effectively preventing seed blockage at the discharge port and ensuring smooth seed discharge. Simultaneously, an electric hydraulic rod drives an adjustment plate at the bottom of the storage chamber to flexibly control the opening state of the control port, enabling switching between single-species sowing and mixed sowing of multiple crops, adapting to the sowing needs of different crops, and possessing strong versatility.
Owner:ZHONGKETENSEN (SHANDONG) INTELLIGENT EQUIP CO LTD

Seeder adjusting device and drill seeder

The utility model relates to the technical field of agricultural machinery, in particular to a seeder adjusting device and a drill seeder. The seeder adjusting device comprises a handle mounting seat, an inner shaft, an outer shaft, a mounting base, a first handle assembly, a second handle assembly, a first transmission mechanism and a second transmission mechanism; the outer shaft is arranged outside the inner shaft, one end of the inner shaft extends out of the outer shaft, is arranged on the handle mounting seat and is connected with the first handle assembly, the other end of the inner shaft extends out of the outer shaft and is connected with one end of the first transmission mechanism, and the other end of the first transmission mechanism is connected with the seed metering calibration connecting shaft; one end of the outer shaft is connected with the second handle assembly, and the other end is connected with the second transmission mechanism which is connected with the seeding rate adjusting shaft; two arc-shaped sliding grooves are formed in the handle installation base and are different in diameter, and the first handle assembly and the second handle assembly are arranged in the two sliding grooves respectively. According to the utility model, additional tools are not needed in overall operation, and the problem that the existing drill seeder is inconvenient to adjust the seed metering amount and calibrate and switch is solved.
Owner:LOVOL HEAVY IND CO LTD

A method, device, equipment and medium for electrically driving a seed drill

The application relates to a seeding method, device, equipment and medium of an electrically-driven strip seeder, the method comprising the following steps: if the current calibration value needs to be recalibrated, the current unit seeding amount corresponding to the unit angle of rotation of the seed shaft motor is calculated, and the current unit seeding amount is taken as the updated calibration value; based on the current speed of the electrically-driven strip seeder, the target time required by the electrically-driven strip seeder when driving in a unit area is calculated; the total seeding amount corresponding to a unit area in the current land is obtained, and based on the current unit seeding amount and the total seeding amount, the target angle of rotation required by the seed shaft motor when seeding the total seeding amount is calculated; and based on the target time and the target angle of rotation, the target rotating speed of the seed shaft motor is obtained. According to the application, the target rotating speed is adjusted to control the seeding speed, variable seeding can be realized, the automation degree and the accuracy of the seeding parameter adjustment of the seeder are improved, the current unit seeding amount can be automatically calculated, and therefore the accuracy and stability of the calibration result are improved.
Owner:LOVOL HEAVY IND CO LTD

Adjustable low-resistance ground breaking and fertilizing device and drill seeder

The utility model relates to an adjustable low-resistance ground breaking fertilization device and a drill planter, the fertilization device comprises a rack, a plurality of mounting mechanisms and a plurality of fertilizer discharging pipes, the plurality of mounting mechanisms are respectively mounted on the rack, and respectively move left and right on the rack and are positioned; the plurality of fertilizer discharging pipes are vertically mounted on the plurality of mounting mechanisms side by side respectively, and can move up and down and be positioned on the plurality of mounting mechanisms respectively. The utility model has the beneficial effects that the structure is simple, the design is reasonable, the fertilization operation of different row spacing and different depth of the drill seeder can be realized, the fertilizer distribution is changed into accurate and independent fertilization, the waste of the fertilizer and the risk of root burning are solved, and the use of a user is greatly met.
Owner:LOVOL HEAVY IND CO LTD

A fertilizer drill

PendingCN122319815ASeederAgricultural science
This invention provides a fertilizer strip seeder, relating to the field of strip seeder technology. The fertilizer strip seeder includes a traction device and a frame, the traction device and the frame being connected by a connecting shaft. It also includes: a fertilizer dispensing box, located at the upper end of the frame near the traction device, for storing and dispensing fertilizer; a seed dispensing box, located at the upper end of the frame, for storing seeds for sowing; and a fan integrated system, including a fan unit and a duct system. This fertilizer strip seeder, through the reciprocating rotation of a quantitative fertilizer dispensing shaft and the use of surface baffles to isolate fertilizer from above, enables quantitative fertilizer dispensing. By incorporating a disturbance lever mechanism, the fertilizer is continuously guided during its descent, preventing clumping and bridging, ensuring uniform and stable dispensing. This achieves the effect of ensuring uniform and continuous fertilizer dispensing, significantly improving fertilization accuracy, and solving the problems of fertilizer clumping, bridging, and blockage leading to abnormal fertilization.
Owner:ZHONGKETENSEN (SHANDONG) INTELLIGENT EQUIP CO LTD

Composite agricultural machine

The utility model relates to a composite agricultural machine which comprises a power head. The machine further comprises a rack, an engine, a transmission part, a rotary tillage part I, a drill seeder and a functional part; the front end of the rack is connected with a rotary support at the traction end of the power head; the transmission part comprises a transmission input end, a transmission output end I and a transmission output end II; the transmission input end is in transmission connection with a power output end of the engine; the power input end of the rotary tillage part I is in transmission connection with the transmission output end I; the drill seeder is mounted at the rear end of the rack; the functional part is installed and located between the first rotary tillage part and the drill seeder, the functional part is a second rotary tillage part or a power harrow or a soil crushing roller, and when the functional part is switched, the power input ends of the second rotary tillage part, the power harrow and the soil crushing roller are all in transmission connection with the second transmission output end. According to the multifunctional agricultural machine, multiple combination modes are achieved through replacement of the multifunctional part, and the technical problem that a traditional agricultural machine is single in function and not suitable for multiple soil environments is solved.
Owner:SHANDONG SHUANGQUAN WATER-SAVING IRRIGATION EQUIPMENT CO LTD

Strip tillage machine with walking supporting universal wheels during non-operation walking

The utility model provides a strip tillage machine with walking supporting universal wheels during non-operation walking. Comprising a machine frame, a lower suspension frame, a gearbox, an upper suspension frame, an oil tank, a radiator, a supporting walking universal wheel frame, a supporting shaft, a pressing roller, a soil covering disc, a strip tillage cutter roller, a depth limiting land wheel, a subsoiler, a grass poking wheel, a limiting nut, a stop dog, a supporting shaft base, a supporting shaft frame, a universal wheel frame, a supporting walking universal wheel, a fixing pin shaft, a pin shaft, a hydraulic cylinder, a fixing base plate and a hydraulic cylinder installation vertical plate. A supporting shaft mounting vertical plate, a supporting shaft mounting sliding sleeve, a supporting shaft frame seat plate, an n-shaped plate, a supporting shaft seat fixing plate and a stop block fixing pin are included. According to the strip tilling machine with the walking supporting universal wheel in the non-operation walking process, the walking supporting universal wheel is arranged in the middle of the rear portion of the strip tilling machine, when the strip tilling machine goes to an operation plot, the strip tilling machine is put down, the walking supporting effect is achieved, when the strip tilling machine goes to the operation plot, the wheel is put away, operation of a machine tool is not affected, and the problem is well solved.
Owner:JILIN CHENHUI AGRI EQUIP CO LTD

Row cleaner and row closer assemblies for strip till planters

A row cleaner connected to a strip till machine and adapted to clear mulch and other debris encountered in strip or low till planting. A row cleaner frame assembly includes a pair of row cleaner arms and a pair of clearing wheels configured to have a toe-in alignment. The pair of row cleaner arms share a common plane and are pivotally connected at a pair of pivot points common or close to the rotational axis of a cutting disc. The cutting disc is disposed intermediate the pair of row cleaner arms. The row cleaner arms are configured to maintain the clearing wheels in a close-proximity to the cutting disc to provide stretch and cut row clearing operation. An actuator pivotally adjusts the row cleaner assembly relative to the cutting disc. A pivot limiter restricts pivotal travel of the row cleaner to avoid damage to the actuator. A row closing section is provided and includes a lever adapted to adjust toe and / or camber of a closing wheel.
Owner:MARTIN RONALD STEVE

Agricultural no-tillage drill seeder

PendingCN122074252ATimely cleaning and maintenanceeasy to findSpadesPlantingSeederRatchet
The invention relates to the technical field of agricultural instruments, and discloses an agricultural no-tillage drill planter which comprises a drill planter body, a plurality of furrow openers are slidably mounted at the bottom of the drill planter body, the agricultural no-tillage drill planter further comprises a supporting rod fixedly mounted on the drill planter body, and a plurality of mounting boxes are fixedly mounted on the supporting rod; the mounting boxes are in limited sliding connection, and a storage box is fixedly mounted on the side, away from the furrow opener, of the supporting rod. The ratchet wheel rotates to drive powder in the material taking groove to fall to mark soil, later maintenance of workers is facilitated, meanwhile, the rotating speed of the ratchet wheel is monitored in real time through the Hall gear sensor, and when the ditching sowing depth is affected by straw accumulation caused by straw winding or straw cannot be cut off by the ditcher, the furrowing sowing depth can be accurately controlled. A driver can clean and maintain the furrow opener in time, the situation that the seeding depth is unqualified in a large area due to the fact that the furrow opener cannot reach the furrowing depth for a long time is prevented, the probability of seedling missing and ridge breaking or seed burning is reduced, and the seeding quality is guaranteed.
Owner:LINGBI JIU RUI NONGFA TECH CO LTD

Lodging-resistant cultivation method for oats in high-altitude area

The invention discloses a lodging-resistant cultivation method for oats in a high-altitude area in the technical field of oat cultivation, which comprises the following steps of: (1) selecting a terraced field of which the previous crop is beans or potatoes in a second gloomy, cold and cool area with the altitude of 2000-2300m; (2) mixing and sowing a naked oat variety Dingyan No.2 with the plant height of 1.3 m and a hulled oat variety 'Chibei'with the plant height of 1.1 m according to the weight ratio of 1: 1, wherein the total sowing amount is 11.25 kg / mu; (3) a precise drill seeder is adopted for operation, the line spacing is 15-20 cm, and the depth is 3-4 cm; (4) applying 5-10 kilograms of urea, 35-45 kilograms of calcium superphosphate and 10-20 kilograms of potassium sulfate per mu; (5) preventing aphids once in the elongation stage, and preventing aphids and armyworms once in the heading stage. The method has the advantages that the lodging resistance is effectively improved; 2, the yield of fresh grass and the quality of green hay are effectively improved; 3, the mechanical harvesting cost is reduced while the yield per mu is improved, so that the planting economic income is improved.
Owner:定西市农业科学研究院

Bar tillage method for crop rotation of corn stubbles and soybeans

The invention relates to the technical field of crop planting, in particular to a strip tillage method for crop rotation of corn stubbles and soybeans. The invention provides a strip ploughing method for crop rotation of corn stubbles and soybeans. The strip ploughing method comprises the following steps of previous-crop corn straw treatment, soil loosening, soybean seed treatment, sowing, fertilization and field management. According to the method, on the basis of protective cultivation, technologies such as cultivation mode optimization, agricultural machinery and agricultural technology combination and reasonable crop rotation weight losing are integrated and optimized, and through integrated optimization and improvement of technologies such as strip cultivation crop rotation soybean sowing, local interval deep scarification and interyear intermittent deep scarification, straw strip coverage interannual alternate crop rotation and the like, the problems of long-term continuous cropping of corn, high yield and high yield are solved. The problems of single and excessive consumption of nutrients, aggravated diseases and insect pests, reduced soil fertility, no increase in fertility and the like are solved.
Owner:JILIN AGRI SCI & TECH COLLEGE

Seed drill

The utility model belongs to the technical field of drill planters, and particularly relates to a seed drill planter which comprises a rack, a seed box is mounted on the rack, an adjustable ditching structure is mounted at the front end of the rack and comprises an adjusting mechanism movably arranged on the rack, a ditcher is slidably arranged at the upper limit of the bottom end of the adjusting mechanism, and the seed box is mounted on the rack. A plurality of seeders are mounted at the bottom of the seed box through a mounting plate, seeding discs are rotatably arranged in the seeders, and a driving mechanism for driving the seeding discs to rotate is mounted on the rack. According to the utility model, the furrow opener capable of adjusting the furrowing spacing and depth according to the planting density and depth requirements of different crops is used for furrowing the land; the driving mechanism drives the seeding disc to rotationally cooperate with the seeding cavity and the propping and sealing block to ensure quantitative seeding of seeds; when the seeding disc rotates until the seeding cavity is aligned with the seed outlet at the bottom, seeds slide down from the seed outlet and fall into a groove formed by the furrow opener along the seeding pipe, the soil covering pressing wheel covers the groove again and rolls the groove flat, and the continuous and quantitative seeding can be carried out by the machine.
Owner:HENAN CHUNTUO STEREO GREENING TECH CO LTD

Seeding quantity variation coefficient testing tool of drill seeder

The invention relates to the technical field of agricultural machinery, in particular to a drill seeder seeding quantity variation coefficient testing tool which comprises a base, a control assembly, a driving assembly, a supporting and fixing assembly and a collecting assembly. The supporting and fixing assembly is arranged on the base and is used for supporting and fixing the drill seeder; the collecting assembly is arranged on the base, corresponds to a seeding mechanism of the drill seeder and is used for collecting seeds; the driving assembly is in transmission connection with a transmission shaft of the drill seeder and is used for driving the drill seeder to rotate. According to the drill seeder seeding quantity variation coefficient test tool provided by the invention, the variation coefficient of the seeding quantity of the drill seeder can be effectively analyzed and tested, the test is efficient, and the test result is accurate; and through the controllable adjustment of the distance between the aggregate bins, the test requirements of the whole series of drill planters can be met, so that the quality of the whole series of drill planters is ensured to meet the requirements.
Owner:LOVOL HEAVY IND CO LTD