The root crop smashing and returning technology is mainly applied to corn crops. It is a plot with a deep ploughing base that makes full use of deep ploughing and aftereffects. In the year when it is not plowing, it will use the root smashing and returning machine to stand on the roots of ridges. 10 cm above ground and underground) directly crushed, and evenly mixed in the plough layer, one-off smashing and smashing operations were completed. Instead of manual ploughing and cultivating the ridge, the traditional farming method was used to support ploughing. technology. 1. The extermination machine is a power driven ridge on the ridge. When the cutting machine is working, the rotating blade cuts the root and the soil, and throws the roots of the cutting and the soil to throw back and collide with the mud shield, so that the root pot and the soil block are further broken and then fall to the ground, once the planing and cutting are completed. Crushing and cultivating on the ridge. (1) Stubble machine construction. The rake machine used with the small four-wheel tractor is divided into two types: hydraulic suspension and rope lock. The former is fixed behind the rear axle of a small four-wheel tractor and has poor reliability. The latter has good reliability. The former is fixed behind the tractor by the hydraulic system of the small four-wheel tractor; the latter is fastened by the rope lock and the fixing bracket and the six screws of the rear axle of the small four-wheel tractor. On the ridge, the depth of the ridge is reduced. The former is adjusted by hydraulic lifting and the latter is regulated by the elongation or shortening of the wire rope. Their transmission and operating machinery are the same. The rake machine is composed of a frame, a clutch assembly, a gearbox assembly, a blade fixed disk assembly, a blade fender assembly, and the like. (2) Precautions for Use of Stubble Cutters 1 It is necessary to pay attention to observing whether there are noises and metal knocking noises during the operation of the working components of the stubble machine. If abnormal noises are found, it is necessary to immediately stop the inspection to find the cause and remove the fault. operation. 2 When cornering and reversing the terrain, it is forbidden to work, otherwise it will cause blade deformation, fracture, and even damage the rake. When the unit starts, it is necessary to first engage the shredding machine clutch and work after the gear. At the same time, the hydraulic lifting handle (or the winding of the rope locking mechanism) is operated so that the cutting blade of the cutting machine gradually gets into the earth, and then the fuel is added to the door until the depth of normal extermination. It is forbidden to put the stubble machine into soil or put it into soil before starting. This will cause the blade to be impacted, resulting in damage to the transmission components. 4 Every 3-4 hours of work, check whether the blade is loose or deformed, and whether other fasteners are loose. 5 During the inspection, you must stop and turn off the engine to ensure personal safety. 6 When the vehicle is parked, it should be put on the ground and must not be parked. 7 When the field shifts or passes through the ditch, it is necessary to raise the stubble to the highest position and, at the same time, cut off the rotational power. If the transfer distance is large, it must be locked. 8 When transporting or transferring from a distance, it is not allowed to place heavy objects or people on the stubble machine to avoid danger. 2. Technical Requirements (1) Working hours. Homework can be selected after harvesting in autumn and before sowing in spring. Spring work is better than autumn work. Because, the technology of root smashing and returning to the field is characterized by using non-decomposing organic matter to fertilize the soil. If early autumn operations are selected in areas with warmer temperatures, the roots will decompose and decompose and destroy nitrogen in the soil. The spring work is relatively better, and after the winter sun is blowing, the water is almost evaporated, and the crotch is crisp and easy to bury in the soil and it is not easy to decompose. In addition, all the root systems in spring have lost their vitality. Just after thawing (northern), the soil is looser than autumn, which can reduce the working resistance of the rake. (2) Preparation. Before the extermination operation, plan to select the plot. The land is required to be flat and the moisture content in the soil should be suitable for work machinery. Clear the obstacles in the field and fill in the trenches. If there are too many and too high weeds in the field, they must be cut to ensure the quality of the machinery. (3) The stubble height of the crop. The crops to be returned to the field should be harvested at the time of harvesting. If the stay is too low, it will reduce the ability to cultivate the soil. If the stay is too high, it will affect the quality of the smasher. For corn and sorghum and other thicker crops with straw, the remaining height should be about 10 cm. For crops with relatively small straw such as wheat, soybeans, and cotton, the height of stubble should be about 5 cm. (4) Debris depth. The depth of extermination depends on the degree of development of different crops and their root systems. The corn, sorghum, cotton and other crops have developed roots, the recommended depth of the crop is 10-20 cm, and the stubble depth of crops such as wheat and soybeans should be 8-10 cm. (5) Monomer operation width. The width of single-unit operation shall be based on the criteria of no leakage, no damage to the ridge boundary, and the ability to replace the conditions for a better ploughing operation. According to the different ridge spacing in each area, the width of the single operation is preferably 25-30 cm. (6) The degree of crushing. After smashing, the cut length is less than 5 centimeters to account for about 80%, 5 to 10 centimeters can only account for about 20%, and standing and cutting does not exceed 0.5%. (7) Shredder root coverage. After being crushed, the surface coverage cannot exceed 40%, and the underground coverage cannot be lower than 60%. If it is a skimming unit equipped with a ridger device at the same time, the total smashing and mulching will reach 98% or more. (8) Sludge rate. In terms of increasing soil pores and ventilation and light transmission, it is better to crush the soil processing at the same time. Generally should be 90% to 95%. (9) Repression security. In the fall, the plots for extermination operations can wait until the spring of next year to suppress the top Ling. In the spring, the plots for extermination can begin to repress after one day of extermination. Repression can be done by a mechanically induced V-type ballast or by a livestock puller.
Bulk of Rabies Vaccine For Human Use(semi-Finished Products)
1. The standard for internal control is higher than national standard. The Rabies Vaccine has high potency and has good immunogenicity.
2. The vaccine shows good safety with low ratio in adverse reaction. The product is suitable for large scope vaccination in exposure area.
Bulk Of Rabies Vaccine,Mild Bulk Of Rabies Vaccine,Stable Rabies Vaccine
Changchun BCHT Biotechnology Co. , http://www.ccbcht.com