The mechanical rice throwing is when the seedlings are grown in the planting dish and transplanted properly, the seedlings are pulled out from the planting dish and evenly thrown in the field. The gravity falling in the root soil of the planting seedlings falls into a muddy field. To complete the rice planting process. 1. Technical features (1) High operating efficiency, mechanical throwing operation efficiency of 10-15 mu/hour, comprehensive ergonomics is 4-6 times that of manual throwing and machine transplanting, 10-20 times that of artificial transplanting, greatly improved Labor efficiency has reduced labor intensity, saved work time, and saved labor. (2) The operation quality is good, the mechanical casting operation is even, and the coefficient of variation of throwing uniformity is less than 5%. Due to the good uniformity of seedlings, seedlings can make full use of light energy and wind energy, improve the ventilation and light transmission conditions, and have reasonable population structure. (3) The rate of childbirth is high and the rate of childbirth is high. The mechanically transplanted earthworms are transplanted with soil, which results in less damage and less mechanical damage to the stems and leaves. The ecological system of the seedlings is well protected. This greatly shortens the time of establishment and return to the green, and the condition of soil surface is warm, moisture, ventilation, etc. Good, seedlings grow fast. The effective delivery at the early stage has created more conditions for raising the spike rate per plant at a later stage. Also due to the fast speed of mechanical throwing, the seedlings are short after the seedlings are thrown, and the tillers are early, so the proportion of the advantages is large, the panicles are orderly, the grains are numerous, and the quality of the thousand grains is large. (4) The throwing rice has strong lodging resistance. After the throwing, as the new leaves continue to grow, the number of tillers increases, and the number of stem sections with rooting ability increases rapidly, and the rooting ability of these stem sections gradually increases, and thus the amount of new roots rapidly increases. The growth above and below the ground is closely linked to each other. Due to the well-developed roots, the stems of the above-ground parts grow vigorously, the stems are thick, and the lodging resistance is enhanced. (5) The effect of increasing production is obvious. The greatest advantage of using mechanical casting is not only that the operating efficiency is of high quality and low cost, but also that it is important to have obvious effect of increasing production. General machine throwing rice acres can increase production 50-80 kg. 2. Machine operation and precautions Throwing machine: The currently used casting machine is mainly developed by the China Agricultural University 2ZPY series rice throwing machine, seedlings, plastic seedlings. (1) For plot preparation, under normal circumstances, it is necessary to carry out tillage and leveling and weeds are buried deeply. It is better to make the land surface flat, and the water is not muddy, and the surface soil is muddy. (2) Preparation of seedlings. Choose good varieties, use plastic plugs to raise seedlings, do a good job in seedbed management, control the temperature, humidity, prevent leggy, seedling height can be 80-200 mm range can be. If the seedlings are too wet, the seedlings can be removed from the tray and dried before being thrown. When the seedlings are dry, they can be sprayed with moist water 2 hours before throwing. (3) When walking machine is used for walking, the machine is generally used for shuttle walking. In windy weather, the walking direction is parallel to the wind direction to improve the throwing uniformity. The initial working position of the tractor shall be about 4 meters from the left or right side of the field and about 6 meters from the rear side of the field. When the land turns, it should be about 4 meters from the front of the field, so that the seedlings will not be thrown out. (4) Feeding method: When feeding, the two feeding hands should continuously put the seedlings into the funnel, do not feed two at the same time, and do not feed the longer interval between the two, if the funnel is If the seedlings are plugged, they should be cleaned in time. (5) Other Precautions A. When the wind exceeds level 4 or when heavy rain comes, the operation should be stopped so as not to affect the quality of casting. B. When troubleshooting, the machine shall be shut down and shut down. When crossing the trench or ridge, it is necessary to pay attention to safety. C. To control Good moisture content of soil moisture, such as large water content can cause a low rate of ramming, drifting and other phenomena d, do not touch the rotating parts during operation, do not allow people to stand after throwing trays, and each time the car is stuck in the parking or operation The thrower clutch should be cut off.
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