Explanation of rice mechanized transplanting technique

1) Fine bed science seedling:

First, we must choose the land for the field. The choice of irrigation and drainage is convenient, the field surface is flat, close to Daejeon, and the convenient rice fields are used for the field, and the ratio of the field is 1:60-70 (area). The seesaw should meet the requirements of level, light and reality. The bed soil requires fine, loose, fat, and astronomical grass. The bed soil is preferably dryland loose soil, rice field topsoil, river mud, and gully mud. It is applied after drying and sifting finely (screening 4-5mm). The bed soil is suitable for the drought and preparation, and 200kg per acre of field. Generally, there is no need to mix fertilizer with fat soil, if the lean soil is to be mixed with fertilizer. For every 50kg of fine mud, add 100g of potassium bicarbonate, 200g of superphosphate, mix evenly, and use it. Before the sowing, the bed soil should be guaranteed, and the identity should be absorbed to make the seedlings emerge. The cover soil is different from the bed soil, and the thickness should be moderate (screen 5-8mm). Dryland loose soil.

The second is to timely sowing, quantitative seeding machine plug-in machine for strict ageing requirements, generally 18-20 days is appropriate, therefore, according to the variety of the mouth, machine insertion schedule and item insertion period, batch sowing, growth period Long varieties, dry sowing and dry planting, short-growing varieties, timely planting timely planting. The amount of sowing should be appropriate, and the valley should be even. The average acre net is 450-500kg, which is 0.7-0.75kg per square meter. Press the 畦 quantitative scale to plant the field. Cover the seed soil immediately after sowing (to prevent the topsoil knot, cover the seed soil can not spray water, should let it naturally smoke), prevent the plant buds from delay, promote rooting, and ensure the seedlings are all. To be uniform, the thickness is preferably 0.05-10 ml. The film and straw are then covered.

The third is to manage the seedbed, Qi Miao, and even seedlings. Covering the film and straw curtains, after the seedlings are promptly exposed; after sowing, generally do not fill the water before the film is uncovered, the bed soil is kept moist in the early stage, and the thin layer of water is poured every time after 2 leaves and 1 heart, and the stems are dried during the term. Before the squatting, look at the sky to see dehydration for 1-2 days, so that the hard film forming of the cymbal is conducive to machine insertion. In the first leaf and one heart, the water is topdressed, generally 75-90kg/hm2 per urea. The machine inserts the seedlings to be vulnerable to the damage. At the tip of the 2 leaves, the application is 1500-2000 times, and the liquid is loose. 2-3 days before planting, "fast killing spirit" emulsifiable oil 450-525m water 600-900kg plus 10% "Iridium mouth" 225g, spray. Do it with transplanting.

2) High standard interpolation:

First, the mud is to be deposited, and the thin water machine is inserted. In order to improve the quality of the machine insertion, avoid planting too deep or floating, and smashing, the field must be solidified after a period of time. The sandy soil is solid for about 1 day, and the clay generally needs to be solidified for 2-3 days to reach the mud water clear, and the sediment is not clear and not turbid. The machine maintains a thin layer of water at the time of machine insertion, at a rate of 20-30%.

Second, the standard should be diced, horizontal and vertical. The cymbal is required to be 280 mm wide and 580 mm long. When cutting, it should be straight, and the two sides of the length and width intersect to form a straight body. When the knife is cut into the mud, it is perpendicular to the ground. When cutting the block, the bottom film is cut together to facilitate the lifting.

Third, we must insert the basic seedlings. According to the investigation, the appropriate time for transplanting in the county is 120mm× 200mm278,000 mu/hm2, and the basic seedlings are 55.6-83.4 million seedlings/hm2, that is, the highest yield per 2-3 seedlings per seed, and the disease is light, and the lodging resistance is low. it is good. Therefore, it is necessary to adjust the height of the separation needle at the position of the cardia, the depth of the planting arm into the cardia and the relative height of the box to the barge to adjust the depth of each seedling transplanting and transplanting. The depth of the transplanting is preferably 20-30mm. The original planting rate of the machine is more than 10%, especially the long broken ridges and the larger "skylight" leaves need to be artificially filled to achieve uniform seedlings. Eli high production.

After the four machines are plugged in, they should do a good job of "flat water shortage." Prevent the water in the field from being hit by water or the heavy rain, causing the water layer in the field to be too deep, so that the seedlings are planted, the seedlings are poured, or the rice shoots are flooded.

3) Strengthen field management:

The first is scientific water and fertilizer management. After the seedlings, shallow water seedlings, chemical weeding machine selection machine seedlings special herbicides such as dichloro-benzyl, isopropyl, benzyl and so on. After the seedlings are put in place, the fertilizers are applied in time, the panicle fertilizer is applied to the re-watering in the sun, the urea is applied 45-60mg/mm2, the potassium chloride is added 75-90kg/hm2, and the late foliar spray fertilizer is applied.

The second is to pay attention to the sun. Adhere to enough seedlings to dry the fields in time, and have to hold the fields to control the seedlings several times to control the effects of the days. In the rainy day, you have to ditch the field.

The third is to control pests and diseases and lodging. Focus on prevention of three generations of three mites, rice genus and stripe leaf blight. Grab the sun-drenched field and apply potassium fertilizer to prevent lodging.

(Snow spirit)