Key points of cultivation in transplanting stage of mechanically implanted rice

First, make a good start and manage the seedling field well.

1. Look at the seedling and get up fat. It is generally carried out 3-4 days before transplanting; the amount of fertilizer and application method should depend on the seedling color; the detached seedlings with faded leaves should be evenly sprayed or poured with urea 4-4.5 kg per mu to water 200 kg in the evening, and should be sprinkled once after application to prevent fertilizer-burning seedlings; the seedlings should be sprayed with urea 1-1.5 kg per mu and 60-70 kg water per mu The leaves are thick green and the leaves are covered with seedlings, do not apply fertilizer, water control measures should be taken to improve the quality of seedlings.

2. Timely control water to refine seedlings. It is usually carried out 3 days before transplanting. Water control method: keep half-ditch water in sunny days, and sprinkle water to moisturize the seedlings when rolling leaves at noon. Drain the stagnant water in the seedling ditch on overcast and rainy days, especially before transplanting, cover with plastic film before rain to prevent the high moisture content of the pan soil from affecting the raising and transplanting of seedlings.

3. Make good use of starting medicine in a comprehensive way. Because the mechanical transplanting seedlings are small and tender, they are vulnerable to pests such as borer, gray planthopper and rice thrips, so it is necessary to make good use of starting medicine in an all-round way. It is required to spray 50 kg of water with 50 ml of 5% fipronil per mu 2-3 days before planting.

Second, do a good job of transplanting meticulously

1. Fine tillage. First, the time is early. The elasticity of seedling age of mechanical transplanting seedlings is small, and field tillage must be carried out early. It is better to wait for rice seedlings than to wait for rice seedlings. Second, land preparation should be leveled. The surface of the field is required to be flat, the difference in the height of the whole field is less than 3 cm, the topsoil is hard and soft, and there are no weeds and debris on the surface. The third is to appropriately reduce the amount of straw returned to the field. Generally, the amount of straw returned to the field does not exceed 200 kg per mu. Fourth, the soil should be properly solid before machine insertion. Generally, it takes about 1 day to settle down. And pour a thin layer of water with a depth of 1-2 cm before transplanting seedlings.

2. Apply sufficient base fertilizer. The application of base fertilizer should be based on soil fertility, stubble and other factors, and adhere to the principle of combining organic fertilizer with inorganic available fertilizer. The application rate is generally 45% 50% of the total amount of fertilizer application, in order to meet the nutrient needs of rice growth in the early and middle stages.

3. The density is reasonable. The density of conventional varieties is higher, the suitable row spacing is 30 cm × 12 cm, the actual density is 17000-17500 holes per mu, and the transplanting density of hybrid japonica rice is about 15000 holes per mu.

III. Pay close attention to field management

1. Scientific water slurry management. Adhere to thin water transplanting, live trees return to green stage requires an inch of water to protect seedlings, encounter fine weather, so that day irrigation night dew, avoid dry avoid flooding. After the plant is alive, it should be properly dehydrated and exposed to the field, and the shelving time should be increased accordingly.

2. Apply tillering fertilizer as early as possible. It is required to apply 5 kg urea per mu as tillering fertilizer combined with chemical weeding.

3. Adhere to the secondary division. Generally, the first chemical removal was carried out with benzidine compound 5-7 days after planting, and then the second chemical removal was carried out with benzyl ethyl compound 1 week after planting. After using the drug, the water layer should be maintained in the field to improve the chemical removal effect.

4. Prevention and control of early diseases and insect pests. When transplanting small seedlings into the field, we should pay close attention to the harm of rice thrips and rice beetles, and organize the control in time.