When does spring ploughing usually start, and what preparations should farmers make?

1, seed disinfection. After selecting planting varieties, we should pay attention to the disinfection of seeds, because we can't guarantee the safety and health of seeds. Doing a good job of disinfection can strengthen protection and reduce the occurrence of pests and diseases. First of all, seeds should be exposed to the sun for a period of time to improve their vitality. After the seeds are dried in the sun, they are put into prochloraz and other liquid medicines for disinfection. First, soak the seeds in clean water for about 10 hour, then take them out and dry them. Mix prochloraz with water and put them in. After soaking for one day, it can be taken out for germination and sowing.

2. Seeds germinate. Before planting, we should pay attention to accelerating germination according to various factors such as planting varieties and seed germination ability. If it is disinfected, it is not necessary to accelerate germination, but also to put the seeds in an environment with suitable temperature and wait for dew to germinate. When accelerating germination, the seeds should be soaked in warm water. Steps and time are similar to disinfection, and can be carried out together. The temperature of germination should be kept at about 25 degrees. Pay attention to the weather changes after germination and sow in time. If the seeds are coated, we can sow them directly.

3. Paddy field management. Before planting, it is still necessary to do a good job of sorting out rice fields, strengthen soil preparation, and turn over about 30 cm deep. Determine the planting mode according to the planting varieties, control the planting density, and dig planting ditches or holes. After sowing, attention should be paid to covering plastic film for heat preservation to promote seed germination. If the seedlings encounter hot weather after successful seedling raising, it is necessary to uncover the plastic film in time to cool down. Avoid the high temperature in the film, which will cause the seedlings to burn. But when the temperature is low, we should also pay attention to covering the film in time to keep the seedlings warm and prevent freezing injury.

4. Rational fertilization. The fertilizer planted in spring ploughing should be mainly decomposed farmyard manure with proper compound fertilizer. The specific fertilizer application depends on the crops planted, such as rice, soybeans and other food crops. Generally, farmyard manure is used as base fertilizer. Fruits and vegetables should be mixed with farmyard manure as base fertilizer. It should be noted that urea should not be used when applying base fertilizer, because biuret will be produced when urea volatilizes, and too high biuret content will lead to crop seeds and seedlings poisoning and affect their normal growth.