How and when to plant onions.

There are many varieties of it, and the planting time of different varieties will naturally be different, but the approximate time is the same, mostly around early September, which is probably the Millennium solar term. The temperature and climate at this time are more conducive to growth and management.

Second, accelerate germination and sowing.

Its sowing method is very simple, just sow directly. However, it is suggested that the seeds should be germinated before sowing, soaked in clean water for 12 hours, dried and placed in an environment of about 23 degrees, and can be sown when the buds are exposed, which will increase the probability of germination.

Third, set the value in time.

When the seedlings grow four true leaves, they can be fixed. Note that at this time, short seedlings, clustered seedlings and diseased seedlings should be eliminated, and only strong seedlings should be selected, so that they can grow better in the later stage. The setting value is mostly carried out at the end of 10, and the plant spacing is controlled at about 20 times 15 cm.

Fourth, on-site management

After setting the value, pay attention to fertilizer and water management and pest control. Topdressing is mainly urea and NPK compound fertilizer. At the peak of growth and bulb expansion, topdressing can be combined with watering. The main diseases are rust, purple spot and downy mildew, and the main pests are scallion. Usually, it is necessary to ventilate more and drain water in time. It is necessary to prescribe the right medicine to find pests and diseases.