Detailed Explanation of Key Techniques for Growing Spinach in Greenhouses
First choose the seeds to be sown well, then germinate the seeds. Then sow on land that has been prepared and fertilized, and after sowing cover with a layer of plant ash. Then apply topdressing according to the growth of the spinach, and topdressing can be carried out together with watering. Finally, just do the field management work well.
Precautions for growing spinach in greenhouses:
1. Planting time
In spring, choose to sow in mid-March. Temperature changes in summer are relatively obvious, so it is best to plant in batches, which will give a slightly higher yield. The first batch can be planted in early May, the second batch at the end of June, and the third batch in early July; this timing will make them grow more vigorously. The temperature in autumn is very good, so sowing can be done throughout the whole season. In winter, planting can only be done in November, otherwise the spinach seedlings are likely to freeze to death. So each season has a different planting time, and everyone must grasp it well.
2. Planting varieties
The choice of planting varieties is different for each season. Summer is hot, so varieties that can resist high temperatures and drought need to be chosen; in winter, choose ones with relatively strong cold resistance; autumn is generally a period of high incidence of some diseases, so the seeds we sow at this time should be chosen for relatively strong disease resistance; spring has relatively abundant rain, so choose some spinach varieties with strong resistance to water and strong resistance to aging.
3. Timely harvest
Once the spinach has grown, it should be harvested in time, otherwise it will affect the production of the next crop. One or two days before harvesting, water it a little, and harvest them in the morning while there is more dew on the leaves. You can use a knife to cut at the root position, then remove the old leaves and yellow leaves on top, and use some string to tie them into small bundles one by one.
In addition, during the planting period, attention should also be paid to preventing and controlling the occurrence of aphids, leaf miners, anthracnose and downy mildew, etc. Do preventive work in advance to avoid the occurrence of pests and diseases as much as possible.