Grower Zhang said: If this spinach has white spots, don’t use half a bowl of water and sell it with sleeves. No one wants to. Most are handled at low prices. Tell me why spinach has white spots? Can it be prevented? I don’t think I can buy any more spinach this year. Spinach white spot mainly damages spinach leaves. Generally speaking, the lower leaves are affected first, and the mole is nearly round. The middle of the mole is yellow-white with obvious edges. The outer edge is brown or gravel-colored, and then gradually turns into white spots. At this point, if the humidity is too high, gray hairs may appear on the stain. After the humidity got wet into the drying room, the signs cracked from the middle.

Spinach white spot is a fungal disease spread by wind and rain. Generally, spinach is prone to disease under weak growth conditions and warm and humid conditions. The disease is more serious in spinach plots with relatively sunken terrain and improper management. Before planting spinach, choose a flat plot with fertile soil and good ventilation. Reasonable water and fertilizer management during planting. When symptoms of white spot disease appear on spinach, growers must apply medication in time. Generally, it is 1000 times liquid of moisturizing powder for more than 50 fungi or 700 times liquid of humidifying powder for more than 75 bacteria. Generally, it is sprayed once every 10 days, twice in a row.

The temperature in early spring is still low and the lighting time is not good in the later period. Leafy vegetables are prone to bolting. Therefore, when selecting varieties, choose varieties that are not prone to bolting. The planted plots should extend beyond the unplanted cruciferous vegetable plots, and the previous stumps should be dug deeply in time to remove residual weeds after harvesting. In early spring, when the soil spreads after thawing, apply 2000 kg of sugar-free organic fertilizer, 25 kg of urea, and 10 kg of potassium fertilizer, and then use shallow plowing to prepare for sowing. The temperature is relatively low when spinach is sown in spring. If the seeds do not germinate before sowing, it will take at least half a month to germinate after sowing. Adopt the soaking germination method, first soak it in warm water for 5 hours, take it out and dry it, and put it in a greenhouse environment of 25 degrees for germination. It usually takes 2 to 3 days to sow, which greatly shortens the germination time and promotes the seedlings to grow well. There are many ways to sow spinach. Wet seeding is most common in early spring. First pour water into the soles of the feet, sow the seeds after the water has penetrated, and then cover them by 1 cm.

Because the temperature is low in early spring. Therefore, it is best to cover with plastic film after sowing. This can have an excellent warming and moisturizing effect. Please note that the buds should be peeled off or made into small arches as soon as they emerge. The purpose of this is to allow the seedlings to see more light, prune the saplings more, burn the seedlings for high temperatures, and at the same time allow the small arcade to lift the night cover during the day and reveal the clear rain cover. The spinach soil in wet spring has sufficient moisture, so water is usually poured once 2 to 3 true leaves grow up, and watering is carried out according to soil and climate changes. During the second watering, 15 kilograms of elements are emitted per acre of radish per water, especially topdressing with quick-acting nitrogen fertilizer one month before harvest.