After planting vegetables, farmers often report uneven emergence, withering and dead trees. This is probably due to poor planting. Therefore, farmers need to do every link in the planting process and try to reduce the problems in the later stage. Remember these points when growing vegetables in greenhouses!

First, the preparation before planting

1. Shed and soil disinfection

Before planting vegetables, the greenhouse needs disinfection. You can use fumigation. About 3 cm of sulfur is used per mu of land. Close the shed after ignition, and exhaust smoke after 24 hours; You can also use 200 ~ 250g/mu of 45% chlorothalonil, seal the shed for 3~4 hours and then ventilate.

2. Apply organic fertilizer and biological bacterial fertilizer on the base fertilizer.

People are always used to relying on chemical fertilizers, while ignoring the role of organic fertilizers and bacterial fertilizers. In fact, both are indispensable. Biological bacterial fertilizer can reduce the occurrence of soil-borne diseases. Mature organic fertilizer can provide more nutrition for crops, but attention should be paid to it.

3. Soil preparation and ridging

Ridge cultivation can provide a better growth environment for crops and coordinate the balance of water, nutrients, air and heat. Improve soil fertility and provide good conditions for sowing, crop growth and field management.

4. Choose good seedlings when planting.

Choosing healthy seedlings is the biggest prerequisite for planting. Strong seedlings, aseptic seedlings with developed white roots and good growth are the first choice, and seedlings with few root hairs and yellow-brown seedlings are best not to be used.

5. Planting time

Planting time is generally chosen in sunny morning or afternoon when the temperature is not very high, so as to avoid seedling wilting caused by high temperature at noon. Dipping roots with rooting fertilizer before planting can improve the survival rate.

Second, post-planting management.

1. Suitable for watering

Generally speaking, it is very important to water vegetables three times a month after planting.

(1) Planting water: it needs to be watered thoroughly. Before planting vegetables, the soil in the shed has been deepened and the air permeability has improved. In addition, the roots of seedlings are few, mostly distributed in the 5 cm plough layer, so watering with a lot of water will generally not cause root retting due to lack of oxygen.

(2) Slow seedling water: Generally, it should be watered about 6-7 days after planting vegetables. Otherwise, it is easy to accumulate water in the field, resulting in retting. Water it at five or six in the morning.

(3) Tree-promoting water: It is appropriate to water the seedlings after 15 days. The purpose of this watering is to promote the fruit-setting ability of vegetables.

2. Proper ventilation

The temperature and humidity of the seedbed are very high, and the seedlings grow very tender. If the seedlings are not ventilated for a long time and then suddenly ventilated, the outside temperature is low and the air is dry, the seedlings will wither due to sudden water loss, and then the leaf cells will be difficult to recover due to sudden water loss. In severe cases, the whole leaves are dry, while in light cases, mesophyll tissue at the leaf margin or between veins is dry and yellow, and the leaves are like fire.

3. Disease control

Because some diseases are caused by soil-borne factors, some management measures can be taken to reduce the incidence before planting. For example, measures such as increasing the application amount of bacterial fertilizer, deep ploughing the land and high temperature disinfection. Prevention and control measures should be taken in time.