The latest course of cucumber management technology in greenhouse

The most important and long-term work after cucumber planting is cucumber field nitrogen fertilizer planting management, open field planting has the key points and methods of open field management, as well as some matters needing attention. And the management technology of greenhouse planting is different, in view of the warm microclimate conditions, growth management methods should also make certain adjustments, pay attention to the management focus. You can take a look at some of my views on cucumber greenhouse management.

First, control water and fertilizer

Plastic film mulching planting cucumbers in the greenhouse, due to plastic film mulching, water evaporation is not easy to get out of the greenhouse, need to open the door, or open windows to evaporate out. Therefore, irrigation had better be set up drip irrigation facilities, let the water slow drip irrigation into the soil, do not flood, flood irrigation, easy to breed diseases. Or irrigation in a small amount and many times. Use about 30 jin of nitrogen fertilizer per mu in Miaoding, such as urea. During the flowering and fruiting period, topdressing should be applied once, and about 45 jin of phosphorus and potassium fertilizer should be applied per mu and 0.2% potassium dihydrogen phosphate solution should be sprayed. Fertilization combined with watering, in the melon period requires a lot of water, can be irrigated every five days or so, but not excessive, easy to light taste.

Second, control temperature

After planting to slow down the seedlings, the need for heat preservation, the need to close the greenhouse, a small increase in temperature, there is no need for ventilation. Until after the slow seedling stage, it can be ventilated gradually during normal growth, maintaining a temperature of 20 to 28 degrees during the day and more than 12 degrees at night. It can be ventilated all night when the external temperature is stable above 12 degrees at night.

III. Plant adjustment

It is necessary to set up the frame in time when the cucumber starts to draw the vine, so that the melon vine can climb smoothly. When the branch vine grows into reproductive growth, and the branch vine hardly grows, it is necessary to tie up the vine and tie it up with a rope about 20 centimeters apart. In the prosperous period, the old leaves at the bottom should be thinned in time, ventilated and dampened, and the excess branches should be removed in time to leave the strong main branches. Remove the top of all reserved branches and concentrate nutrients on the fruit.

IV. Disease and pest control

It is mainly used to control downy mildew and blight and to prevent the occurrence of diseases. broad-spectrum fungicides are mainly used to spray twice every other week or more than one week. After the onset of the disease, 58% metalaxyl and other medicament spray is used at the initial stage of the disease, which can be sprayed continuously, usually once every three days, three or four times in a row. The main pest control are aphids and red spiders, both of which are harmful pests. 3% acetamiprid EC 2000-2500 times or 10% imidacloprid wettable powder 2000 times can be used.

The management of planting cucumber in greenhouse is the above aspects, but in the actual production management, we should pay attention to the detailed management of these points. It is also necessary to note that the actual environmental conditions, climate and other practical factors can be flexibly adapted in practice.