How to raise cucumber seedlings and how to cultivate strong seedlings at cucumber seedling stage

Select varieties: select excellent varieties that are suitable for the local consumer market. Soaking seeds to promote germination: soak in hot water of 52-55 ℃ for 30 minutes and put them in a germination box of 26-30 ℃. Preparation of seedling soil: choose peat, perlite and vermiculite. On-demand seeds: seeds are sown on demand in a burrow plate or on a seedling bed. Reasonable topdressing: 0.2% potassium dihydrogen phosphate solution can be sprayed at seedling stage. Prevention and control of diseases and insect pests: control with chlorothalonil and carbendazim.

I. selection of varieties

In order to grow cucumber, we should first choose excellent varieties suitable for the local consumer market. In general, fine varieties of dense thorns can be selected in northern regions, such as Jinchun thorns, Changchun thorns, Xintai thorns and Shandong thorns, while South China is suitable to choose varieties such as Zaoqing No. 2 and Zhengtang Qiu 206. Specifically, you can consult the local seed dealers or agrotechnical departments.

Second, soaking seeds to accelerate germination

The purchased cucumber seeds can be soaked in hot water of 52-55 ℃ for about 30 minutes, stirred while soaking, washed with clean water, soaked in clean water for about 6-8 hours, wrapped in wet gauze, placed in a germination box of about 26-30 ℃ for accelerating germination, and should pay attention to the moisturizing of the seeds. Wait for about 2-3 days. The seeds can be sown when half of the seeds are exposed.

3. Preparation of seedling soil

Generally, you can use a hole plate to raise seedlings, or you can use a nutrition bowl or a whole bed to raise seedlings on the ground. the seedling soil needs to be prepared with nutritious soil, which can be prepared with peat, perlite and vermiculite with a proportion of 2:1:1, or it can be prepared separately. When using soil as nutritious soil, we need to pay attention to that the soil must be fertile, loose and breathable, the way of pastoral soil plus organic fertilizer can be used, and chemical fertilizer can not be used on the seedling bed to avoid burning the roots of chemical fertilizer.

Fourth, sowing seeds on demand

First of all, after finishing or filling the nutritious soil such as the seedling bed or hole plate, then pour through the water, wait for the water to seep down, and then sow the seeds in the hole tray or on the seedling bed, and then cover with a layer of nutrient soil of 0.5-1.0cm, cover it with a layer of plastic film, or build an arch shed for heat preservation and moisturization. it is appropriate to keep the temperature at 24-30 ℃, and then remove the plastic film when the cucumber seedlings come out. The arch shed can not be removed. However, ventilation management should be strengthened.

5. Reasonable topdressing

After the cucumber seedlings come out, they need to exercise the seedlings, and at the same time, the seedling bed should be kept moist and should not be watered too much, and ventilation management should be strengthened to avoid the formation of tall seedlings and stiff seedlings. 0.2% potassium dihydrogen phosphate solution can be sprayed at the seedling stage. Wait until the cucumber seedlings grow to 3-4 true leaves for colonization.

VI. Prevention and control of diseases and insect pests

It is necessary to pay attention to the prevention and control of diseases and insect pests at the seedling stage, especially at the seedling stage. When diseases and insect pests occur, broad-spectrum fungicides such as chlorothalonil or carbendazim should be used in time.