Greenhouse planting technology of snow peas

Snow peas are a vegetable that is in great demand. Greenhouse snow peas are developing in an all-round way. Using greenhouses to grow snow peas can not only increase income, but also allow for off-season sales. Here is an introduction to the greenhouse cultivation technology of snow peas.

1. Land preparation and fertilization

Snow peas are more sensitive to continuous cropping and must be rotated every 4 to 5 years. The previous crop should preferably be a rice field with loose, fertile soil and less acidity, and the vegetable field should preferably be fallow land in winter. Before sowing, deep plowing and fine harrowing should be used to loosen the soil. When preparing the land, deep plowing and fine harrowing should be used, and compound fertilizers such as 50 kg of superphosphate, 50 kg of wood ash, and 55 kg of potassium dihydrogen phosphate should be applied. The soil should be deep plowed and fine harrowed to make it level.

2. Seed treatment

Before sowing, you should select seeds that are large, plump, neat, strong and free of diseases and insects to ensure that all the seedlings are strong. Before sowing, you can fumigate the seeds with sulfur dioxide for 10 minutes, or soak the seeds in 50°C warm water for 10 minutes to prevent diseases and pests. Soak the seeds in 15°C warm water before sowing, turn them upside down after soaking for 2 hours, take them out for germination after the seed skin swells, and when the seeds germinate and the embryo is exposed, treat them at a low temperature of 0°C~2°C for 5~10 days before taking them out for sowing.

3. Seedling raising and sowing

It is best to put the nutrient soil into nutrient pots, seedling trays or nutrient paper pots, which is beneficial to protect the root system and promote survival. You can also add nutrient soil directly on the seedbed, water it sufficiently, and then divide it into 10 cm x 10 cm squares to make nutrient soil blocks. When sowing, sow 2 to 3 seeds in each nutrient pot or nutrient soil block. Pay attention to the spacing between the seeds. The sowing depth is 2 to 3 cm. After sowing, cover with nutrient soil with a thickness of 4 to 5 cm.

4. Seedling management

After sowing, the temperature should be controlled at 10℃~18℃. After the seedlings emerge, remove the film on the seedbed in time to cool down. After germination, the temperature drops to 8°C~10°C. If the temperature is too high during the seedling stage, ventilation and cooling should be carried out in time. After the true leaves appear, the temperature can be appropriately increased. Harden the seedlings at low temperature before transplanting to increase their cold resistance. Snow peas are generally not watered during the seedling period. If the soil is too dry, only a small amount of water or spray water should be used to prevent excessive watering from causing the seedlings to grow too tall.

5. Planting management

Before planting, holes should be drilled according to the hole spacing, which depends on the different seasons and varieties. For pod beans, climbing varieties are generally planted in large and small rows, with large row spacing of 50 cm, small row spacing of 40 cm, and hole spacing of 25 cm. Dwarf varieties such as Zhongwan No. 4 should be planted densely. When transplanting, drill holes on the bed surface, plant in time, and water to promote survival.

6. Water and fertilizer management

After planting, water the soil sufficiently, and carry out inter-cultivation and weeding, and soil cultivation and moisture conservation in time. Generally, no watering is required. It is not advisable to water in the early stage of flowering to prevent flowers from falling. If the soil is dry, water in small amounts. The amount of water required during the flowering and podding period is relatively high. It is necessary to strengthen fertilizer and water management, keep the soil moist, and apply fertilizer and water 2 to 3 times in time. You can use decomposed human feces and urine with a small amount of superphosphate, dilute it and apply it to promote podding and strong grains.

7. Pruning and pruning

When the seedlings are 30 cm tall, a trellis should be erected in time, about 1.5 meters high. For semi-climbing varieties, if conditions permit, it is best to build a simple support during the initial flowering period to prevent it from falling over after wind and rain. When the stems and vines fill the trellis, you should pinch the tops to promote side branches according to the growth of the plants, remove excess branches and flowers appropriately, and remove yellow and old leaves at the base in time to facilitate ventilation and light transmission.

That’s it