Okra is not a plant that can be planted all year round. No pods at low temperature, usually sowing in April-June.
Okra likes warmth, is afraid of cold and has strong heat resistance. Stop growing below 8℃. When the air temperature is 65438 03℃ and the ground temperature is about 65438 05℃, the seeds can germinate. But the optimum temperature for seed germination and growth period is 25~30℃. The monthly average temperature is lower than 17℃, which affects flowering and fruiting; When the night temperature is lower than 14℃, the growth is slow, the plants are short, the leaves are narrow, the flowers are few and the flowers are many. At 26~28℃, there are many flowers, high fruit setting rate, rapid fruit development, high yield and good quality. That is to say, generally speaking, Tomb-Sweeping Day can sow in the open field before and after, that is, it can start sowing in April, and the north can sow later. Young pods can be harvested about 2-3 months after sowing, and most of them can be harvested in mid-June at 65438+ 10.
Okra likes warmth and is afraid of frost. The whole growth period should be arranged in frost-free period, and the flowering and fruiting period should be in warm and humid seasons everywhere. Open field cultivation, sowing in April-June, and harvesting in July-65438+10. Sowing in North China is usually in the middle and late April to May. In northern cold areas, sunlight greenhouses and plastic greenhouses are often used to raise seedlings, and then they are planted in the fields after early spring and late frost.
Okra is suitable for planting on the land with deep soil layer and loose and fertile soil layer. At the same time, apply sufficient base fertilizer. Generally, 2000 kg of soil manure and cake fertilizer 100 kg are applied per mu. Nursery seedlings are usually planted in sunny seedbeds or solar greenhouses from the end of March to mid-April. Seedbed soil is prepared according to the ratio of vegetable garden soil, decomposed organic fertilizer and fine sand of 6: 3: 1, and the density is 10 cm. Because the shell of okra seed is hard, it should be soaked for 24 hours before sowing, and then germinated at 25-30℃ for 4-5 days, and the seedling age is 30-40 days, that is, sowing when the seedling grows to 3-4 leaves. The live broadcast is usually carried out from early April to mid-May, with row spacing of 15 * 40cm and 2-3 capsules per hole. Plastic film mulching cultivation can be sown 4-6 days earlier. When the seedlings grow to two leaves, they should be thinned, leaving only one strong seedling in each hole, and the seedlings should be fixed when there are 4-5 leaves.