Happy with warmth and strong light, heat-resistant, intolerant of frost, growing temperature 25-30 ℃. Drought-resistant, also moisture-resistant, but not flood-resistant, broader adaptability to the soil, but with thick, fertile, well-drained loam soil is the best, the requirement of pH 6-8.
Red okra planting techniques
1, cultivate strong seedlings, transplanting at the right time
Generally in March, mid-winter warming greenhouse sowing seedling, seed treatment is required before sowing, with 30 ~ 35 ℃ warm water Soak the seeds 20 ~ 24h, in 28 ~ 30 ℃ under the condition of germination 48h just white, sown in 8cm × 8cm nutrient block, the seedbed to maintain 25 ℃ or so, 4 ~ 5 days can come out of the seedling, when the seedlings to grow to 3 ~ 4 true leaves when planting, row spacing 45 ~ 50cm, plant spacing of 40cm.
2, strengthen the field management
(1) weeding and cultivation of the soil
Seedlings planted in a timely manner after 2 times of mid-plowing, in order to promote slow seedling and seedling growth. Before the first flower bloom, plowing and appropriate squatting. At the beginning of flowering and fruiting, every time after fertilizer and watering should be timely plowing to prevent soil condensation and weed growth. Before the plant closes the line, combined with fertilizer and watering, appropriate mid-tillage soil cultivation, in order to prevent plant collapse.
(2) Fertilizer management
Red okra fruiting period is longer, more fertilizer, in the application of adequate fertilizer on the basis of a number of times. Slow seedling after the first fertilizer, should be timely watering after application; mid-June to the results of the full season of the implementation of the second fertilizer, to promote robust plant growth, with the application of phosphate and potash fertilizer, to promote early ripening of the fruit.
Red okra is relatively drought-resistant, water management should be appropriate watering according to soil moisture.
(3) Trimming and leaf removal When cultivation density is large, the base lateral branches and old yellow leaves should be cut off appropriately in the middle and late stages of growth.
(4) pest control Red okra is very resistant to disease, susceptible mainly to root-knot nematode disease. Before planting, pay attention to soil sterilization with phoxim.
3, timely harvest
Red okra plants with 7 ~ 9 leaves began to bloom, 7 ~ 8 days after the flower shedding of young fruits grow to 8 ~ 10cm, must be harvested in time. If the harvest is too late, the young fruit aging, fiber increase, quality deterioration. Harvesting time in the morning is preferable to facilitate direct sales, harvesting should be cut with scissors stalk, can not be pulled by hand to prevent injury to the branch.
Red okra from sowing to the first harvest takes about 50 days, usually in early June to start harvesting, can continue to harvest to the first frost, harvest supply period of about 4 months, per 667m2 yield of about 1500 ~ 2000kg.