Okra is millet. The root system is developed, the absorption is strong, the stems are upright and branched, and the root depth is more than1m.
Stem: the main stem is erect, with a height of 1-2.5m, a diameter of 5cm, red and green, cylindrical, short basal internodes, woody stems, several lateral branches at the basal internodes, and no lateral branches at the flowering nodes; Leaves palmately 5-lobed, alternate, with hairs or bristles on the leaves and slender and hollow petioles; The flowers are big and yellow and inserted in the axils of leaves.
Leaves: Leaves alternate, with coarse hairs on the upper and lower surfaces, palmately 3-5-lobed or shallowly lobed. The leaves in the lower part of the plant are round and wide, and gradually narrow from the upper part. There are also kinds of round leaves, such as castor leaves. The petiole is long and hollow, and there are white transparent particles on the back of the leaves.
Flowers: Flowers are axillary and begin to grow in the 4th 4- 10/0 section of the main plant. After that, each node usually grows a flower. Flowers are perfect, with yellow petals, usually five pieces, and deep red at the base. The flowering period is only a few hours, and it will wither in the afternoon. After the flowers wither, the tender fruits can be harvested in about 3-4 days. ?
Palmately divided, with 5-7 lobes, the lobes lanceolate and the apex acuminate; The edge is obtuse and serrated, and the petiole is slender and hollow. The flower is 4-8 cm in diameter, the petals are white to yellow, and the petals have red or purple spots at their roots, which are gorgeous in color and have ornamental value.
Fruit: The fruit is a capsule, which is more than 10 cm long, with a sharp apex, slightly curved, slender like a horn or pepper, with thin leathery skin and a sharp apex. The color of the fruit varies from light green to dark green, but also purple. Fruit shapes can be divided into long fruit shapes or short fruit shapes, ranging from 5 angles to many angles, and also round. Fruits contain special sticky substances and have special fragrance or flavor.
When the fruit is ripe, it turns black, lignified, longitudinally cracked, and there is a membrane separation between ventricles. There are more than 10 seeds in each ventricle (sub-chamber), which are spherical, slightly smaller than peas and grayish brown. Fruit length 10-25 cm, transverse diameter 1.9-3.6 cm.
The surface of the fruit is covered with fine white fluff, and the fruit is lignified and inedible when it is ripe; The seeds are spherical, the size of mung beans, and the skin is thick and capillary. It contains many seeds. The seeds are spherical, gray-black, and the 1000-grain weight is about 55g.
The root system of okra plants is developed and grows vigorously, and the demand for fertilizer and water is large, especially in flowering period, which will lead to poor fruit and reduced yield. Topdressing 1 time after seedling formation, and applying 2g NPK compound fertilizer per panicle. If the lack of fertilizer is obvious,
After that, topdressing 1 time every 10 ~ 15 days, and the amount of fertilization depends on the plant size, with 5 ~ 10g per hole. Irrigation should be increased in dry season to keep the soil moist.