Red beans, also known as malachite, red beans, acacia beans and so on. It is a deciduous tree of malachite in Leguminosae. Red bean trees are tall and straight, the plant height can reach 8~ 15 meters, the branches grow obliquely upward, the tender branches are cylindrical, and there are filiform hairs when they are young. The bark is grayish brown, and the fine scales gradually become smooth after peeling.

Cultivation management

Seaweed is a good landscaping tree species, which can be cultivated in the open field in the vast south subtropical zone and its south area. The cultivation site should be in sunny highland, with thick soil layer, loose air permeability and good water permeability. During cultivation, the pit should be large, generally with a diameter of 100N 120cm and a depth of 80-90cm. The pit should be filled with decomposed dry miscellaneous fertilizer, then returned to the soil, and seedlings should be dug with soil balls, planted in the center of the pit, filled with fertile sandy vegetable garden soil, drained and covered with a layer of soil, and then irrigated.

1. Water and fertilizer management

Seaweed likes a warm and humid climate, and the soil must be kept absolutely moist during the vegetative and reproductive growth periods. But jellyfish are also afraid of waterlogging, so irrigation should not be too much, especially in midsummer and rainy season. If water accumulates around plants for a long time, it will cause root rot, early defoliation and even death. Irrigation should be done in time in dry season, usually twice a month. Plants will thrive if they are watered thoroughly every time.

Sea red beans like fat but don't like fat. At the end of autumn every year, an annular soil ditch can be dug at a distance of 80~ 100 cm from the plant, and decomposed human excrement or dry manure accumulated by farmers can be applied in the ditch. After absorbing soil, the soil in Yuebawo can be backfilled and watered 1 time, so that plants can absorb nutrients throughout the long winter. The next spring, when the temperature rises, plants can thrive. After flowering in spring, the vegetative growth and reproductive growth of plants are synchronized, and the required nutrients are increased. According to soil fertility and fertilization methods in late autumn, cultivators can dig ditches and apply 1 times high-quality pruning fertilizer, and then irrigate it after returning it to the field. After that, plants can flourish only through irrigation without fertilization.

2. Temperature and light

Sea beans are native to tropical and subtropical regions. Sex likes warm, humid and sunny environment, and is not tolerant of shade and cold. The optimum growth temperature is 20℃. At C.35℃, it can grow in tropics or south subtropics, and can grow in spring, summer and autumn. If the temperature changes obviously in the four seasons, the winter temperature drops to 15cc- 10. At and below 30 degrees Celsius, the leaves of plants begin to age and turn yellow. When the temperature drops below lOcC, the leaves fall off and enter the winter dormancy period until the temperature rises in the next year. After defoliation, adzuki bean has enhanced cold resistance and can overwinter in the south subtropical open field.