What does a jackfruit tree look like?

Jackfruit tree is a tall evergreen tree with straight trunk and large leaf area. The specific appearance description and pictures are as follows:

Evergreen trees with height 10-20m and DBH 30-50cm; Old trees often have slab roots; The bark is thick and dark brown; Branchlets 2-6 mm thick, longitudinally creped to smooth, glabrous; Stipules hold stems in a ring shape with obvious scars. Leaves are leathery, spirally arranged, ovoid or obovate, 7- 15 cm long or longer, 3-7 cm wide, blunt or tapering at the top, wedge-shaped at the base, all mature leaves, or leaves on young trees and sprouting branches are often divided, with dark green surface, light green or light brown after drying, hairless, shiny, light green and slightly rough back.

Mesophyll cells have long arms, and there are spherical or oval resin cells in the tissue. The lateral veins are pinnate, 6-8 on each side, and the midvein on the back is prominent. Petiole length 1-3 cm; Stipules clasping stems, ovoid, long 1.5-8 cm, externally appressed or glabrous, falling off.

Flowers are monoecious, and inflorescences are born on old stems or short branches. Male inflorescences are sometimes born in axillary branches or axillary branches. Cylindrical or rod-shaped oval, 2-7 cm long, with many flowers and underdeveloped parts, with a total pedicel length of 10-50 mm; The perianth of the male flower is tubular, long 1- 1.5 mm, 2-lobed at the upper part, puberulent, stamens 1, filaments standing upright in the bud, anthers oval, without degenerated pistil; The perianth of female flower is tubular, with teeth at the top, and the base is trapped in the axis of fleshy spherical inflorescence. Ovary 1.

The growing environment of paramita

The vertical distribution of jackfruit is generally below 300 meters above sea level. It needs a high-temperature, humid and frost-free climate, and is suitable for areas where the annual average temperature is above 22-24℃, the average temperature in Leng Yue is not lower than 12℃, the absolute low temperature is not lower than 0℃, the accumulated temperature is above 7500℃, and the annual rainfall is1200-1800 mm. When the radiation low temperature appears at 0℃, the terminal buds and leaves will suffer from cold damage, and when it drops to -2℃, dead branches will appear.

When the average daily temperature of advection type low temperature is 9℃, the adult trees are seriously damaged by freezing. For example, in the winter solstice of 1976 and the spring of 1977, there were rainy and low temperature (8.9℃) weather for more than 50 days, and many plants were frozen to death.

The drought resistance is moderate, the fruit often falls after a long drought, and there is too much rain during flowering, which also affects pollination. The requirements for soil are not harsh. It can grow and develop normally in acidic to slightly acidic clay loam, sandy loam or gravel soil, but the deep, fertile and moist sandy loam is the best. Strong positive tree species like light best, but seedlings and young trees are slightly shade-tolerant, and big trees need sufficient sunshine to bear fruit normally. Avoid low-lying water.