Huang Jingmi cempedak is an excellent variety selected from Mong Tsim durian honey introduced from Malaysia as a hybrid offspring with Jackfruit native to Hainan, China. Due to its high yield, good quality and double-season fruit, in 2007, one of the Pinnacula fruits was purchased from Malaysia and introduced to Hainan, and a total of 47 seeds were obtained and planted in the Pinnacula base in Longhu Town, Ding 'an County, Hainan Province. The durian honey base in Longhu Town, Ding 'an County, Hainan Province was planted in the spring of 2008. After 5 years of observation, a high-quality bearing mother strain LH-1 was selected, which was characterized by stable character, high yield, uniform fruit shape, thick and sweet fruit bud, and its bud strips are grafted and propagated. From 2017 to 2021, its main economic traits, biological characteristics, fruit quality and yield were observed for 5 consecutive years to identify its stability, and it obtained the certificate of non-major crop varieties of Hainan Province on October 2, 2023.The tree shape is mainly dry and sparse layer type or conical, the tree body is semi-open, the growth is medium to upper, the density of branches is medium, the trunk is grayish-brown and grayish-white, and the skin is smooth. The new branches are light green to green, without fuzz, and the old branches are yellow brown to gray brown, without fuzz; Leaves are leathery, alternate, old leaves dark green and shiny, mostly obovate to oval, tip shape is acuminate, base cuneate, whole margin, edge neat without serrate, leaf surface smooth, glabrous, the reverse is rough. Unisecious flowers, male inflorescence terminal or axillary, clav-shaped, female inflorescence yellow-green, initially clav-shaped or oblong, on branches or fruiting branches, developed into fruit after pollinationThe mature fruit is oblong, yellow-green, with an average longitudinal diameter of 31.30cm × 15.55cm across. The fruit bracts are mostly spherical or ellipsoid, kidney or irregular, bright yellow in color. The average number of single fruit bracts is 88.5, the flesh weight of single fruit bracts is 35.03g, and the seeds are white to light brown, mostly oblong and kidney shaped.Soluble solid 28.30%~31.70%, average 30.03%, quality of medium and superior.This variety has two concentrated flowering and fruit maturity periods in Hainan (longitude 108.37°~111.05°, latitude 18.10°~20.18°) a year, with summer fruit and winter fruit. The two flowering periods were from mid-late January to late February and from late August to early October, the two fruit ripening periods were concentrated in mid-May to late June and mid-January to mid-late February, respectively, and the two fruit growth periods were 115-125 days and 140-150 days, respectively. Summer batch of 30~42 fruits, plant yield 143~163 kg, winter batch of 10~15 fruits, plant yield 26~30 kg, 666.7 m2 yield total 3211~3667 kg, the maximum yield per plant can reach 190 kg.It has strong cold resistance, drought resistance and heat resistance, but it is not resistant to waterlogging, can better resist adverse environmental factors, and adapt to the climate, soil, vegetation, topography, hydrology and other environmental conditions in most areas of Hainan Province.It is suitable for planting in Ding 'an County, Chengmai County and Changjiang County of Hainan Province and other water source areas, and it can flower and bear fruit in the third year with good yield.Plant row spacing is 6~8 m×5~6 m, and 14~19 plants should be planted every 666.7 m2. The young durian honey garden is interplanted with short-term crops such as vegetables, melons, hard beans and peanuts. Adult bearing trees are fertilized more than 3 times a year. When seedlings and fruits are dry, water should be injected in time. The young trees are cultivated in the form of sparse layer trees, and the adult bearing trees are pruned twice a year. The adult trees entering the full period of birth have 40 to 60 fruits in two seasons. During the whole growth period of durian honey, diseases, insects and rats were controlled.
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